{"id":866,"date":"2026-08-11T05:17:24","date_gmt":"2026-08-11T05:17:24","guid":{"rendered":"https:\/\/superiortransmissioninc.com\/?post_type=product&p=866"},"modified":"2026-08-11T05:17:24","modified_gmt":"2026-08-11T05:17:24","slug":"ep-4-to-376-kg-wpwds-a-universal-speed-reducer","status":"publish","type":"product","link":"https:\/\/superiortransmissioninc.com\/pt\/produto\/ep-4-to-376-kg-wpwds-a-universal-speed-reducer\/","title":{"rendered":"EP-4 to 376 kg WPWDS-A Universal Speed Reducer"},"content":{"rendered":"
\n

EP-WPWDS-A Universal Speed Reducer \u2014 4 to 376 kg Series<\/h2>\n

O EP-WPWDS-A universal speed reducer<\/strong> is a heavy-duty, flange-mounted worm gear speed reducer engineered for consistent torque transmission across a wide spectrum of industrial applications. Available in frame sizes from 40 to 250, with weight ratings spanning 4 kg to 395 kg, this universal speed reducer delivers the kind of reliable, low-noise performance that continuous-duty operations demand. Whether you are outfitting a conveyor system in a warehouse, driving a mixing unit in a processing plant, or powering hoisting equipment on a construction site, the WPWDS-A series offers the mechanical precision and long service life your equipment deserves.<\/p>\n

Built around proven worm-and-wheel geometry, the EP-WPWDS-A universal speed worm reducer achieves reduction ratios from 1\/5 through 1\/60, making it one of the most versatile worm drive speed reducers available for both OEM integration and field replacement. Every unit ships fully assembled, oil-filled, and ready to mount \u2014 keeping your commissioning time short and your uptime high.<\/p>\n<\/div>\n

<\/p>\n

<\/div>\n
\n

Technical Specifications \u2014 WPWDS-A Series\u00a0Universal Speed Reducer<\/h2>\n

The table below covers the complete dimensional and rating data for each frame size in the EP-WPWDS-A universal speed reducer family. All linear dimensions are given in millimetres (mm); weight in kilograms (kg). Input power ratings apply at the specified reduction ratio at 1400 rpm input speed with a service factor of 1.0. For applications with shock loading or duty cycles exceeding 10 hours per day, please apply the appropriate service factor and select the next larger frame size accordingly.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Tamanho<\/th>\nInput (kW)<\/th>\nRaz\u00e3o<\/th>\nUM<\/th>\nAB<\/th>\nBB<\/th>\nAC<\/th>\nBC<\/th>\nH<\/th>\nHL<\/th>\nLL<\/th>\nOutput<\/p>\n

