{"id":870,"date":"2026-08-11T05:33:26","date_gmt":"2026-08-11T05:33:26","guid":{"rendered":"https:\/\/superiortransmissioninc.com\/?post_type=product&p=870"},"modified":"2026-08-11T05:33:26","modified_gmt":"2026-08-11T05:33:26","slug":"ep-5-374-kg-wpwko-universal-speed-reducer","status":"publish","type":"product","link":"https:\/\/superiortransmissioninc.com\/ur\/product\/ep-5-374-kg-wpwko-universal-speed-reducer\/","title":{"rendered":"EP-5\u2013374 kg WPWKO Universal Speed Reducer"},"content":{"rendered":"
\n

Universal Speed Worm Reducer Series<\/p>\n

EP-WPWKO Universal Speed Reducer
\n5\u2013374 kg | Hollow Output Shaft Worm Drive<\/span><\/h2>\n

The EP-WPWKO is a hollow-output-shaft universal speed reducer<\/strong> engineered for direct shaft-mount applications where conventional solid-shaft couplings are impractical or add unnecessary length to the drive train. Available from size 40 through 250 \u2014 covering unit weights of 5 kg to 374 kg and reduction ratios from 1\/5 to 1\/60 \u2014 this worm gear speed reducer delivers reliable right-angle torque conversion with a footprint-optimised hollow bore output that simplifies installation across a wide range of industrial and agricultural machinery.<\/p>\n<\/div>\n

