{"id":1478,"date":"2026-09-07T02:30:19","date_gmt":"2026-09-07T02:30:19","guid":{"rendered":"https:\/\/superiortransmissioninc.com\/?post_type=product&#038;p=1478"},"modified":"2026-09-07T02:30:19","modified_gmt":"2026-09-07T02:30:19","slug":"ep-s45c-helical-gear-rack-quenching-tempering-hb20-25","status":"publish","type":"product","link":"https:\/\/superiortransmissioninc.com\/ko\/product\/ep-s45c-helical-gear-rack-quenching-tempering-hb20-25\/","title":{"rendered":"EP-S45C Helical Gear Rack Quenching &#038; Tempering HB20\u201325\u00b0"},"content":{"rendered":"<div style=\"background: linear-gradient(135deg, #1a2744 0%, #2c3e6b 60%, #1e4d8c 100%); padding: 48px 24px; text-align: center; width: 100%; max-width: 100%; min-width: 100%; box-sizing: border-box;\">\n<p style=\"color: #7eb8f7; letter-spacing: 2px; margin: 0 0 12px 0; text-transform: uppercase;\">Precision Mechanical Transmission<\/p>\n<h1 style=\"color: #ffffff; margin: 0 0 16px 0; line-height: 1.25;\">EP-S45C Helical Gear Rack<\/h1>\n<p style=\"color: #b8d4f0; margin: 0 0 24px 0; line-height: 1.7; max-width: 680px; display: inline-block;\">Quenching &amp; Tempering HB20\u201325\u00b0 \u00b7 DIN8 International Level 7 \u00b7 Right Helix Angle 19\u00b031\u203242\u2033<\/p>\n<div style=\"margin-top: 8px;\"><a style=\"display: inline-block; background: #e8a020; color: #ffffff; padding: 14px 36px; text-decoration: none; border-radius: 4px; font-weight: bold; letter-spacing: 0.5px;\" href=\"https:\/\/superiortransmissioninc.com\/ko\/gear-rack\/\"> \uae30\uc5b4\ub799<\/a><\/div>\n<\/div>\n<p><!-- Key Technical Specs --><\/p>\n<div style=\"background: #ffffff; padding: 40px 24px; width: 100%; max-width: 100%; min-width: 100%; box-sizing: border-box;\">\n<h2 style=\"color: #1a2744; margin: 0 0 8px 0; border-left: 4px solid #2563eb; padding-left: 14px;\">\uae30\uc220 \uc0ac\uc591<\/h2>\n<p style=\"color: #6b7280; margin: 0 0 24px 0;\">Unit \/ Dimension: mm \u00a0|\u00a0 End pitch Pe = Module \u00d7 \u03c0 \/ COS(19\u00b031\u203242\u2033) \u00a0|\u00a0 Fp = Total pitch error<\/p>\n<p><!-- Scrollable table wrapper for mobile --><\/p>\n<div style=\"overflow-x: auto; -webkit-overflow-scrolling: touch; width: 100%; max-width: 100%; min-width: 100%;\">\n<table style=\"width: 100%; border-collapse: collapse; table-layout: fixed; min-width: 1100px;\">\n<colgroup>\n<col style=\"width: 90px;\" \/>\n<col style=\"width: 62px;\" \/>\n<col style=\"width: 62px;\" \/>\n<col style=\"width: 62px;\" \/>\n<col style=\"width: 62px;\" \/>\n<col style=\"width: 62px;\" \/>\n<col style=\"width: 44px;\" \/>\n<col style=\"width: 44px;\" \/>\n<col style=\"width: 44px;\" \/>\n<col style=\"width: 44px;\" \/>\n<col style=\"width: 44px;\" \/>\n<col style=\"width: 44px;\" \/>\n<col style=\"width: 44px;\" \/>\n<col style=\"width: 44px;\" \/>\n<col style=\"width: 44px;\" \/>\n<col style=\"width: 44px;\" \/>\n<col style=\"width: 44px;\" \/>\n<col style=\"width: 62px;\" \/>\n<col style=\"width: 44px;\" \/>\n<col style=\"width: 44px;\" \/> <\/colgroup>\n<thead>\n<tr style=\"background: linear-gradient(90deg, #1a2744 0%, #2563eb 100%);\">\n<th style=\"color: #ffffff; padding: 10px 6px; text-align: center; white-space: nowrap;\">Code<\/th>\n<th style=\"color: #ffffff; padding: 10px 6px; text-align: center; white-space: nowrap;\">\uae30\uc900 \uce58\uc218<\/th>\n<th style=\"color: #ffffff; padding: 10px 6px; text-align: center; white-space: nowrap;\">Pt<\/th>\n<th style=\"color: #ffffff; padding: 10px 6px; text-align: center; white-space: nowrap;\">L<\/th>\n<th style=\"color: #ffffff; padding: 10px 6px; text-align: center; white-space: nowrap;\">L2<\/th>\n<th style=\"color: #ffffff; padding: 10px 6px; text-align: center; white-space: nowrap;\">Tooth No.<\/th>\n<th style=\"color: #ffffff; padding: 10px 6px; text-align: center;\">\ube44<\/th>\n<th style=\"color: #ffffff; padding: 10px 6px; text-align: center;\">A0<\/th>\n<th style=\"color: #ffffff; padding: 10px 6px; text-align: center;\">A1<\/th>\n<th style=\"color: #ffffff; padding: 10px 6px; text-align: center;\">D<\/th>\n<th style=\"color: #ffffff; padding: 10px 6px; text-align: center;\">\ub098<\/th>\n<th style=\"color: #ffffff; padding: 10px 6px; text-align: center; white-space: nowrap;\">Hole No.<\/th>\n<th style=\"color: #ffffff; padding: 10px 6px; text-align: center;\">\uc5d0\uc774<\/th>\n<th style=\"color: #ffffff; padding: 10px 6px; text-align: center;\">C1<\/th>\n<th style=\"color: #ffffff; padding: 10px 6px; text-align: center;\">C2<\/th>\n<th style=\"color: #ffffff; padding: 10px 6px; text-align: center;\">\uc774\uc790\ud615<\/th>\n<th style=\"color: #ffffff; padding: 10px 6px; text-align: center;\">D1<\/th>\n<th style=\"color: #ffffff; padding: 10px 6px; text-align: center;\">I1<\/th>\n<th style=\"color: #ffffff; padding: 10px 6px; text-align: center;\">C3<\/th>\n<th style=\"color: #ffffff; padding: 10px 6px; text-align: center;\">Fp<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background: #f0f5ff;\">\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">662 010 050<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">1.5<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">4.9999<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">500.00<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">6<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">100<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">17<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">17<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">15.5<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">62.5<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">125<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">4<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">7<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">6<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">9.5<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">7<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">31.7<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">436.6<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">5.7<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">0.066<\/td>\n<\/tr>\n<tr style=\"background: #ffffff;\">\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">662 010 