{"id":1314,"date":"2026-09-04T06:25:03","date_gmt":"2026-09-04T06:25:03","guid":{"rendered":"https:\/\/superiortransmissioninc.com\/?post_type=product&#038;p=1314"},"modified":"2026-09-04T06:34:03","modified_gmt":"2026-09-04T06:34:03","slug":"ep-s45c-straight-gear-rack-4-to-8-hole-quenching-tempering-hb20-25","status":"publish","type":"product","link":"https:\/\/superiortransmissioninc.com\/es\/producto\/ep-s45c-straight-gear-rack-4-to-8-hole-quenching-tempering-hb20-25\/","title":{"rendered":"Cremallera recta EP-S45C \u2014 De 4 a 8 orificios, temple y revenido HB20-25\u00b0"},"content":{"rendered":"<div style=\"width: 100%; max-width: 100%; min-width: 100%; background: linear-gradient(135deg,#f5f7ff 0%,#eaf0fb 100%); border-left: 5px solid #1d4ed8; padding: 28px 24px; box-sizing: border-box; margin-bottom: 32px;\">\n<h2 style=\"margin: 0 0 10px 0; color: #1e3a5f; letter-spacing: 0.4px;\">EP-S45C Straight Gear Rack \u2014 4 to 8 Hole, Quenching &amp; Tempering HB20-25\u00b0<\/h2>\n<\/div>\n<p><!-- CTA Button --><\/p>\n<div style=\"width: 100%; max-width: 100%; min-width: 100%; text-align: center; margin-bottom: 36px;\"><a style=\"display: inline-block; background: linear-gradient(90deg,#1d4ed8,#2563eb); color: #fff; padding: 14px 40px; border-radius: 6px; text-decoration: none; font-weight: bold; letter-spacing: 0.5px; box-shadow: 0 4px 14px rgba(29,78,216,0.35);\" href=\"https:\/\/superiortransmissioninc.com\/es\/gear-rack\/\">Cremallera de engranajes\u00a0<\/a><\/div>\n<p><!-- Technical Specs Table --><\/p>\n<div style=\"width: 100%; max-width: 100%; min-width: 100%; margin-bottom: 36px;\">\n<h2 style=\"color: #1e3a5f; border-bottom: 3px solid #1d4ed8; padding-bottom: 8px; margin-bottom: 18px;\">Technical Specifications \u2014 EP-S45C Gear Rack Series (Unit: mm)<\/h2>\n<p style=\"color: #374151; line-height: 1.8; margin-bottom: 16px;\">All dimensions listed below are extracted from the production drawing for the EP-S45C <strong>gear rack<\/strong> series. The face pitch (Pt) equals Module \u00d7 \u03c0; cumulative pitch error (Fp) is the controlling tolerance parameter at DIN8 level 7. Four-side flat grinding followed by fine cutting ensures consistent face parallelism and tooth accuracy across the full rack length. Note: racks without mounting holes are also available \u2014 please indicate suffix &#8220;N&#8221; when ordering. Other dimensions and materials can be customised to drawing.<\/p>\n<p><!-- Scrollable wrapper for mobile --><\/p>\n<div style=\"width: 100%; max-width: 100%; min-width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch;\">\n<table style=\"width: 100%; max-width: 100%; min-width: 100%; border-collapse: collapse; table-layout: auto;\">\n<thead>\n<tr>\n<th style=\"background: linear-gradient(90deg,#1e3a5f,#1d4ed8); color: #fff; padding: 10px 8px; text-align: center; white-space: nowrap;\">Code<\/th>\n<th style=\"background: linear-gradient(90deg,#1d4ed8,#2563eb); color: #fff; padding: 10px 8px; text-align: center; white-space: nowrap;\">M\u00f3dulo<\/th>\n<th style=\"background: linear-gradient(90deg,#2563eb,#3b82f6); color: #fff; padding: 10px 8px; text-align: center; white-space: nowrap;\">Pt<\/th>\n<th style=\"background: linear-gradient(90deg,#3b82f6,#60a5fa); color: #fff; padding: 10px 8px; text-align: center; white-space: nowrap;\">L (mm)<\/th>\n<th style=\"background: linear-gradient(90deg,#60a5fa,#93c5fd); color: #fff; padding: 10px 8px; text-align: center; white-space: nowrap;\">Tooth No.<\/th>\n<th style=\"background: linear-gradient(90deg,#93c5fd,#60a5fa); color: #fff; padding: 10px 8px; text-align: center; white-space: nowrap;\">B<\/th>\n<th style=\"background: linear-gradient(90deg,#60a5fa,#3b82f6); color: #fff; padding: 10px 8px; text-align: center; white-space: nowrap;\">A0<\/th>\n<th style=\"background: linear-gradient(90deg,#3b82f6,#2563eb); color: #fff; padding: 10px 8px; text-align: center; white-space: nowrap;\">A1<\/th>\n<th style=\"background: linear-gradient(90deg,#2563eb,#1d4ed8); color: #fff; padding: 10px 8px; text-align: center; white-space: nowrap;\">D<\/th>\n<th style=\"background: linear-gradient(90deg,#1d4ed8,#1e3a5f); color: #fff; padding: 10px 8px; text-align: center; white-space: nowrap;\">I<\/th>\n<th style=\"background: linear-gradient(90deg,#1e3a5f,#1d4ed8); color: #fff; padding: 10px 8px; text-align: center; white-space: nowrap;\">Holes<\/th>\n<th style=\"background: linear-gradient(90deg,#1d4ed8,#2563eb); color: #fff; padding: 10px 8px; text-align: center; white-space: nowrap;\">A<\/th>\n<th style=\"background: linear-gradient(90deg,#2563eb,#3b82f6); color: #fff; padding: 10px 8px; text-align: center; white-space: nowrap;\">C1<\/th>\n<th style=\"background: linear-gradient(90deg,#3b82f6,#60a5fa); color: #fff; padding: 10px 8px; text-align: center; white-space: nowrap;\">C2<\/th>\n<th style=\"background: linear-gradient(90deg,#60a5fa,#93c5fd); color: #fff; padding: 10px 8px; text-align: center; white-space: nowrap;\">mi<\/th>\n<th style=\"background: linear-gradient(90deg,#93c5fd,#60a5fa); color: #fff; padding: 10px 8px; text-align: center; white-space: nowrap;\">D1<\/th>\n<th style=\"background: linear-gradient(90deg,#60a5fa,#3b82f6); color: #fff; padding: 10px 8px; text-align: center; white-space: nowrap;\">I1<\/th>\n<th style=\"background: linear-gradient(90deg,#3b82f6,#2563eb); color: #fff; padding: 10px 8px; text-align: center; white-space: nowrap;\">C3<\/th>\n<th style=\"background: linear-gradient(90deg,#2563eb,#1d4ed8); color: #fff; padding: 10px 8px; text-align: center; white-space: nowrap;\">Fp<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background: #f0f6ff;\">\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">661 010 050<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">1.5<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">4.7123<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">499.51<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">106<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">17<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">17<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">15.5<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">62.44<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">124.88<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">4<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">7<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">6<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">9.5<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">7<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">29<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">441.5<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">5.7<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">0.066<\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">661 