 <\/p>\n

Technical Specifications \u2014 EP-WPWKO Series Universal Speed Reducer<\/h2>\n

All external dimensions in mm. Unit weight values are approximate net figures. Output shaft bore W\u00d7Y denotes bore diameter \u00d7 keyway depth.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u0633\u0627\u0626\u0632<\/th>\n\u062a\u0646\u0627\u0633\u0628<\/th>\n\u0627\u06d2<\/th>\n\u0627\u06d2 \u0628\u06cc<\/th>\n\u0628\u06cc<\/th>\nBC<\/th>\n\u0633\u06cc \u0633\u06cc<\/th>\n\u0627\u06cc\u0645<\/th>\n\u0646<\/th>\n\u0627\u06cc<\/th>\n\u062c\u06cc<\/th>\nZ<\/th>\nInput HS<\/th>\nT\u00d7V<\/th>\nOutput S<\/th>\nW\u00d7Y<\/th>\nWt (\u06a9\u0644\u0648\u06af\u0631\u0627\u0645)<\/th>\n<\/tr>\n<\/thead>\n
40<\/td>\n1\/5<\/td>\n143<\/td>\n87<\/td>\n85<\/td>\n45<\/td>\n40<\/td>\n95<\/td>\n187<\/td>\n70<\/td>\n12<\/td>\n10<\/td>\n25<\/td>\n4\u00d72.5<\/td>\n16<\/td>\n6\u00d718.8<\/td>\n5<\/td>\n<\/tr>\n
50<\/td>\n1\/5\u20131\/10<\/td>\n175<\/td>\n108<\/td>\n105<\/td>\n50<\/td>\n50<\/td>\n111<\/td>\n226<\/td>\n90<\/td>\n14<\/td>\n12<\/td>\n30<\/td>\n4\u00d72.5<\/td>\n20<\/td>\n6\u00d722.8<\/td>\n8<\/td>\n<\/tr>\n
60<\/td>\n1\/5\u20131\/15<\/td>\n198<\/td>\n120<\/td>\n110<\/td>\n55<\/td>\n60<\/td>\n127<\/td>\n257<\/td>\n100<\/td>\n15<\/td>\n12<\/td>\n40<\/td>\n5\u00d73<\/td>\n25<\/td>\n8\u00d728.3<\/td>\n11<\/td>\n<\/tr>\n
70<\/td>\n1\/5\u20131\/20<\/td>\n231<\/td>\n140<\/td>\n130<\/td>\n65<\/td>\n70<\/td>\n152<\/td>\n305<\/td>\n120<\/td>\n20<\/td>\n15<\/td>\n40<\/td>\n5\u00d73<\/td>\n30<\/td>\n8\u00d733.3<\/td>\n15.5<\/td>\n<\/tr>\n
80<\/td>\n1\/5\u20131\/20<\/td>\n261<\/td>\n160<\/td>\n150<\/td>\n70<\/td>\n80<\/td>\n174<\/td>\n350<\/td>\n140<\/td>\n20<\/td>\n15<\/td>\n50<\/td>\n7\u00d74<\/td>\n35<\/td>\n10\u00d738.3<\/td>\n24<\/td>\n<\/tr>\n
100<\/td>\n1\/25<\/td>\n322<\/td>\n190<\/td>\n160<\/td>\n90<\/td>\n100<\/td>\n224<\/td>\n410<\/td>\n190<\/td>\n22<\/td>\n15<\/td>\n50<\/td>\n7\u00d74<\/td>\n40<\/td>\n12\u00d743.3<\/td>\n38<\/td>\n<\/tr>\n
120<\/td>\n1\/30<\/td>\n371<\/td>\n219<\/td>\n175<\/td>\n100<\/td>\n120<\/td>\n264<\/td>\n494<\/td>\n220<\/td>\n25<\/td>\n18<\/td>\n65<\/td>\n7\u00d74<\/td>\n45<\/td>\n14\u00d748.8<\/td>\n56<\/td>\n<\/tr>\n
135<\/td>\n1\/40<\/td>\n422<\/td>\n249<\/td>\n210<\/td>\n110<\/td>\n135<\/td>\n304<\/td>\n559<\/td>\n260<\/td>\n30<\/td>\n18<\/td>\n75<\/td>\n10\u00d74.5<\/td>\n60<\/td>\n18\u00d764.4<\/td>\n84<\/td>\n<\/tr>\n
155<\/td>\n1\/50<\/td>\n497<\/td>\n295<\/td>\n256<\/td>\n140<\/td>\n155<\/td>\n345<\/td>\n605<\/td>\n290<\/td>\n35<\/td>\n21<\/td>\n85<\/td>\n12\u00d75<\/td>\n70<\/td>\n20\u00d774.9<\/td>\n129<\/td>\n<\/tr>\n
175<\/td>\n1\/60<\/td>\n534<\/td>\n314<\/td>\n282<\/td>\n150<\/td>\n175<\/td>\n374<\/td>\n675<\/td>\n320<\/td>\n40<\/td>\n21<\/td>\n85<\/td>\n14\u00d75.5<\/td>\n80<\/td>\n22\u00d785.4<\/td>\n157<\/td>\n<\/tr>\n
200<\/td>\n1\/60<\/td>\n580<\/td>\n342<\/td>\n320<\/td>\n175<\/td>\n200<\/td>\n424<\/td>\n749<\/td>\n370<\/td>\n40<\/td>\n24<\/td>\n95<\/td>\n14\u00d75.5<\/td>\n85<\/td>\n22\u00d790.4<\/td>\n224<\/td>\n<\/tr>\n
250<\/td>\n1\/60<\/td>\n705<\/td>\n420<\/td>\n400<\/td>\n200<\/td>\n250<\/td>\n510<\/td>\n920<\/td>\n440<\/td>\n45<\/td>\n28<\/td>\n110<\/td>\n18\u00d77<\/td>\n110<\/td>\n28\u00d7116.4<\/td>\n374<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

* E\u2081 and E\u2082 sub-dimensions available on full engineering drawing. Contact us for complete dimensional packages per size.<\/p>\n

\"EP-5\u2013374<\/p>\n

\n

Advantages of the EP-WPWKO Universal Speed Reducer<\/h2>\n

What separates this hollow-bore universal speed reducer from standard solid-shaft alternatives<\/p>\n