Shaft<\/p>\n

W\u00d7Y<\/th>\n

Input<\/p>\n

Hole<\/p>\n

T\u00d7V<\/th>\n

Flange<\/p>\n

Bolt<\/th>\n

LS<\/th>\nS<\/th>\nWeight<\/p>\n

(kg)<\/th>\n<\/tr>\n<\/thead>\n

40<\/td>\n0.12<\/td>\n1\/5\u20131\/60<\/td>\n135<\/td>\n75<\/td>\n74<\/td>\n95<\/td>\n61<\/td>\n60<\/td>\n45<\/td>\n135<\/td>\n28\u00d714<\/td>\n4\u00d712.8<\/td>\nM8<\/td>\n31<\/td>\n11<\/td>\n5<\/td>\n<\/tr>\n
50<\/td>\n0.18<\/td>\n1\/5\u20131\/60<\/td>\n151<\/td>\n83<\/td>\n97<\/td>\n111<\/td>\n68<\/td>\n80<\/td>\n50<\/td>\n165<\/td>\n40\u00d717<\/td>\n4\u00d712.8<\/td>\nM8<\/td>\n31<\/td>\n11<\/td>\n8<\/td>\n<\/tr>\n
60<\/td>\n0.37<\/td>\n1\/5<\/td>\n167<\/td>\n91<\/td>\n112<\/td>\n127<\/td>\n76<\/td>\n93<\/td>\n60<\/td>\n195<\/td>\n50\u00d722<\/td>\n5\u00d716.3<\/td>\nM8<\/td>\n33<\/td>\n14<\/td>\n12.5<\/td>\n<\/tr>\n
70<\/td>\n0.37 \/ 0.75<\/td>\n1\/10<\/td>\n200<\/td>\n109<\/td>\n131<\/td>\n152<\/td>\n86<\/td>\n108<\/td>\n73<\/td>\n233<\/td>\n60\u00d728<\/td>\n5\u00d716.3<\/td>\nM8<\/td>\n40<\/td>\n14<\/td>\n17<\/td>\n<\/tr>\n
80<\/td>\n0.75 \/ 1.5<\/td>\n1\/15\u20131\/20<\/td>\n225<\/td>\n125<\/td>\n142<\/td>\n169<\/td>\n102<\/td>\n123<\/td>\n83<\/td>\n268<\/td>\n65\u00d732<\/td>\n6\u00d721.8<\/td>\nM10<\/td>\n48<\/td>\n19<\/td>\n26<\/td>\n<\/tr>\n
100<\/td>\n1.5<\/td>\n1\/25<\/td>\n280<\/td>\n148<\/td>\n169<\/td>\n216<\/td>\n117<\/td>\n150<\/td>\n100<\/td>\n330<\/td>\n75\u00d738<\/td>\n8\u00d727.3<\/td>\nM10<\/td>\n52<\/td>\n24<\/td>\n41.5<\/td>\n<\/tr>\n
120<\/td>\n2.2 \/ 3.0<\/td>\n1\/30<\/td>\n333<\/td>\n181<\/td>\n190<\/td>\n256<\/td>\n124<\/td>\n180<\/td>\n120<\/td>\n395<\/td>\n85\u00d745<\/td>\n8\u00d731.3<\/td>\nM12<\/td>\n63<\/td>\n28<\/td>\n60<\/td>\n<\/tr>\n
135<\/td>\n3.0 \/ 4.0<\/td>\n1\/40<\/td>\n375<\/td>\n202<\/td>\n210<\/td>\n296<\/td>\n147<\/td>\n215<\/td>\n135<\/td>\n455<\/td>\n95\u00d755<\/td>\n8\u00d731.3<\/td>\nM12<\/td>\n63<\/td>\n28<\/td>\n90<\/td>\n<\/tr>\n
155<\/td>\n5.5<\/td>\n1\/50<\/td>\n448<\/td>\n247<\/td>\n252<\/td>\n345<\/td>\n185<\/td>\n235<\/td>\n155<\/td>\n493<\/td>\n110\u00d760<\/td>\n10\u00d741.3<\/td>\nM12<\/td>\n83<\/td>\n38<\/td>\n118<\/td>\n<\/tr>\n
175<\/td>\n5.5 \/ 7.5<\/td>\n1\/60<\/td>\n481<\/td>\n262<\/td>\n255<\/td>\n374<\/td>\n192<\/td>\n260<\/td>\n175<\/td>\n558<\/td>\n110\u00d765<\/td>\n10\u00d741.3<\/td>\nM12<\/td>\n83<\/td>\n38<\/td>\n167<\/td>\n<\/tr>\n
200<\/td>\n11.0<\/td>\n1\/40\u20131\/60<\/td>\n543<\/td>\n285<\/td>\n319<\/td>\n412<\/td>\n230<\/td>\n290<\/td>\n200<\/td>\n620<\/td>\n125\u00d770<\/td>\n12\u00d745.3<\/td>\nM16<\/td>\n114<\/td>\n42<\/td>\n237<\/td>\n<\/tr>\n
250<\/td>\n11.0 \/ 15.0<\/td>\n1\/50\u20131\/60<\/td>\n615<\/td>\n330<\/td>\n385<\/td>\n500<\/td>\n285<\/td>\n350<\/td>\n250<\/td>\n750<\/td>\n155\u00d790<\/td>\n12\u00d745.3<\/td>\nM16<\/td>\n114<\/td>\n42<\/td>\n395<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

All dimensions in mm. Weight in kg. Scroll horizontally on mobile to view all columns.<\/p>\n<\/div>\n

\"superiortransmissioninc-products-EP-4<\/p>\n

\n

Five Key Advantages of the EP-WPWDS-A Universal Speed Reducer<\/h2>\n
\n
\n
\u2460 Wide Ratio Coverage<\/div>\n