010 100<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">1.5<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">4.7123<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">999.03<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">212<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">17<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">17<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">15.5<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">62.44<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">124.88<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">8<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">7<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">6<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">9.5<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">7<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">29<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">941.0<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">5.7<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">0.074<\/td>\n<\/tr>\n<tr style=\"background: #f0f6ff;\">\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">661 020 050<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">2<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">6.2831<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">502.65<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">80<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">24<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">24<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">22<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">62.83<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">125.66<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">4<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">8<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">7<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">11<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">7<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">31.3<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">440.1<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">5.7<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">0.066<\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">661 020 100<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">2<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">6.2831<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">1005.31<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">160<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">24<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">24<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">22<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">62.83<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">125.66<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">8<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">8<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">7<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">11<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">7<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">31.3<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">942.7<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">5.7<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">0.074<\/td>\n<\/tr>\n<tr style=\"background: #f0f6ff;\">\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">661 030 050<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">3<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">9.4247<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">508.94<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">54<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">29<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">29<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">26<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">63.62<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">127.23<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">4<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">9<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">10<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">15<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">9<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">34.4<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">440.1<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">7.7<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">0.066<\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">661 030 100<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">3<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">9.4247<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">1017.88<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">108<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">29<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">29<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">26<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">63.62<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">127.23<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">8<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">9<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">10<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">15<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">9<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">34.4<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">949.1<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">7.7<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">0.072<\/td>\n<\/tr>\n<tr style=\"background: #f0f6ff;\">\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">661 040 050<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">4<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">12.5666<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">502.65<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">40<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">39<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">39<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">35<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">62.83<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">125.66<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">4<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">12<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">10<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">15<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">9<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">37.5<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">427.7<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">7.7<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">0.072<\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">661 