100<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">1.5<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">4.9999<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">1000.00<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">6<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">200<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">17<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">17<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">15.5<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">62.5<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">125<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">8<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">7<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">6<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">9.5<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">7<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">31.7<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">936.6<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">5.7<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">0.074<\/td>\n<\/tr>\n<tr style=\"background: #f0f5ff;\">\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">662 015 050<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">1.5<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">4.9999<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">500.00<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">6.74<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">100<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">19<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">19<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">17.5<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">62.5<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">125<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">4<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">8<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">7<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">11<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">7<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">31.7<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">436.6<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">5.7<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">0.066<\/td>\n<\/tr>\n<tr style=\"background: #ffffff;\">\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">662 020 050<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">2<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">6.6666<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">500.00<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">8.5<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">75<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">24<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">24<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">22<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">62.5<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">125<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">4<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">8<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">7<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">11<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">7<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">31.7<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">436.6<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">5.7<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">0.066<\/td>\n<\/tr>\n<tr style=\"background: #f0f5ff;\">\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">662 030 050<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">3<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">9.9999<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">500.00<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">10.3<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">50<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">29<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">29<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">26<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">62.5<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">125<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">4<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">9<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">10<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">15<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">9<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">35.0<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">430.0<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">7.7<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">0.066<\/td>\n<\/tr>\n<tr style=\"background: #ffffff;\">\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">662 030 100<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">3<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">9.9999<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">1000.00<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">10.3<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">100<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">29<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">29<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">26<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">62.5<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">125<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">8<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">9<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">10<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">15<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">9<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">35.0<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">930.0<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">7.7<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">0.072<\/td>\n<\/tr>\n<tr style=\"background: #f0f5ff;\">\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">662 040 050<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">4<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">13.3333<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">506.67<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">13.8<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">38<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">39<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">39<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">35<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">62.5<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">125<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">4<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">12<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">10<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">15<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">9<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">33.3<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">433.0<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">7.7<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">0.072<\/td>\n<\/tr>\n<tr