\n
\n
\u2699<\/div>\n

Direct Shaft-Mount Hollow Bore Output<\/h3>\n

The defining feature of the WPWKO series universal speed reducer is its hollow output shaft, which allows a driven shaft to pass directly through the reducer housing. This eliminates the need for a separate coupling, keyway alignment steps, and the additional shaft stub that a solid-output worm drive speed reducer<\/strong> would require. The result is a more compact, lower-cost installation \u2014 particularly valuable in confined machine frames where drive-train length is a critical design constraint.<\/p>\n<\/div>\n

\n
\ud83d\udcc8<\/div>\n

Three Shaft Direction Configurations<\/h3>\n

The EP-WPWKO Universal Speed Reducer supports three configurable shaft direction options: A (hollow double output), B (hollow double output with top input), and C (hollow double output with dual input). This flexibility means a single product family covers multiple machine layouts without custom fabrication. Engineers specifying a new universal speed worm gear reducer<\/strong> for mixer, conveyor, or processing equipment can select the correct configuration from the standard range and install without modification.<\/p>\n<\/div>\n

\n
\ud83d\udee0<\/div>\n

High Torque at Low Output Speed<\/h3>\n

With worm gear reduction ratios spanning 1\/5 through 1\/60, the EP-WPWKO functions as a genuine high torque worm gearbox<\/strong> capable of multiplying input torque substantially at the output bore. At ratio 1\/60, the mechanical advantage is such that even a modest 5.5 kW motor input produces significant shaft torque \u2014 making this series a practical choice for slow-rotating heavy loads in chemical processing, food production, and agricultural post-processing equipment worldwide.<\/p>\n<\/div>\n

\n
\ud83c\udf1f<\/div>\n

Broad Size Range \u2014 One Supplier<\/h3>\n

The size 40 through 250 range means procurement teams across Australia, the UK, the Netherlands, Brazil, Canada, South Korea, and Colombia can source a large universal speed worm reducer<\/strong> and a small-frame unit from the same catalogue. Consistent design language across sizes simplifies maintenance documentation, reduces spare-parts inventory complexity, and enables one-stop supply of complete drive packages when ordered alongside matching electric motors.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

What Is the EP-WPWKO Universal Speed Reducer?<\/h2>\n

The WPWKO designation identifies a hollow-output-shaft variant within the WP family of industrial universal speed reducer<\/strong> units. Like all WP-series worm gear reducers, it converts rotational input from an electric motor into right-angle output torque through the engagement of a hardened steel worm thread with a phosphor bronze worm wheel. What distinguishes the WPWKO from the WPWD or WPS universal speed reducer is the hollow bore at the output end \u2014 the driven shaft is inserted directly into the output hub rather than being connected via a coupling flange or jaw clutch.<\/p>\n

This arrangement is particularly practical in agitator drives, mixer shafts, spiral conveyor drives, and any application where the driven shaft protrudes from the machine frame and the reducer must mount around it. In these cases, a conventional solid-output worm gear reducer gearbox<\/strong> would require a coupling, alignment fixtures, and additional shaft support bearings \u2014 all of which add cost, length, and potential misalignment risk. The hollow bore of the EP-WPWKO eliminates those concerns entirely.<\/p>\n

The series covers size designations 40 through 250, with unit weights ranging from 5 kg at the smallest size up to 374 kg for the size 250 unit. Input power spans 0.12 kW at size 40 through 15 kW at the upper end, and 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 the standard product family. Whether you are specifying a new universal speed worm reducer<\/strong> for a greenfield installation or sourcing a replacement universal speed worm reducer<\/strong> for an existing machine, this series provides direct dimensional compatibility with the WPWKO universal speed reducer standard.<\/p>\n<\/div>\n

<\/p>\n

\n

Working Principle of the WPWKO Worm Gear Reducer<\/h2>\n

At the core of every worm gear speed reducer<\/strong> is the same fundamental geometry: a helical worm thread, rotating on the input shaft, drives a worm wheel mounted on the output shaft at exactly 90 degrees to the worm axis. Because the worm thread must complete many full rotations to advance the wheel by a single tooth increment, the output speed is dramatically lower than the input \u2014 this is the worm gear reduction ratio in practice. The EP-WPWKO universal speed reducer applies this principle with the additional feature that the output shaft is hollow, so the driven machine shaft slides through the hub and is locked with a keyway and setscrew or a shrink-disc clamp depending on the application torque level.<\/p>\n