040 100<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">4<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">12.5666<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">1005.31<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">80<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">39<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">39<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">35<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">62.83<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">125.66<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">8<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">12<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">10<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">15<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">9<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">37.5<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">930.3<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">7.7<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">0.078<\/td>\n<\/tr>\n<tr style=\"background: #f0f6ff;\">\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">661 050 050<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">5<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">15.7079<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">502.65<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">32<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">49<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">39<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">34<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">62.83<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">125.66<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">4<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">12<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">14<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">20<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">13<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">30.1<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">442.4<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">11.7<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">0.072<\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">661 050 100<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">5<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">15.7079<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">1005.31<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">64<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">49<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">39<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">34<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">62.83<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">125.66<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">8<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">12<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">14<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">20<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">13<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">30.1<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">945.0<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">11.7<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">0.078<\/td>\n<\/tr>\n<tr style=\"background: #f0f6ff;\">\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">661 060 050<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">6<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">18.8495<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">508.94<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">27<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">59<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">49<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">43<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">63.62<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">127.23<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">4<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">16<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">18<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">26<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">17<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">31.4<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">446.1<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">15.7<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">0.072<\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">661 080 050<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">8<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">25.1327<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">502.65<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">20<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">79<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">79<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">71<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">62.83<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">125.66<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">4<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">25<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">22<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">33<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">21<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">26.6<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">449.5<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">19.7<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">0.08<\/td>\n<\/tr>\n<tr style=\"background: #f0f6ff;\">\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">661 100 