style=\"background: #ffffff;\">\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">662 050 050<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">5<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">16.6666<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">500.00<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">17.4<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">30<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">49<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">39<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">34<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">62.5<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">125<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">4<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">12<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">14<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">20<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">13<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">37.5<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">425.0<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">11.7<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">0.072<\/td>\n<\/tr>\n<tr style=\"background: #f0f5ff;\">\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">662 060 050<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">6<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">19.9999<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">500.00<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">20.9<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">25<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">59<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">49<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">43<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">62.5<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">125<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">4<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">16<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">18<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">26<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">17<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">37.5<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">425.0<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">15.7<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">0.072<\/td>\n<\/tr>\n<tr style=\"background: #ffffff;\">\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">662 080 050<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">8<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">26.6667<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">480.00<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">28.0<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">18<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">79<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">79<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">71<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">60.0<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">120<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">4<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">25<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">22<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">33<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">21<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">120<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">240.0<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">19.7<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">0.08<\/td>\n<\/tr>\n<tr style=\"background: #f0f5ff;\">\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">662 100 100<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">10<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">33.3333<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">1000.00<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">35.11<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">30<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">99<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">99<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">89<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">62.5<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">125<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">8<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">32<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">33<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">48<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">32<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">125<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">750.0<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">19.7<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">0.09<\/td>\n<\/tr>\n<tr style=\"background: #ffffff;\">\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">662 120 100<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">12<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">39.9999<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">1000.00<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">42.56<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">25<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">120<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">120<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">108<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">40<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">125<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">8<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">40<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">39<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">58<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">38<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">125<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">750.0<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">19.7<\/td>\n<td style=\"padding: 8px 6px; text-align: center; border-bottom: 1px solid #e2e8f0;\">0.09<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"color: #6b7280; margin: 12px 0 0 0; line-height: 1.6;\">Racks without holes are also available \u2014 append &#8220;N&#8221; to the model code (e.g. STOER010N). Custom dimensions and materials can be supplied based on engineering drawings.