Reduction ratios of 1\/5, 1\/10, 1\/15, 1\/20, 1\/25, 1\/30, 1\/40, 1\/50, and 1\/60 are available within a single product family. That range means you can select the exact output speed your process requires without resorting to external chain stages or supplementary gearboxes \u2014 a genuine advantage when space is at a premium or when system complexity must be minimized.<\/p>\n<\/div>\n

\n
\u2461 Self-Locking Capability<\/div>\n

At higher reduction ratios the worm-and-wheel geometry becomes inherently self-locking, preventing back-drive under load. This characteristic eliminates the need for separate mechanical braking devices on vertical lifts, inclined conveyors, and positioning tables \u2014 reducing component count, purchase cost, and routine maintenance intervals without sacrificing safety or holding precision.<\/p>\n<\/div>\n

\n
\u2462 Compact Flange-Mount Design<\/div>\n

The WPWDS-A universal speed reducer configuration integrates a motor-mounting flange directly onto the gearbox housing. Pairing the reducer with a matching electric motor creates a clean, co-axial drive module that bolts straight onto your machine frame. The foot-and-flange combination accommodates multiple mounting orientations, enabling flexible installation even in retrofit scenarios where access is restricted.<\/p>\n<\/div>\n

\n
\u2463 Robust Heavy-Duty Construction<\/div>\n

Frame sizes 40 through 250 cover an output weight capacity from 4 kg to 395 kg, making the EP-WPWDS-A series universal speed reducer genuinely useful across both light packaging lines and large heavy-duty worm drive gearbox applications. The cast iron housing resists vibration-induced cracking, damps operational noise effectively, and provides the dimensional stability required to maintain precise gear mesh geometry throughout years of continuous service.<\/p>\n<\/div>\n

\n
\u2464 Multiple Shaft Direction Options<\/div>\n

Six shaft direction configurations \u2014 designated A through F \u2014 are available as standard options. Whether your driven machine requires an input and output on the same axis, a right-angle arrangement, or a double-output layout, the EP-WPWDS-A universal speed worm gear reducer can be specified to match without custom engineering work. This flexibility reduces lead times and simplifies inventory management for multi-machine production facilities.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

How Does a Worm Gear Reducer Work?<\/h2>\n

At its core, a worm gear speed reducer translates high-speed rotational input into low-speed, high-torque output through the meshing of a helical worm shaft against a bronze or brass worm wheel. The worm \u2014 driven by the motor \u2014 wraps around the wheel at a precise lead angle. Because each revolution of the worm advances the wheel by only one or a few teeth, large speed reductions are achieved in a physically compact stage. The worm gear reduction ratio is determined by dividing the number of teeth on the wheel by the number of starts (thread leads) on the worm.<\/p>\n

Do worm gears reduce speed? Absolutely \u2014 and that is their primary purpose. The 90-degree shaft angle between worm and wheel also means the assembly fits neatly into corner-drive arrangements that would otherwise require bevel gearing. In the EP-WPWDS-A universal speed reducer design, input enters through the hardened worm shaft, energy transfers via the sliding-contact mesh, and the output shaft delivers smooth, vibration-dampened torque to your driven equipment.<\/p>\n

The purpose of the gear reducer in any drive train is straightforward: match the high-speed, low-torque output of a standard motor to the low-speed, high-torque requirement of the actual process load. A correctly sized worm drive reducer eliminates the need for oversized motors, reduces mechanical stress on downstream components, and extends the service life of the entire drivetrain.<\/p>\n<\/div>\n

<\/p>\n

\"WPWDS-A<\/div>\n

<\/p>\n

\n

Universal Speed Reducer Materials & Build Quality<\/h2>\n

The EP-WPWDS-A universal speed reducer is constructed from carefully selected materials chosen to maximise both strength and longevity under industrial operating conditions. The main housing is cast from high-grade cast iron (HT200 or equivalent), which combines excellent compressive strength with inherent vibration absorption \u2014 critical for maintaining quiet, stable operation across shift-long duty cycles.<\/p>\n