100<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">10<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">31.4159<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">1005.31<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">32<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">99<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">99<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">89<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">62.83<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">125.66<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">8<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">32<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">33<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">48<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">32<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">125.67<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">754.0<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">19.7<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">0.09<\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">661 120 100<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">12<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">37.6991<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">1017.88<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">27<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">120<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">120<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">108<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">63.6<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">127.23<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">8<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">40<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">39<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">58<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">38<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">127.23<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">763.4<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">19.7<\/td>\n<td style=\"padding: 9px 8px; border-bottom: 1px solid #dbeafe; text-align: center; white-space: nowrap;\">0.09<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"color: #6b7280; margin-top: 10px;\"><em>Note: Pe (face pitch) = Module \u00d7 \u03c0; Fp = total cumulative pitch error. Unit: mm. Racks without holes available \u2014 add suffix &#8220;N&#8221; to code, e.g. 661020100-N. Custom dimensions and materials available to drawing.<\/em><\/p>\n<\/div>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1322\" src=\"https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-products-EP-S45C-Straight-Gear-Rack-\u2014-4-to-8-Hole-draft.webp\" alt=\"superiortransmissioninc-products-EP-S45C Straight Gear Rack \u2014 4 to 8 Hole-draft\" width=\"1000\" height=\"500\" title=\"\" srcset=\"https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-products-EP-S45C-Straight-Gear-Rack-\u2014-4-to-8-Hole-draft.webp 1000w, https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-products-EP-S45C-Straight-Gear-Rack-\u2014-4-to-8-Hole-draft-300x150.webp 300w, https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-products-EP-S45C-Straight-Gear-Rack-\u2014-4-to-8-Hole-draft-768x384.webp 768w, https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-products-EP-S45C-Straight-Gear-Rack-\u2014-4-to-8-Hole-draft-18x9.webp 18w, https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-products-EP-S45C-Straight-Gear-Rack-\u2014-4-to-8-Hole-draft-980x490.webp 980w, https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-products-EP-S45C-Straight-Gear-Rack-\u2014-4-to-8-Hole-draft-480x240.webp 480w, https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-products-EP-S45C-Straight-Gear-Rack-\u2014-4-to-8-Hole-draft-600x300.webp 600w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><!-- Product Image 1 --><\/p>\n<div style=\"width: 100%; max-width: 100%; min-width: 100%; text-align: center; margin-bottom: 32px;\"><\/div>\n<p><!-- Working Principle --><\/p>\n<div style=\"width: 100%; max-width: 100%; min-width: 100%; background: #fff; border-radius: 8px; border: 1px solid #dbeafe; padding: 26px 24px; box-sizing: border-box; margin-bottom: 32px;\">\n<h2 style=\"color: #1e3a5f; border-bottom: 3px solid #1d4ed8; padding-bottom: 8px; margin-bottom: 18px;\">Working Principle of a Straight Gear Rack<\/h2>\n<p style=\"color: #374151; line-height: 1.8; margin-bottom: 14px;\">A <strong>gear rack<\/strong> is the linearised form of a gear \u2014 instead of teeth arranged around a circular pitch diameter, the teeth are distributed along a flat bar. When a rotary pinion engages the rack, every full rotation of the pinion advances the rack by a distance equal to the pinion&#8217;s circumferential pitch (\u03c0 \u00d7 module \u00d7 number of pinion teeth). This direct relationship between angular input and linear output makes the <strong>rack and pinion gear<\/strong> pairing one of the most mechanically transparent drive mechanisms in engineering \u2014 no lead screw friction, no belt stretch, and no need to compensate for thermal elongation as you would with a ballscrew on long-travel axes.<\/p>\n<p style=\"color: #374151; line-height: 1.8; margin-bottom: 14px;\">The EP-S45C uses a <strong>straight gear rack<\/strong> (spur tooth) profile with a standard 20\u00b0 pressure angle. This means the tooth force is resolved into a radial component (pushing pinion and rack apart) and a tangential component (generating linear thrust). For the <strong>gear rack and pinion<\/strong> system designer, this geometry simplifies bearing selection because the radial load on the pinion shaft is predictable and consistent at any rack position. The DIN8 level 7 accuracy class governs the cumulative pitch error (Fp) \u2014 meaning the position error accumulated over the full rack length stays within the values tabulated in the specification, giving designers a reliable envelope for worst-case positioning deviation when used as a <strong>linear rack and pinion<\/strong> drive.<\/p>\n<p style=\"color: #374151; line-height: 1.8;\">Quenching and tempering to HB20-25\u00b0 treats the entire cross-section, not just the surface. This through-hardening approach raises the bulk yield strength and fatigue resistance while keeping the steel machinable for post-treatment fine cutting. The four-side flat grinding operation ensures all mounting faces are parallel and flat within tight tolerances, which matters when multiple <strong>gear rack<\/strong> sections are aligned end-to-end on a long machine bed. Pitch continuity across joints is maintained by careful length standardisation, and the pre-drilled mounting holes (4 or 8 depending on length) use a consistent hole pitch pattern that simplifies installation and alignment for engineers worldwide.