<\/p>\n<\/div>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1482\" src=\"https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-products-EP-S45C-Helical-Gear-Rack-Quenching-Tempering-HB20\u201325\u00b0-draft.webp\" alt=\"\" width=\"1000\" height=\"500\" title=\"\" srcset=\"https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-products-EP-S45C-Helical-Gear-Rack-Quenching-Tempering-HB20\u201325\u00b0-draft.webp 1000w, https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-products-EP-S45C-Helical-Gear-Rack-Quenching-Tempering-HB20\u201325\u00b0-draft-300x150.webp 300w, https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-products-EP-S45C-Helical-Gear-Rack-Quenching-Tempering-HB20\u201325\u00b0-draft-768x384.webp 768w, https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-products-EP-S45C-Helical-Gear-Rack-Quenching-Tempering-HB20\u201325\u00b0-draft-18x9.webp 18w, https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-products-EP-S45C-Helical-Gear-Rack-Quenching-Tempering-HB20\u201325\u00b0-draft-980x490.webp 980w, https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-products-EP-S45C-Helical-Gear-Rack-Quenching-Tempering-HB20\u201325\u00b0-draft-480x240.webp 480w, https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-products-EP-S45C-Helical-Gear-Rack-Quenching-Tempering-HB20\u201325\u00b0-draft-600x300.webp 600w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><!-- How It Works --><\/p>\n<div style=\"background: #f7f9fc; padding: 40px 24px; width: 100%; max-width: 100%; min-width: 100%; box-sizing: border-box;\">\n<h2 style=\"color: #1a2744; margin: 0 0 20px 0; border-left: 4px solid #2563eb; padding-left: 14px;\">How the Helical Rack and Pinion Works<\/h2>\n<p style=\"color: #374151; line-height: 1.8; margin: 0 0 18px 0;\">The working principle of a <strong>helical rack and pinion<\/strong> system is straightforward but mechanically elegant. A circular pinion gear rotates about a fixed axis, and its teeth engage the angled tooth profile of the stationary or sliding <strong>gear rack<\/strong>. Because the helix angle (here 19\u00b031\u203242\u2033) causes each tooth to enter mesh gradually rather than all at once, load is distributed across a contact line that sweeps across the full tooth face during engagement. This dramatically reduces the impulse force per unit time, translating into lower vibration, quieter operation, and higher sustainable torque for any given cross-section compared to an equivalent <strong>spur gear rack<\/strong>.<\/p>\n<p style=\"color: #374151; line-height: 1.8; margin: 0 0 18px 0;\">Motion transmission in a <strong>rack and pinion gear<\/strong> assembly is governed by a simple relationship: linear travel per pinion revolution equals the rack&#8217;s circular pitch multiplied by the number of pinion teeth. This predictable <strong>gear ratio of rack and pinion<\/strong> allows designers to select module and tooth count to achieve precise feed rates in machine tools, accurate positioning in <strong>rack and pinion linear slide<\/strong> assemblies, and reliable stroke control in industrial presses. The four-side flat-grinding finish on the EP-S45C ensures mounting faces are geometrically true, simplifying integration with linear guide rail systems or structural extrusions.<\/p>\n<\/div>\n<p><!-- Product Overview --><\/p>\n<div style=\"background: #f7f9fc; padding: 40px 24px; width: 100%; max-width: 100%; min-width: 100%; box-sizing: border-box;\">\n<h2 style=\"color: #1a2744; margin: 0 0 20px 0; border-left: 4px solid #2563eb; padding-left: 14px;\">What Is a Helical Gear Rack?<\/h2>\n<p style=\"color: #374151; line-height: 1.8; margin: 0 0 18px 0;\">\uc5d0\uc774 <strong>gear rack<\/strong> is a flat or straight bar with teeth machined along one face, designed to mesh with a rotating pinion gear and convert rotary motion into precise linear displacement. The EP-S45C is a helical-tooth variant \u2014 meaning the tooth profile is cut at an angle (right helix angle 19\u00b031\u203242\u2033) rather than parallel to the axis \u2014 which produces significantly smoother engagement, lower vibration, and higher load capacity compared to a straight spur gear rack. Because multiple teeth share the load simultaneously, the helical <strong>gear rack<\/strong> tolerates heavy-duty cyclic forces without the impact shock that plagues spur profiles. This makes the EP-S45C the preferred choice wherever quieter operation and extended service life are non-negotiable requirements.<\/p>\n<p style=\"color: #374151; line-height: 1.8; margin: 0 0 18px 0;\">The raw bar stock is S45C medium-carbon steel, chosen for its reliable machinability and excellent response to heat treatment. After the four-side flat-grinding and fine-cutting production process, each <strong>linear gear rack<\/strong> receives a quenching and tempering hardness treatment reaching HB20\u201325\u00b0, locking in a tough, wear-resistant surface that maintains dimensional stability across a wide operating temperature range. The result is a <strong>rack and pinion gear<\/strong> component that engineers can integrate into CNC gantry systems, automated logistics lines, heavy-duty shelves, and machine tool slides with confidence in long-term precision retention.<\/p>\n<p style=\"color: #374151; line-height: 1.8; margin: 0;\">Conforming to DIN8 International Level 7 accuracy standards, the EP-S45C sits firmly in the precision segment of the <strong>gear rack and pinion<\/strong> market \u2014 tight enough for high-repeatability automation yet commercially practical for industrial-scale procurement. Custom lengths, hole patterns, and alternative materials are available on request; racks without holes are also supplied (suffix &#8220;N&#8221; appended to the model code, e.g. STOER010N).