The worm shaft is precision-machined from 20CrMnTi alloy steel, carburized and quenched to surface hardness of HRC 58\u201362. This treatment creates a hard, wear-resistant contact surface while preserving a tough, impact-absorbing core \u2014 preventing sudden brittle fracture even under momentary overload. The worm wheel is cast from high-phosphorus bronze (ZCuSn10Pb1 or similar), a material known for its excellent compatibility with steel in sliding contact, resulting in lower friction coefficients, reduced heat generation, and a much longer mesh service life than ferrous wheel materials.<\/p>\n

Input and output shafts are supported on double-row or paired angular-contact rolling bearings, pre-loaded and sealed to keep lubricant in and contaminants out. Oil seals at every shaft penetration meet IP55 ingress protection as standard, with IP65 available on request for washdown or outdoor environments. Synthetic gear oil (ISO VG 220 or 460) is supplied pre-filled; the sealed-for-life option eliminates scheduled oil changes entirely.<\/p>\n<\/div>\n

\"EP-WPWDS-A<\/p>\n

<\/p>\n

<\/p>\n

\n

Universal Speed Reducer Application Scenarios<\/h2>\n

The EP-WPWDS-A universal speed reducer is a genuinely adaptable solution. Its combination of wide ratio selection, compact envelope, and robust build makes it suitable for a remarkable variety of industrial sectors globally \u2014 from food and beverage processing lines in Europe and North America to agricultural equipment manufacturing across Southeast Asia and South America. Below are the primary application categories where this large universal speed reducer or replacement universal speed reducer consistently delivers measurable value.<\/p>\n

\n
\n

Conveyor & Material Handling<\/strong><\/p>\n

Belt conveyors, slat conveyors, roller tables, and chain-driven transfer systems all benefit from the smooth, regulated output speed this worm speed reducer gear box provides. The self-braking property at higher ratios eliminates runback on inclined sections, reducing the need for ancillary holding brakes and lowering overall system cost.<\/p>\n<\/div>\n

\n

Packaging Machinery<\/strong><\/p>\n

Filling machines, capping heads, label applicators, and cartoning lines demand precise, repeatable speed control. The new universal speed reducer WPWDS-A series delivers consistent output shaft speed regardless of minor load fluctuations, making it a preferred worm reducer gear box choice for OEMs supplying the global packaging sector.<\/p>\n<\/div>\n

\n

Agricultural Equipment<\/strong><\/p>\n

Grain augers, seed drills, feed mixers, and irrigation drive heads often operate in dusty, vibration-intensive environments. The sealed, powder-coated housing of the EP-WPWDS-A withstands these conditions reliably. This makes it a well-regarded electrical motors universal speed worm reducer pairing option for agricultural OEMs targeting markets across Australia, Brazil, and the Netherlands.<\/p>\n<\/div>\n

\n

Hoisting & Lifting<\/strong><\/p>\n

Small and medium hoists, winches, and scissor lifts frequently specify high torque worm gearbox configurations at 1\/40 to 1\/60 ratios. The inherent load-holding characteristic means the load stays in position without power \u2014 a fundamental safety requirement that architects and compliance engineers across the UK and Canada specify as standard.<\/p>\n<\/div>\n

\n

Mixing & Agitation<\/strong><\/p>\n

Paddle mixers, ribbon blenders, and tank agitators in chemical, food, and pharmaceutical plants need steady, low-speed torque over extended duty cycles. The EP-WPWDS-A worm gear reducer motor pairing sustains continuous full-load output without thermal shutdown, provided the operating environment remains within the unit’s rated ambient temperature range.<\/p>\n<\/div>\n

\n

Gate & Valve Actuation<\/strong><\/p>\n

Water treatment plants, irrigation infrastructure, and pipeline control stations use worm drive reducer assemblies to operate large gate valves and sluice gates manually or via motor drive. The compact size universal speed reducer configuration fits neatly within existing valve actuator housings, simplifying retrofit and replacement universal speed worm reducer projects globally.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

Worm Gear Reducer Installation Guidelines<\/h2>\n

Correct worm gear reducer installation is critical to achieving rated service life and maintaining the manufacturer’s performance guarantees. The following steps reflect standard mechanical best practice and apply to all frame sizes in the WPWDS-A series.<\/p>\n