<\/p>\n<\/div>\n<p><!-- Key Advantages --><\/p>\n<div style=\"width: 100%; max-width: 100%; min-width: 100%; margin-bottom: 36px;\">\n<h2 style=\"color: #1e3a5f; border-bottom: 3px solid #1d4ed8; padding-bottom: 8px; margin-bottom: 22px;\">Five Key Advantages<\/h2>\n<div style=\"width: 100%; max-width: 100%; min-width: 100%; display: grid; grid-template-columns: repeat(auto-fit,minmax(200px,1fr)); gap: 16px;\">\n<div style=\"background: linear-gradient(135deg,#eff6ff,#dbeafe); border-radius: 8px; padding: 20px; border-top: 4px solid #1d4ed8; box-sizing: border-box;\">\n<div style=\"font-size: 1.5em; margin-bottom: 8px;\">\ud83d\udd12<\/div>\n<p><strong style=\"color: #1e3a5f; display: block; margin-bottom: 8px;\">S45C Medium-Carbon Steel Construction<\/strong><\/p>\n<p style=\"color: #374151; margin: 0; line-height: 1.75;\">S45C is the internationally recognised benchmark material for structural <strong>gear rack<\/strong> production, offering a reliable combination of tensile strength, machinability, and response to heat treatment that cheaper mild steels cannot match.<\/p>\n<\/div>\n<div style=\"background: linear-gradient(135deg,#f0fdf4,#dcfce7); border-radius: 8px; padding: 20px; border-top: 4px solid #16a34a; box-sizing: border-box;\">\n<div style=\"font-size: 1.5em; margin-bottom: 8px;\">\ud83d\udcc8<\/div>\n<p><strong style=\"color: #1e3a5f; display: block; margin-bottom: 8px;\">Quenching &amp; Tempering HB20-25\u00b0<\/strong><\/p>\n<p style=\"color: #374151; margin: 0; line-height: 1.75;\">The full-section thermal treatment raises bulk hardness and fatigue life uniformly, providing long service intervals even in high-cycle <strong>duty gear rack<\/strong> applications such as material handling conveyors and machine tool transfer lines.<\/p>\n<\/div>\n<div style=\"background: linear-gradient(135deg,#fff7ed,#fed7aa); border-radius: 8px; padding: 20px; border-top: 4px solid #ea580c; box-sizing: border-box;\">\n<div style=\"font-size: 1.5em; margin-bottom: 8px;\">\ud83d\udd27<\/div>\n<p><strong style=\"color: #1e3a5f; display: block; margin-bottom: 8px;\">DIN8 Level 7 Accuracy<\/strong><\/p>\n<p style=\"color: #374151; margin: 0; line-height: 1.75;\">The defined Fp (cumulative pitch error) values at each module ensure engineers can predict worst-case positioning error for the full rack length \u2014 critical when specifying a <strong>spur gear rack<\/strong> for CNC axes or indexing tables.<\/p>\n<\/div>\n<div style=\"background: linear-gradient(135deg,#fdf4ff,#f3e8ff); border-radius: 8px; padding: 20px; border-top: 4px solid #9333ea; box-sizing: border-box;\">\n<div style=\"font-size: 1.5em; margin-bottom: 8px;\">\ud83d\udee0<\/div>\n<p><strong style=\"color: #1e3a5f; display: block; margin-bottom: 8px;\">Wide Module Range M1.5\u2013M12<\/strong><\/p>\n<p style=\"color: #374151; margin: 0; line-height: 1.75;\">With modules spanning 1.5 through 12, the EP-S45C series covers everything from light-duty positioning slides to heavy-load gantry drives, eliminating the need to source different rack types from multiple suppliers.<\/p>\n<\/div>\n<div style=\"background: linear-gradient(135deg,#fefce8,#fef08a); border-radius: 8px; padding: 20px; border-top: 4px solid #ca8a04; box-sizing: border-box;\">\n<div style=\"font-size: 1.5em; margin-bottom: 8px;\">\ud83d\udd04<\/div>\n<p><strong style=\"color: #1e3a5f; display: block; margin-bottom: 8px;\">Hole-Free &amp; Custom Rack Options<\/strong><\/p>\n<p style=\"color: #374151; margin: 0; line-height: 1.75;\">Specifying suffix &#8220;N&#8221; delivers a rack without mounting holes for applications using clamp-style fixings. Beyond that, <strong>custom gear rack<\/strong> lengths and cross-sections can be supplied to customer drawings, supporting unique machine layouts globally.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<p><!-- Material Section --><\/p>\n<div style=\"width: 100%; max-width: 100%; min-width: 100%; background: #f8faff; border-radius: 8px; border: 1px solid #dbeafe; padding: 26px 24px; box-sizing: border-box; margin-bottom: 32px;\">\n<h2 style=\"color: #1e3a5f; border-bottom: 3px solid #1d4ed8; padding-bottom: 8px; margin-bottom: 18px;\">Material &amp; Surface Treatment<\/h2>\n<p style=\"color: #374151; line-height: 1.8; margin-bottom: 14px;\">S45C is a JIS-standard medium-carbon steel equivalent to AISI 1045, DIN C45, or GB 45 steel. Its carbon content of approximately 0.42\u20130.48% places it in the sweet spot between case-hardening low-carbon steels and high-carbon tool steels \u2014 tough enough to resist fracture under shock loading, yet hard enough after quenching and tempering to provide the surface durability required by a working <strong>gear rack<\/strong>. The quenching and tempering process applied to the EP-S45C series brings bulk hardness to HB20-25\u00b0, which corresponds roughly to Rockwell B87\u201397 range, delivering significantly better wear resistance than an untreated or normalised rack of the same cross-section.<\/p>\n<p style=\"color: #374151; line-height: 1.8; margin-bottom: 14px;\">After heat treatment, each <strong>straight gear rack<\/strong> blank undergoes four-side flat grinding to restore dimensional accuracy distorted during the thermal cycle. This step is essential for downstream fine cutting of the tooth form: a flat, parallel reference surface ensures the tooth cutter tracks the intended involute profile without accumulated angular error. The final fine cutting operation brings the <strong>rack tooth<\/strong> geometry to DIN8 level 7 accuracy, with the cumulative pitch error (Fp) ranging from 0.066 mm for smaller modules up to 0.09 mm for M10\u2013M12 racks \u2014 well within the requirements of most industrial <strong>rack and pinion gear<\/strong> drives.<\/p>\n<p style=\"color: #374151; line-height: 1.8;\">An anti-corrosion protective finish is applied before packaging, preserving the ground surfaces during transit and storage. This is particularly relevant for customers in coastal industrial regions of Australia, the UK, and the Netherlands, where atmospheric humidity can accelerate surface oxidation on unprotected steel. Custom surface treatments \u2014 including zinc plating, black oxide, or specialised coatings \u2014 are available on request for operating environments with elevated corrosion risk.<\/p>\n<\/div>\n<p><img decoding=\"async\" style=\"max-width: 100%; height: auto; display: inline-block; border-radius: 6px;\" src=\"https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/07\/superiortransmissioninc-product-gear-rack.webp\" alt=\"S45C straight gear rack industrial product\" title=\"\"><!