<\/p>\n<\/div>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1481\" src=\"https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-products-EP-S45C-Helical-Gear-Rack-Quenching-Tempering-HB20\u201325\u00b0.webp\" alt=\"superiortransmissioninc-products-EP-S45C Helical Gear Rack Quenching &amp; Tempering HB20\u201325\u00b0\" width=\"800\" height=\"800\" title=\"\" srcset=\"https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-products-EP-S45C-Helical-Gear-Rack-Quenching-Tempering-HB20\u201325\u00b0.webp 800w, https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-products-EP-S45C-Helical-Gear-Rack-Quenching-Tempering-HB20\u201325\u00b0-300x300.webp 300w, https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-products-EP-S45C-Helical-Gear-Rack-Quenching-Tempering-HB20\u201325\u00b0-150x150.webp 150w, https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-products-EP-S45C-Helical-Gear-Rack-Quenching-Tempering-HB20\u201325\u00b0-768x768.webp 768w, https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-products-EP-S45C-Helical-Gear-Rack-Quenching-Tempering-HB20\u201325\u00b0-12x12.webp 12w, https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-products-EP-S45C-Helical-Gear-Rack-Quenching-Tempering-HB20\u201325\u00b0-480x480.webp 480w, https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-products-EP-S45C-Helical-Gear-Rack-Quenching-Tempering-HB20\u201325\u00b0-600x600.webp 600w, https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-products-EP-S45C-Helical-Gear-Rack-Quenching-Tempering-HB20\u201325\u00b0-100x100.webp 100w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><!-- Key Advantages --><\/p>\n<div style=\"background: #ffffff; padding: 40px 24px; width: 100%; max-width: 100%; min-width: 100%; box-sizing: border-box;\">\n<h2 style=\"color: #1a2744; margin: 0 0 28px 0; border-left: 4px solid #2563eb; padding-left: 14px;\">Five Key Advantages<\/h2>\n<div style=\"display: flex; flex-wrap: wrap; gap: 16px; width: 100%; max-width: 100%; min-width: 100%; box-sizing: border-box;\">\n<div style=\"background: linear-gradient(135deg, #eef4ff 0%, #f0f7ff 100%); border-left: 4px solid #2563eb; border-radius: 6px; padding: 24px 20px; flex: 1 1 260px; box-sizing: border-box;\">\n<h3 style=\"color: #1a2744; margin: 0 0 10px 0;\">Smooth, Quiet Engagement<\/h3>\n<p style=\"color: #374151; line-height: 1.75; margin: 0;\">The helical tooth geometry creates a rolling contact line rather than a full-width impact at every mesh cycle. This progressive load entry reduces noise and vibration, making the EP-S45C well-suited to environments where acoustic quality matters \u2014 automated warehouses, medical imaging gantries, and precision grinding machines.<\/p>\n<\/div>\n<div style=\"background: linear-gradient(135deg, #eef4ff 0%, #f0f7ff 100%); border-left: 4px solid #e8a020; border-radius: 6px; padding: 24px 20px; flex: 1 1 260px; box-sizing: border-box;\">\n<h3 style=\"color: #1a2744; margin: 0 0 10px 0;\">High Load Capacity<\/h3>\n<p style=\"color: #374151; line-height: 1.75; margin: 0;\">With teeth cut from S45C medium-carbon steel and hardened to HB20\u201325\u00b0 through quenching and tempering, this <strong>duty gear rack<\/strong> handles elevated tangential and axial forces without plastic deformation. Multiple teeth share the load simultaneously, so peak contact stress stays within safe limits even under sudden dynamic loads typical of industrial portal robots.<\/p>\n<\/div>\n<div style=\"background: linear-gradient(135deg, #eef4ff 0%, #f0f7ff 100%); border-left: 4px solid #16a34a; border-radius: 6px; padding: 24px 20px; flex: 1 1 260px; box-sizing: border-box;\">\n<h3 style=\"color: #1a2744; margin: 0 0 10px 0;\">DIN8 Level 7 Precision<\/h3>\n<p style=\"color: #374151; line-height: 1.75; margin: 0;\">Every bar is produced to DIN8 International Level 7 tolerance, meaning tooth-to-tooth and cumulative pitch errors are tightly controlled. For applications such as <strong>rack and pinion linear slide<\/strong> positioning or multi-axis CNC routing, this accuracy grade ensures repeatable positioning without backlash compensation becoming a constant maintenance burden.<\/p>\n<\/div>\n<div style=\"background: linear-gradient(135deg, #eef4ff 0%, #f0f7ff 100%); border-left: 4px solid #dc2626; border-radius: 6px; padding: 24px 20px; flex: 1 1 260px; box-sizing: border-box;\">\n<h3 style=\"color: #1a2744; margin: 0 0 10px 0;\">Flexible Length Options<\/h3>\n<p style=\"color: #374151; line-height: 1.75; margin: 0;\">Standard bars come in 500 mm and 1,000 mm lengths across a full module range from M1.5 to M12. Because the tooth pitch is precise across the entire bar, multiple bars can be butted end-to-end to form an extended <strong>linear rack and pinion<\/strong> drive without detectable step errors at the joints \u2014 a key feature for long-travel machine axes.<\/p>\n<\/div>\n<div style=\"background: linear-gradient(135deg, #eef4ff 0%, #f0f7ff 100%); border-left: 4px solid #7c3aed; border-radius: 6px; padding: 24px 20px; flex: 1 1 260px; box-sizing: border-box;\">\n<h3 style=\"color: #1a2744; margin: 0 0 10px 0;\">Custom-Ready Design<\/h3>\n<p style=\"color: #374151; line-height: 1.75; margin: 0;\">Hole-free variants (suffix &#8220;N&#8221;), alternative alloy steels, special coatings, and non-standard cross-sections are all available on request. The four-side ground mounting datum planes allow the rack to bolt directly to precision-machined sub-plates or extrusion-profile systems without shimming, accelerating installation on the shop floor.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<p><!-- Material Section --><\/p>\n<div style=\"background: #f7f9fc; padding: 40px 24px; width: 100%; max-width: 100%; min-width: 100%; box-sizing: border-box;\">\n<h2 style=\"color: #1a2744; margin: 0 0 20px 0; border-left: 4px solid #2563eb; padding-left: 14px;\">Material &amp; Heat Treatment<\/h2>\n<p style=\"color: #374151; line-height: 1.8; margin: 0 0 18px 0;\">S45C is a JIS-standard medium-carbon steel (roughly equivalent to AISI 1045 and DIN C45) that balances machinability, tensile strength, and heat-treatment response in a commercially available grade. With carbon content around 0.42\u20130.48%, it machines cleanly to fine-tooth geometry while accepting quench-and-temper heat treatment to achieve the targeted surface hardness of HB20\u201325\u00b0. The quenching step rapidly cools the steel from austenitizing temperature, producing a hard martensitic structure, while the subsequent tempering cycle reduces internal stress and restores enough toughness to withstand shock loading \u2014 the precise balance needed for a <strong>heavy-duty shelves gear rack<\/strong> or a high-cycle automation axis.<\/p>\n<p style=\"color: #374151; line-height: 1.8; margin: 0 0 18px 0;\">The four-side flat-grinding and fine-cutting production process removes material symmetrically, maintaining straightness and eliminating residual bending stress induced during the heat treatment stage. Each ground face serves as a reference datum, which is why the EP-S45C can be mounted without the surface preparation steps typically required for rolled or milled rack stock. This production discipline is where the DIN8 Level 7 accuracy actually comes from \u2014 controlled tooth geometry achieved not just through the hobbing or milling step, but by the entire sequence of operations that follows it.