The self-locking characteristic of the worm drive reducer deserves particular attention. When the helix angle of the worm is sufficiently shallow \u2014 typically at ratios of 1\/30 and above \u2014 friction between the worm thread and wheel tooth face prevents the output load from back-driving the input shaft. This inherent self-locking is a genuine safety feature in hoisting drives, gate valve actuators, and inclined conveyors, where the load must remain stationary when the motor is de-energised. No additional holding brake is required in most such applications, which reduces system cost and simplifies the control architecture.<\/p>\n<\/div>\n

<\/p>\n

\n

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

The housing of the EP-WPWKO universal speed reducer is cast from GG25 grey cast iron, selected for its vibration-absorbing properties and dimensional stability under thermal cycling. The casting wall thickness is sized to maintain housing rigidity under the reaction torque loads generated during high-torque operation, particularly relevant for the heavy duty worm drive gearbox<\/strong> configurations at size 175 through 250. Where application requirements demand higher structural integrity \u2014 for example, in shock-loaded or frequently reversing drives \u2014 ductile iron housings are available as an alternative material specification.<\/p>\n

The worm is manufactured from 20CrMnTi case-hardening steel or 42CrMo alloy steel, with the thread form ground after heat treatment to maintain tooth profile accuracy consistent with GB\/T10085 Class 6 standards. Surface hardness targets are HRC 45\u201355 on the worm thread flanks. The worm wheel is produced from ZCuSn10Pb1 phosphor bronze centrifugal casting, which delivers the low friction coefficient, shock resistance, and run-in embedability needed for reliable long-term engagement with the hardened worm. This material combination is the recognised industry standard for premium worm reducer<\/strong> construction worldwide.<\/p>\n<\/div>\n

<\/p>\n

\n

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

Industries and machinery types where the hollow-bore design of this universal speed reducer provides a decisive advantage<\/p>\n

\n
\n

Ribbon & Paddle Mixer Drives<\/h3>\n

Horizontal ribbon mixers and paddle agitators used in feed mills, chemical blending plants, and food ingredient processing across the UK and Netherlands regularly mount the worm drive reducer<\/strong> directly onto the mixing shaft using the hollow bore. This eliminates the separate coupling assembly typically required by solid-shaft reducers and allows the mixer trough to be positioned closer to the floor, reducing building headroom requirements.<\/p>\n<\/div>\n

\n

Screw Auger & Conveyor Drives<\/h3>\n

Grain elevators, cement screw conveyors, and bulk material transfer augers in agricultural and industrial facilities across Australia and Canada mount the WPWKO universal speed reducer directly onto the auger pipe or shaft. The hollow bore accepts the auger tube or centre shaft, and the foot-mounted housing bolts directly to the conveyor end plate.<\/p>\n<\/div>\n

\n

Slurry & Sludge Agitators<\/h3>\n

Wastewater treatment plants, biogas digesters, and slurry storage facilities in Brazil and Colombia that operate slow-rotation agitators at 10\u201330 rpm benefit from the EP-WPWKO at size 135 through 200. The worm gear speed reducer<\/strong> delivers the required low output speed with inherent self-locking at 1\/40 and higher ratios, preventing agitator creep when the motor is off \u2014 an important operational safety requirement in closed-tank anaerobic digestion systems.<\/p>\n<\/div>\n

\n

Bottling & Filling Turret Indexers<\/h3>\n

High-speed bottling lines and filling stations in South Korea and across Asia-Pacific use the WPWKO universal speed reducer series as the primary indexing drive for turret tables. The hollow bore mounts onto the central column shaft of the turret, and the smooth, backlash-minimised output of the worm gear reducer gearbox<\/strong> ensures accurate step-indexing without position overshoot.<\/p>\n<\/div>\n