-- Applications --><\/p>\n<div style=\"width: 100%; max-width: 100%; min-width: 100%; margin-bottom: 36px;\">\n<h2 style=\"color: #1e3a5f; border-bottom: 3px solid #1d4ed8; padding-bottom: 8px; margin-bottom: 22px;\">Escenarios de aplicaci\u00f3n<\/h2>\n<p style=\"color: #374151; line-height: 1.8; margin-bottom: 20px;\">The EP-S45C <strong>gear rack<\/strong> is a versatile linear drive component used across a broad spectrum of industrial sectors. Its combination of proven S45C material, heat treatment, and DIN8 accuracy makes it well-suited wherever reliable rotary-to-linear conversion is needed at moderate-to-high load levels. The following scenarios represent typical deployments observed in Europe, the Asia-Pacific region, and the Americas.<\/p>\n<div style=\"width: 100%; max-width: 100%; min-width: 100%; display: grid; grid-template-columns: repeat(auto-fit,minmax(220px,1fr)); gap: 16px;\">\n<div style=\"background: #fff; border: 1px solid #dbeafe; border-radius: 8px; padding: 20px; box-sizing: border-box; border-left: 4px solid #1d4ed8;\">\n<p><strong style=\"color: #1e3a5f; display: block; margin-bottom: 8px;\">\ud83d\ude97 Automated Door &amp; Gate Systems<\/strong><\/p>\n<p style=\"color: #374151; margin: 0; line-height: 1.75;\">Industrial sliding doors, high-speed overhead doors, and perimeter security gates routinely use a <strong>rack and pinion gear<\/strong> drive for smooth, reliable operation. The EP-S45C straight rack handles the cyclic loading of automated door systems without backlash growth, even after millions of reversals.<\/p>\n<\/div>\n<div style=\"background: #fff; border: 1px solid #dbeafe; border-radius: 8px; padding: 20px; box-sizing: border-box; border-left: 4px solid #16a34a;\">\n<p><strong style=\"color: #1e3a5f; display: block; margin-bottom: 8px;\">\ud83c\udfed Machine Tool Axis Drives<\/strong><\/p>\n<p style=\"color: #374151; margin: 0; line-height: 1.75;\">Horizontal machining centres, boring mills, and heavy-duty planer-type machines use <strong>gears rack and pinion<\/strong> drives for both rapid traverse and feed motions. The DIN8 level 7 pitch accuracy keeps positioning error predictable across the full machine table travel.<\/p>\n<\/div>\n<div style=\"background: #fff; border: 1px solid #dbeafe; border-radius: 8px; padding: 20px; box-sizing: border-box; border-left: 4px solid #ea580c;\">\n<p><strong style=\"color: #1e3a5f; display: block; margin-bottom: 8px;\">\ud83d\udd27 Material Handling &amp; Transfer Equipment<\/strong><\/p>\n<p style=\"color: #374151; margin: 0; line-height: 1.75;\">Pallet shuttles, floor-mounted transfer cars, and stacker machines in automotive and logistics facilities use <strong>linear rack and pinion<\/strong> drives that must withstand heavy payloads and continuous duty cycles. The quenched-and-tempered S45C core handles these impact loads dependably.<\/p>\n<\/div>\n<div style=\"background: #fff; border: 1px solid #dbeafe; border-radius: 8px; padding: 20px; box-sizing: border-box; border-left: 4px solid #9333ea;\">\n<p><strong style=\"color: #1e3a5f; display: block; margin-bottom: 8px;\">\ud83d\udee0 Drill Press &amp; Vertical Boring Equipment<\/strong><\/p>\n<p style=\"color: #374151; margin: 0; line-height: 1.75;\">A <strong>drill press gear rack<\/strong> must translate quill handle rotation into precise Z-axis feed under cutting force. The fine-cut tooth profile of the EP-S45C provides smooth, backlash-controlled downfeed motion for heavy-duty drill press and radial arm drilling machine applications.<\/p>\n<\/div>\n<div style=\"background: #fff; border: 1px solid #dbeafe; border-radius: 8px; padding: 20px; box-sizing: border-box; border-left: 4px solid #ca8a04;\">\n<p><strong style=\"color: #1e3a5f; display: block; margin-bottom: 8px;\">\ud83c\udfe2 Construction &amp; Infrastructure Equipment<\/strong><\/p>\n<p style=\"color: #374151; margin: 0; line-height: 1.75;\">Rack-and-pinion hoists, rack-driven formwork carriages, and climbing platforms used on construction sites in South Korea, Canada, and Australia demand racks that combine load capacity with reliable engagement across contaminated or partially lubricated contact surfaces \u2014 exactly what the HB20-25\u00b0 treated EP-S45C delivers.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<p><!-- Related Products --><\/p>\n<div style=\"width: 100%; max-width: 100%; min-width: 100%; margin-bottom: 36px;\">\n<h2 style=\"color: #1e3a5f; border-bottom: 3px solid #1d4ed8; padding-bottom: 8px; margin-bottom: 22px;\">Related Products &amp; One-Stop Supply<\/h2>\n<p style=\"color: #374151; line-height: 1.8; margin-bottom: 20px;\">Sourcing a complete <strong>gear rack and pinion<\/strong> drive system from a single production facility removes the tolerance uncertainty that comes from mixing components made to different standards. We supply the rack, the mating pinion, and the supporting transmission components \u2014 so your procurement is streamlined and your system compatibility is guaranteed from the outset.<\/p>\n<div style=\"width: 100%; max-width: 100%; min-width: 100%; display: grid; grid-template-columns: repeat(auto-fit,minmax(240px,1fr)); gap: 20px;\">\n<div style=\"background: #fff; border: 1px solid #dbeafe; border-radius: 8px; padding: 22px; box-sizing: border-box; text-align: center;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto; border-radius: 5px; margin-bottom: 14px;\" src=\"https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-related-product-plastic-gear-rack.webp\" alt=\"Plastic gear rack for light-duty linear drives\" title=\"\"><br \/>\n<strong style=\"color: #1e3a5f; display: block; margin-bottom: 10px;\">Cremallera de engranajes de pl\u00e1stico<\/strong><\/p>\n<p style=\"color: #374151; line-height: 1.75; margin-bottom: 12px;\">Where corrosion resistance, weight reduction, or lubrication-free operation takes priority over maximum load capacity, our <a style=\"color: #1d4ed8; text-decoration: underline; font-weight: 600;\" href=\"https:\/\/superiortransmissioninc.com\/es\/plastic-gear-rack\/\">plastic gear rack<\/a> series offers an interchangeable alternative. Available in identical module ranges to the S45C steel rack, these polymer racks are widely specified in food processing, packaging, and medical automation \u2014 sectors where metal contamination risk and washdown requirements make steel unsuitable. The same <strong>rack pinion gear<\/strong> standard applies, so interchangeability within a machine family is straightforward.