<\/p>\n<\/div>\n<p><!-- Application Scenarios --><\/p>\n<div style=\"background: #ffffff; padding: 40px 24px; width: 100%; max-width: 100%; min-width: 100%; box-sizing: border-box;\">\n<h2 style=\"color: #1a2744; margin: 0 0 28px 0; border-left: 4px solid #2563eb; padding-left: 14px;\">\uc751\uc6a9 \uc2dc\ub098\ub9ac\uc624<\/h2>\n<div style=\"display: flex; flex-wrap: wrap; gap: 16px; width: 100%; max-width: 100%; min-width: 100%; box-sizing: border-box;\">\n<div style=\"background: #f0f5ff; border-radius: 8px; padding: 22px 18px; flex: 1 1 200px; box-sizing: border-box;\">\n<div style=\"background: #2563eb; color: #fff; width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin-bottom: 14px; font-weight: bold;\">1<\/div>\n<h3 style=\"color: #1a2744; margin: 0 0 10px 0;\">CNC Machine Tools<\/h3>\n<p style=\"color: #374151; line-height: 1.75; margin: 0;\">Large-format CNC routers, plasma cutters, and gantry milling centres rely on a <strong>rack and pinion gear<\/strong> drive for their primary X and Y axes. The EP-S45C provides the combination of long-travel capability, bidirectional repeatability, and structural rigidity that linear ball-screw drives cannot economically match beyond a few metres of travel.<\/p>\n<\/div>\n<div style=\"background: #fff7ed; border-radius: 8px; padding: 22px 18px; flex: 1 1 200px; box-sizing: border-box;\">\n<div style=\"background: #e8a020; color: #fff; width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin-bottom: 14px; font-weight: bold;\">2<\/div>\n<h3 style=\"color: #1a2744; margin: 0 0 10px 0;\">Industrial Robots &amp; Gantries<\/h3>\n<p style=\"color: #374151; line-height: 1.75; margin: 0;\">Portal robots and overhead gantry pick-and-place systems in automotive and electronics manufacturing deploy this <strong>linear gear rack<\/strong> to achieve metre-per-second traverse speeds while maintaining sub-millimetre positioning accuracy. The helical profile&#8217;s smooth torque transfer eliminates jerk that would otherwise disturb delicate end-effectors.<\/p>\n<\/div>\n<div style=\"background: #f0fdf4; border-radius: 8px; padding: 22px 18px; flex: 1 1 200px; box-sizing: border-box;\">\n<div style=\"background: #16a34a; color: #fff; width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin-bottom: 14px; font-weight: bold;\">3<\/div>\n<h3 style=\"color: #1a2744; margin: 0 0 10px 0;\">Rack and Pinion Press<\/h3>\n<p style=\"color: #374151; line-height: 1.75; margin: 0;\">Benchtop and floor-standing <strong>rack and pinion press<\/strong> designs use a gear rack to convert handle rotation into controlled downward thrust. The S45C material is hard enough to withstand the Hertzian contact stress at the tooth root during full-load pressing strokes, while the tempered core remains tough enough to absorb the end-of-stroke impact without cracking.<\/p>\n<\/div>\n<div style=\"background: #faf5ff; border-radius: 8px; padding: 22px 18px; flex: 1 1 200px; box-sizing: border-box;\">\n<div style=\"background: #7c3aed; color: #fff; width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin-bottom: 14px; font-weight: bold;\">4<\/div>\n<h3 style=\"color: #1a2744; margin: 0 0 10px 0;\">Automated Storage &amp; Retrieval<\/h3>\n<p style=\"color: #374151; line-height: 1.75; margin: 0;\">High-bay warehouse cranes and stacker-retriever systems use a <strong>gearbox rack and pinion<\/strong> drive for vertical and horizontal travel. Long rack assemblies \u2014 formed by precision end-butting of 1,000 mm bars \u2014 allow continuous travel across tens of metres without speed-reducing mechanical joints.<\/p>\n<\/div>\n<div style=\"background: #fff1f2; border-radius: 8px; padding: 22px 18px; flex: 1 1 200px; box-sizing: border-box;\">\n<div style=\"background: #dc2626; color: #fff; width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin-bottom: 14px; font-weight: bold;\">5<\/div>\n<h3 style=\"color: #1a2744; margin: 0 0 10px 0;\">Stage &amp; Broadcast Equipment<\/h3>\n<p style=\"color: #374151; line-height: 1.75; margin: 0;\">Broadcast camera pedestals, studio lighting rigs, and theatrical stage lifts rely on the quiet operation of a helical <strong>rack tooth<\/strong> profile. Where servo-driven axes must track subjects smoothly and silently, the EP-S45C&#8217;s low transmission error makes it the go-to solution for broadcast-quality motion control equipment.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<p><!-- CTA Banner --><\/p>\n<div style=\"background: linear-gradient(135deg, #1a2744 0%, #2563eb 100%); padding: 36px 24px; text-align: center; width: 100%; max-width: 100%; min-width: 100%; box-sizing: border-box;\">\n<h2 style=\"color: #ffffff; margin: 0 0 14px 0;\">Ready to Source Your Gear Rack?<\/h2>\n<p style=\"color: #b8d4f0; margin: 0 0 24px 0; line-height: 1.7;\">Browse the complete series \u2014 modules M1.5 through M12, standard and hole-free configurations.<\/p>\n<\/div>\n<p><!-- Related Products --><\/p>\n<div style=\"background: #f7f9fc; padding: 40px 24px; width: 100%; max-width: 100%; min-width: 100%; box-sizing: border-box;\">\n<h2 style=\"color: #1a2744; margin: 0 0 28px 0; border-left: 4px solid #2563eb; padding-left: 14px;\">\uad00\ub828 \uc0c1\ud488<\/h2>\n<div style=\"display: flex; flex-wrap: wrap; gap: 20px; width: 100%; max-width: 100%; min-width: 100%; box-sizing: border-box;\">\n<div style=\"background: #ffffff; border-radius: 8px; padding: 28px 22px; flex: 1 1 280px; box-sizing: border-box; border-top: 4px solid #2563eb;\">\n<h3 style=\"color: #1a2744; margin: 0 0 14px 0;\">Helical Gear<\/h3>\n<p style=\"color: #374151; line-height: 1.75; margin: 0 0 16px 0;\">Pair the EP-S45C with a precision-matched <a style=\"color: #2563eb; text-decoration: underline;\" href=\"https:\/\/miter-gear.com\/helical-gear\/\" target=\"_blank\" rel=\"noopener\">Helical Gear<\/a> pinion to complete a low-noise, high-load drive system. Our full helical gear range covers modules from M1 to M12 in multiple bore and key configurations, ensuring system compatibility and one-stop sourcing for linear axes. The matched helix angle guarantees correct axial thrust orientation and smooth, vibration-free mesh throughout the service life.<\/p>\n<div style=\"margin-top: 16px;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto; border-radius: 4px;\" src=\"https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-product-helical-gear.webp\" alt=\"helical gear pinion compatible with gear rack\" title=\"\"><\/div>\n<\/div>\n<div style=\"background: #ffffff; border-radius: 8px; padding: 28px 22px; flex: 1 1 280px; box-sizing: border-box; border-top: 4px solid #e8a020;\">\n<h3 style=\"color: #1a2744; margin: 0 0 14px 0;\">\ud50c\ub77c\uc2a4\ud2f1 \uae30\uc5b4 \ub799<\/h3>\n<p style=\"color: #374151; line-height: 1.75; margin: 0 0 16px 0;\">For applications where weight saving, corrosion immunity, or reduced noise at light loads are priorities, our <a style=\"color: #2563eb; text-decoration: underline;\" href=\"https:\/\/superiortransmissioninc.com\/ko\/plastic-gear-rack\/\">plastic gear rack<\/a> series offers a reliable alternative. Available in POM and nylon formulations, these racks are dimensionally interchangeable with our steel series for quick substitution during prototyping. They can also operate without lubrication in food-processing, cleanroom, or medical-equipment environments where oil contamination is unacceptable.<\/p>\n<div style=\"margin-top: 16px;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto; border-radius: 4px;\" src=\"https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/09\/superiortransmissioninc-related-product-plastic-gear-rack.webp\" alt=\"plastic gear rack alternative\" title=\"\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><!-- About Us --><\/p>\n<div style=\"background: #1a2744; padding: 40px 24px; width: 100%; max-width: 100%; min-width: 100%; box-sizing: border-box;\">\n<h2 style=\"color: #ffffff; margin: 0 0 20px 0; border-left: 4px solid #e8a020; padding-left: 14px;\">About Our Factory<\/h2>\n<p style=\"color: #b8d4f0; line-height: 1.8; margin: 0 0 18px 0;\">With over a decade of hands-on experience in mechanical power transmission manufacturing, our team has spent more than ten years engineering and producing drive components that hold up in the world&#8217;s most demanding industrial environments. Our ISO 9001:2015 certified facility produces a comprehensive range of mechanical products: agricultural gearboxes, worm gear reducers, planetary gear drives, power take-off shafts, hydraulic cylinders, gears, sprockets, worm gears, pulleys, shafts, and both standard and custom mechanical assemblies.<\/p>\n<p style=\"color: #b8d4f0; line-height: 1.8; margin: 0 0 18px 0;\">Every product \u2014 from a <strong>small gear rack<\/strong> for a benchtop instrument to a large-module <strong>custom gear rack<\/strong> for an industrial portal crane \u2014 passes through the same quality-controlled process flow. Castings are sourced in ductile iron, grey cast iron, cast steel, precision investment-cast steel, and cast aluminium depending on application requirements. Our in-house machining centre capabilities cover turning, milling, grinding, hobbing, and heat treatment, which is how we maintain short lead times without compromising the dimensional tolerances our customers specify.<\/p>\n<h3 style=\"color: #ffffff; margin: 28px 0 18px 0;\">\uc791\uc5c5\uc7a5<\/h3>\n<p><!-- Workshop images with horizontal scroll --><\/p>\n<div style=\"overflow-x: auto; -webkit-overflow-scrolling: touch; width: 100%; max-width: 100%; min-width: 100%;\">\n<div style=\"display: flex; gap: 12px; min-width: max-content;\"><img decoding=\"async\" style=\"width: 220px; height: 160px; object-fit: cover; border-radius: 6px; flex-shrink: 0;\" src=\"https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/07\/superiortransmissioninc-factory-Workshop.webp\" alt=\"gear rack factory workshop\" title=\"\"><br \/>\n<img decoding=\"async\" style=\"width: 220px; height: 160px; object-fit: cover; border-radius: 6px; flex-shrink: 0;\" src=\"https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/07\/superiortransmissioninc-factory-Drilling-and-Milling-Composite-Machining-Center.webp\" alt=\"drilling and milling composite machining center\" title=\"\"><br \/>\n<img decoding=\"async\" style=\"width: 220px; height: 160px; object-fit: cover; border-radius: 6px; flex-shrink: 0;\" src=\"https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/07\/superiortransmissioninc-factory-Rolling-Machining-of-Cylinder-Bore.webp\" alt=\"rolling machining cylinder bore\" title=\"\"><br \/>\n<img decoding=\"async\" style=\"width: 220px; height: 160px; object-fit: cover; border-radius: 6px; flex-shrink: 0;\" src=\"https:\/\/superiortransmissioninc.com\/wp-content\/uploads\/2026\/07\/superiortransmissioninc-factory-gearbox.webp\" alt=\"gearbox manufacturing floor\" title=\"\"><\/div>\n<\/div>\n<\/div>\n<p><!-- FAQ --><\/p>\n<div style=\"background: #f7f9fc; padding: 40px 24px; width: 100%; max-width: 100%; min-width: 100%; box-sizing: border-box;\">\n<h2 style=\"color: #1a2744; margin: 0 0 28px 0; border-left: 4px solid #2563eb; padding-left: 14px;\">\uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38<\/h2>\n<details style=\"background: #ffffff; border-radius: 6px; margin-bottom: 12px; border: 1px solid #e2e8f0; overflow: hidden;\">\n<summary style=\"padding: 18px 20px; cursor: pointer; font-weight: 600; color: #1a2744; list-style: none; display: flex; justify-content: space-between; align-items: center;\">Which module size of helical gear rack should I choose for a CNC gantry router needing a travel speed of 20 m\/min?<\/summary>\n<div style=\"padding: 0 20px 18px 20px; color: #374151; line-height: 1.8;\">For a CNC gantry router targeting 20 m\/min rapid traverse, a Module 4 or Module 5 <strong>helical rack and pinion<\/strong> pair is typically the right starting point. The module governs tooth size and therefore the tangential load capacity per unit face width. At that speed, pinion tooth frequency (RPM \u00d7 teeth) must stay within the servo&#8217;s bandwidth. A 20-tooth pinion on M4 rack gives a 1,000 mm\/rev advance, meaning a servo at 1,200 RPM covers 20 m\/min \u2014 well within standard servo capability. Always verify the Fp (total pitch error) value in the specification table against your positioning-accuracy budget.<\/div>\n<\/details>\n<details style=\"background: #ffffff; border-radius: 6px; margin-bottom: 12px; border: 1px solid #e2e8f0; overflow: hidden;\">\n<summary style=\"padding: 18px 20px; cursor: pointer; font-weight: 600; color: #1a2744; list-style: none; display: flex; justify-content: space-between; align-items: center;\">What is the difference between a helical gear rack and a straight gear rack for heavy industrial automation in Europe?