<\/p>\n<\/div>\n<div style=\"background: #fff; border: 1px solid #dbeafe; border-radius: 8px; padding: 22px; box-sizing: border-box; text-align: center;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto; border-radius: 5px; margin-bottom: 14px;\" src=\"https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-product-helical-gear.webp\" alt=\"Helical gear for rack and pinion pairing\" title=\"\"><br \/>\n<strong style=\"color: #1e3a5f; display: block; margin-bottom: 10px;\">Helical Gear (Pinion)<\/strong><\/p>\n<p style=\"color: #374151; line-height: 1.75; margin-bottom: 12px;\">For applications where noise level is a constraint, pairing the EP-S45C with a matching <a style=\"color: #1d4ed8; text-decoration: underline; font-weight: 600;\" href=\"https:\/\/miter-gear.com\/helical-gear\/\" target=\"_blank\" rel=\"noopener\">helical gear<\/a> pinion \u2014 rather than a standard spur pinion \u2014 reduces acoustic emission by distributing tooth mesh load over a longer progressive contact path. Our helical gear series covers modules M1 through M10, in bore-and-keyway or splined hub configurations, ground to matched precision grades. The <strong>rack and spur gear<\/strong> combination works well in open-loop systems; adding helical geometry lifts the solution into servo-controlled precision axes without changing the rack.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<p><!-- About Us --><\/p>\n<div style=\"width: 100%; max-width: 100%; min-width: 100%; background: linear-gradient(135deg,#1e3a5f,#1d4ed8); border-radius: 8px; padding: 28px 24px; box-sizing: border-box; margin-bottom: 32px; color: #fff;\">\n<h2 style=\"color: #fff; border-bottom: 2px solid rgba(255,255,255,0.25); padding-bottom: 8px; margin-bottom: 18px;\">About Us \u2014 Over a Decade of Mechanical Transmission Manufacturing<\/h2>\n<p style=\"color: #e0eaff; line-height: 1.8; margin-bottom: 14px;\">Our production facility has been dedicated to mechanical power transmission components for more than ten years. Throughout that time, continuous investment in CNC grinding centres, precision inspection equipment, and quality management systems has kept our output consistently aligned with international standards. The facility holds ISO 9001:2015 certification, which governs everything from raw material verification to final dimensional inspection and shipping documentation.<\/p>\n<p style=\"color: #e0eaff; line-height: 1.8; margin-bottom: 14px;\">The manufacturing scope is deliberately broad: agricultural gearboxes, worm gear reducers, planetary gear drives, PTO shafts, hydraulic cylinders, precision gears, roller chains, and industrial motors are all produced in-house. We also engineer and manufacture a comprehensive range of gearbox assemblies in ductile iron, grey cast iron, cast steel, investment cast steel, and cast aluminium, alongside sprockets, worm gear sets, pulleys, shafts, and both standard and engineered-to-specification mechanical parts.<\/p>\n<p style=\"color: #e0eaff; line-height: 1.8;\">El <strong>gear rack<\/strong> product line \u2014 covering straight, helical, and <strong>custom gear rack<\/strong> configurations across module M1.5 through M12 \u2014 is fully integrated into this production capability. Customers across the Netherlands, the UK, Australia, Canada, South Korea, Brazil, Colombia, and other global markets benefit from consolidated sourcing, consistent quality traceability, and prompt technical response throughout the order lifecycle.<\/p>\n<\/div>\n<p><!-- FAQ --><\/p>\n<div style=\"width: 100%; max-width: 100%; min-width: 100%; margin-bottom: 36px;\">\n<h2 style=\"color: #1e3a5f; border-bottom: 3px solid #1d4ed8; padding-bottom: 8px; margin-bottom: 22px;\">Preguntas frecuentes<\/h2>\n<div style=\"background: #fff; border: 1px solid #dbeafe; border-radius: 8px; margin-bottom: 12px; overflow: hidden;\">\n<div style=\"background: #f0f6ff; padding: 16px 20px; border-left: 4px solid #1d4ed8;\"><strong style=\"color: #1e3a5f;\">Q1. What is the best module size for an S45C straight gear rack being used in a heavy-duty automated door system for a European industrial facility?<\/strong><\/div>\n<div style=\"padding: 16px 20px; color: #374151; line-height: 1.8;\">Module selection for an automated door <strong>gear rack<\/strong> application depends primarily on the door weight, drive speed, and the pinion tooth count available on the selected actuator. For single-leaf industrial doors weighing up to around 500 kg, M3 to M4 is commonly specified. For large heavy-duty roller doors or sliding fire doors in the 500\u20132000 kg range \u2014 typical in European logistics and automotive plants \u2014 M5 or M6 is more appropriate, providing adequate tooth root bending strength without over-sizing the drive unit. The EP-S45C series covers M1.5 through M12, so the right module for any door system in the range is available as a stock item. For custom configurations, the suffix &#8220;N&#8221; eliminates pre-drilled holes when the installer prefers adhesive-bonded or clamp-style fixing.<\/div>\n<\/div>\n<div style=\"background: #fff; border: 1px solid #dbeafe; border-radius: 8px; margin-bottom: 12px; overflow: hidden;\">\n<div style=\"background: #f0f6ff; padding: 16px 20px; border-left: 4px solid #1d4ed8;\"><strong style=\"color: #1e3a5f;\">How does quenching and tempering treatment on an S45C gear rack compare to case hardening for a rack and pinion press application in North American manufacturing?<\/strong><\/div>\n<div style=\"padding: 16px 20px; color: #374151; line-height: 1.8;\">Quenching and tempering (Q&amp;T) heats the whole <strong>gear rack<\/strong> bar to austenising temperature, quenches it to martensite, then tempers to the target hardness \u2014 in this case HB20-25\u00b0. The result is a uniform hardness throughout the cross-section. Case hardening, by contrast, produces a hard outer shell over a softer core. For a <strong>rack and pinion press<\/strong> or heavy transfer application in North America, Q&amp;T offers a meaningful advantage: impact loads that penetrate below a case-hardened layer (which is typically only 0.8\u20132 mm deep) simply meet the same tough material, rather than a soft core that can crack under the hard case. The trade-off is that Q&amp;T surface hardness is lower than a fully case-hardened tooth flank, so wear rate is slightly higher in abrasive or poorly lubricated environments. For clean, lubricated industrial press applications, Q&amp;T at HB20-25\u00b0 is the standard and economically sound specification.