<\/summary>\n<div style=\"padding: 0 20px 18px 20px; color: #374151; line-height: 1.8;\">The fundamental mechanical distinction is how the tooth load builds up during mesh. A <strong>straight gear rack<\/strong> (spur type) engages the full tooth width instantaneously, creating a sharp impulse force at every pitch point. A helical <strong>gear rack<\/strong> spreads that same load across an oblique contact line that sweeps progressively through the engagement zone. In practical terms for European industrial automation: the helical variant delivers higher permissible tangential forces per module, lower acoustic emission (typically 3\u20138 dB quieter), and smoother torque ripple. The trade-off is an axial thrust component that the bearing arrangement must absorb.<\/div>\n<\/details>\n<details style=\"background: #ffffff; border-radius: 6px; margin-bottom: 12px; border: 1px solid #e2e8f0; overflow: hidden;\">\n<summary style=\"padding: 18px 20px; cursor: pointer; font-weight: 600; color: #1a2744; list-style: none; display: flex; justify-content: space-between; align-items: center;\">How do I calculate the gear ratio of rack and pinion for a linear positioning stage in precision manufacturing?<\/summary>\n<div style=\"padding: 0 20px 18px 20px; color: #374151; line-height: 1.8;\">\uadf8\ub9cc\ud07c <strong>gear ratio of rack and pinion<\/strong> is not a fixed number like a conventional gear pair \u2014 instead, it expresses the relationship between pinion rotation (degrees or revolutions) and linear rack travel. The formula is: Linear Travel per Revolution = Module \u00d7 \u03c0 \u00d7 Number of Pinion Teeth (for a spur rack). For a helical rack, the circular pitch in the normal plane differs from the transverse plane pitch (Pt = Module \u00d7 \u03c0 \/ COS(helix angle)), so you use the transverse pitch from the specification table directly. Multiply the pinion tooth count by Pt to get travel per revolution. Divide your target feed rate by this figure to determine the required shaft RPM.<\/div>\n<\/details>\n<details style=\"background: #ffffff; border-radius: 6px; margin-bottom: 12px; border: 1px solid #e2e8f0; overflow: hidden;\">\n<summary style=\"padding: 18px 20px; cursor: pointer; font-weight: 600; color: #1a2744; list-style: none; display: flex; justify-content: space-between; align-items: center;\">Where do rack and pinion drives perform best compared to ball screws in automated warehouse systems in North America?<\/summary>\n<div style=\"padding: 0 20px 18px 20px; color: #374151; line-height: 1.8;\">\uc5d0\uc774 <strong>gear rack and pinion<\/strong> drive outperforms ball screws whenever the travel axis exceeds roughly 2\u20133 metres, the required speed is above 1 m\/s, or the moving mass is high. Ball screws become costly and prone to critical speed resonance at long lengths. In automated storage and retrieval systems across North American distribution centres, long-travel stacker cranes and shuttle vehicles routinely use the <strong>rack pinion gear<\/strong> drive for horizontal and mast-climbing axes. The <strong>linear rack and pinion<\/strong> arrangement also supports modular track extensions easily \u2014 simply butt-joint additional rack bars \u2014 whereas a ball screw installation is fixed in length after assembly.<\/div>\n<\/details>\n<details style=\"background: #ffffff; border-radius: 6px; margin-bottom: 12px; border: 1px solid #e2e8f0; overflow: hidden;\">\n<summary style=\"padding: 18px 20px; cursor: pointer; font-weight: 600; color: #1a2744; list-style: none; display: flex; justify-content: space-between; align-items: center;\">What are the main disadvantages of using a gear rack in outdoor construction equipment exposed to dust and moisture in Southeast Asia?<\/summary>\n<div style=\"padding: 0 20px 18px 20px; color: #374151; line-height: 1.8;\">The primary challenges for an open <strong>gear rack<\/strong> in dusty or humid outdoor environments are lubrication retention and contamination ingestion. Unlike a ball screw with sealed housing, a rack-and-pinion drive exposes the tooth flanks to the surrounding environment. Coarse particulate matter abrades the tooth surface and accelerates pitch-error accumulation. Practical mitigations include grease-lubricating the rack at scheduled intervals, specifying a protective bellows cover or rack guard where geometry permits, choosing a higher module (larger teeth tolerate surface wear better), and selecting a corrosion-inhibiting grease rated for high temperature and moisture. For particularly aggressive environments, surface coatings or stainless-steel alloys can be specified as <strong>custom gear rack<\/strong> options.<\/div>\n<\/details>\n<\/div>\n<p style=\"text-align: right;\">\ud3b8\uc9d1\uc790: PXY<\/p>","protected":false},"excerpt":{"rendered":"<p>The EP-S45C Helical Gear Rack is a high-precision linear transmission component manufactured from S45C steel and processed via quenching and tempering to achieve a hardness of HB20\u201325\u00b0. Featuring a 19\u00b031&#8217;42&#8221; right-hand helix angle, this rack ensures smooth engagement and reduced noise compared to spur gears. Produced with four-side flat grinding and fine cutting, it meets DIN8 (International Grade 7) accuracy standards. Available in modules ranging from M1.5 to M12 with standard lengths of 500mm to 1000mm, it offers versatile mounting options with pre-drilled holes or solid backs (suffix &#8220;N&#8221;). Ideal for CNC machinery, automation systems, and heavy-duty industrial applications requiring durable, precise linear motion.<\/p>","protected":false},"featured_media":1481,"template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[55],"product_tag":[],"class_list":["post-1478","product","type-product","status-publish","has-post-thumbnail","product_cat-helical-gear-rack","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/superiortransmissioninc.com\/ko\/wp-json\/wp\/v2\/product\/1478","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/superiortransmissioninc.com\/ko\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/superiortransmissioninc.com\/ko\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/superiortransmissioninc.com\/ko\/wp-json\/wp\/v2\/media\/1481"}],"wp:attachment":[{"href":"https:\/\/superiortransmissioninc.com\/ko\/wp-json\/wp\/v2\/media?parent=1478"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/superiortransmissioninc.com\/ko\/wp-json\/wp\/v2\/product_brand?post=1478"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/superiortransmissioninc.com\/ko\/wp-json\/wp\/v2\/product_cat?post=1478"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/superiortransmissioninc.com\/ko\/wp-json\/wp\/v2\/product_tag?post=1478"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}