<\/div>\n<\/div>\n<div style=\"background: #fff; border: 1px solid #dbeafe; border-radius: 8px; margin-bottom: 12px; overflow: hidden;\">\n<div style=\"background: #f0f6ff; padding: 16px 20px; border-left: 4px solid #1d4ed8;\"><strong style=\"color: #1e3a5f;\">Where can engineers in Australia and South Korea source a straight gear rack with pre-drilled mounting holes and DIN8 precision for a machine tool carriage retrofit project?<\/strong><\/div>\n<div style=\"padding: 16px 20px; color: #374151; line-height: 1.8;\">The EP-S45C <strong>straight gear rack<\/strong> series is available with 4 or 8 pre-drilled mounting holes (depending on rack length) at standardised hole pitch intervals \u2014 making it directly suitable for retrofit projects where the original rack bolting pattern is preserved. DIN8 level 7 accuracy is the governing tolerance class, which aligns with the original equipment specifications of most European and Japanese machine tools manufactured from the 1990s onward. For machine tool carriage retrofits in Australia and South Korea, standard lengths of approximately 500 mm and 1000 mm cover the most common carriage travel ranges, and multiple sections can be aligned end-to-end for longer travels. Our technical documentation includes the full Fp (cumulative pitch error) table so retrofit engineers can verify compatibility with the servo controller&#8217;s positioning error budget before ordering.<\/div>\n<\/div>\n<div style=\"background: #fff; border: 1px solid #dbeafe; border-radius: 8px; margin-bottom: 12px; overflow: hidden;\">\n<div style=\"background: #f0f6ff; padding: 16px 20px; border-left: 4px solid #1d4ed8;\"><strong style=\"color: #1e3a5f;\">When should a design engineer in the UK consider switching from a steel gear rack to a plastic gear rack for a light-duty conveyor positioning system in a food production environment?<\/strong><\/div>\n<div style=\"padding: 16px 20px; color: #374151; line-height: 1.8;\">The decision hinges on three practical factors: load, hygiene requirement, and maintenance access. A <strong>plastic gear rack<\/strong> becomes the preferred choice when all three of the following apply: (1) the transmitted thrust force is well below the polymer&#8217;s tooth shear limit for the specified module \u2014 typically under 300\u2013400 N for M3 acetal racks; (2) the operating environment involves frequent washdown cycles, wet conditions, or chemical cleaning agents that would corrode an uncoated S45C steel <strong>gear rack<\/strong> even with a protective finish; and (3) the system does not require periodic re-lubrication, since plastic racks run dry more readily than steel. For food production facilities in the UK subject to BRC or SQF audit requirements, the absence of metal contact and lubricant contamination risk around food zones often makes the <strong>plastic rack and pinion<\/strong> the mandatory specification, regardless of load.<\/div>\n<\/div>\n<div style=\"background: #fff; border: 1px solid #dbeafe; border-radius: 8px; margin-bottom: 12px; overflow: hidden;\">\n<div style=\"background: #f0f6ff; padding: 16px 20px; border-left: 4px solid #1d4ed8;\"><strong style=\"color: #1e3a5f;\">What are the most important factors to check when calculating the gear ratio of a rack and pinion drive for a construction hoist or climbing platform application in Canada?<\/strong><\/div>\n<div style=\"padding: 16px 20px; color: #374151; line-height: 1.8;\">For a construction hoist in Canada \u2014 governed by standards such as CSA Z256 \u2014 the <strong>gear ratio of rack and pinion<\/strong> calculation starts with establishing required cage speed and motor output speed, then working backward to determine pinion tooth count. Linear speed = \u03c0 \u00d7 Module \u00d7 Pinion teeth \u00d7 RPM. Once the pinion is sized, check tooth root bending stress at maximum load (including dynamic factor), and verify that the safety factor meets the local standard \u2014 typically 2.5 to 3.5 for personnel hoists. The <strong>duty gear rack<\/strong> must also be sized for cumulative fatigue over the expected number of rack engagements per service interval. The EP-S45C M8 or M10 racks are commonly used in construction hoist applications, providing the cross-section depth needed to carry hoist rack bending moments at mounting points. Always verify that rack section splicing joints are positioned away from the maximum-stress travel zone.<\/div>\n<\/div>\n<\/div>\n<p style=\"text-align: right;\">Editor: PXY<\/p>","protected":false},"excerpt":{"rendered":"<p>El <strong>EP-S45C gear rack<\/strong> series is a robust, cost-effective linear motion solution built from S45C medium-carbon steel and finished to DIN8 international level 7 accuracy. Available across a wide range of modules \u2014 from M1.5 through M12 \u2014 with rack lengths covering approximately 500 mm and 1000 mm variants, this <strong>straight gear rack<\/strong> provides the mechanical foundation for reliable <strong>rack and pinion gear<\/strong> drives in everything from machine tool carriages to automated door systems. The quenching and tempering treatment brings bulk hardness to HB20-25\u00b0, delivering a balanced combination of surface wear resistance and core toughness that suits prolonged service in industrial environments across Europe, North America, Australia, South Korea, and beyond. Mounting holes (4 or 8 holes depending on length) are machined at precise pitch intervals, and hole-free versions are available on request \u2014 just add suffix &#8220;N&#8221; to the model code, e.g. 661020100-N.<\/p>","protected":false},"featured_media":1321,"template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[53,54],"product_tag":[],"class_list":["post-1314","product","type-product","status-publish","has-post-thumbnail","product_cat-gear-rack","product_cat-straight-gear-rack","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/superiortransmissioninc.com\/es\/wp-json\/wp\/v2\/product\/1314","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/superiortransmissioninc.com\/es\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/superiortransmissioninc.com\/es\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/superiortransmissioninc.com\/es\/wp-json\/wp\/v2\/media\/1321"}],"wp:attachment":[{"href":"https:\/\/superiortransmissioninc.com\/es\/wp-json\/wp\/v2\/media?parent=1314"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/superiortransmissioninc.com\/es\/wp-json\/wp\/v2\/product_brand?post=1314"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/superiortransmissioninc.com\/es\/wp-json\/wp\/v2\/product_cat?post=1314"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/superiortransmissioninc.com\/es\/wp-json\/wp\/v2\/product_tag?post=1314"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}