\n

Agricultural Post-Harvest Equipment<\/h3>\n

Grain cleaning machines, root vegetable washers, and fruit sorting conveyors operating on farms and cooperatives in Australia and Colombia specify the size universal speed worm reducer<\/strong> in the 60\u2013100 range for bin and hopper discharge auger drives. The sealed oil bath lubrication and double-lipped shaft seals resist the combination of dust, moisture, and organic residue common in harvest and post-harvest environments, reducing the need for frequent maintenance during peak seasonal operation.<\/p>\n<\/div>\n

\n

Gate Valve & Actuator Applications<\/h3>\n

Larger WPWKO universal speed reducer units \u2014 size 155 through 250 \u2014 are well suited to manual or motorised gate valve actuators on pipelines and process vessels in chemical plants in the Netherlands and Canadian oil and gas facilities. The hollow bore accepts the valve spindle directly, and at 1\/50 and 1\/60 worm gear reduction ratios, the inherent self-locking prevents unintended valve travel under differential pressure when the drive is disengaged.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

About us – Universal Speed Reducer Manufacturer<\/h2>\n

We have accumulated more than ten years of focused engineering experience in mechanical power transmission, giving our production team a deep understanding of the real-world demands placed on a worm gear reducer motor<\/strong> installation in agricultural, industrial, and infrastructure applications. Our product line spans agricultural gearboxes, worm gear reducers, planetary gear drives, power take-off shafts, hydraulic cylinders, gears, chains, and motors \u2014 enabling us to serve as a single-source supplier for complete drive systems rather than individual components.<\/p>\n

The facility holds ISO 9001:2015 certification, which governs every stage of production from raw material incoming inspection through to final dimensional verification, functional testing, and outbound packaging. Casting materials used across our gearbox and reducer range include ductile iron, grey cast iron, cast steel, precision investment cast steel, and cast aluminium \u2014 matched to the mechanical requirements of each application rather than defaulted to a single grade. We also design and produce worm gear pairs, sprockets, pulleys, shafts, and custom non-standard mechanical assemblies to customer drawings and specifications.<\/p>\n<\/div>\n

<\/p>\n

\n

\u0648\u0631\u06a9 \u0634\u0627\u067e<\/h3>\n
\n
\"Assembly
\n\"Welding
\n\"Factory
\n\"Worm<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

Universal Speed Reducer Related Products<\/h2>\n

Complete drive system compatibility \u2014 motors and gearboxes from one source<\/p>\n

\n
\n

\"Electric<\/p>\n

\u0627\u0644\u06cc\u06a9\u0679\u0631\u06a9 \u0645\u0648\u0679\u0631\u0632<\/h3>\n

Pairing the EP-WPWKO with a correctly matched motor is straightforward when both come from the same production line. Our \u0627\u0644\u06cc\u06a9\u0679\u0631\u06a9 \u0645\u0648\u0679\u0631\u0632<\/a> range covers IEC frame sizes from fractional kW through 15 kW three-phase induction units, matching the input bore and flange dimensions of the WPWKO series directly. Ordering the electrical motors universal speed worm reducer<\/strong> package together allows our team to confirm system compatibility, check thermal ratings, and ship the complete drive assembly in a single consignment.<\/p>\n<\/div>\n

\n

\"Full<\/p>\n

\u0648\u0631\u0645 \u06af\u06cc\u0626\u0631 \u0628\u0627\u06a9\u0633<\/h3>\n

The WPWKO is one variant within a broader family of \u0648\u0631\u0645 \u06af\u06cc\u0626\u0631 \u0628\u0627\u06a9\u0633<\/a> types we manufacture \u2014 including NMRV aluminium housing units, WPS solid-shaft series, and double-reduction configurations for very high ratios. If your application requires an nmrv worm reducer for a compact, lightweight installation, or a worm reducer gearbox premium<\/strong> configuration for continuous heavy-duty service, our extended worm reducer catalogue covers the full spectrum.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

\u0627\u06a9\u062b\u0631 \u067e\u0648\u0686\u06be\u06d2 \u06af\u0626\u06d2 \u0633\u0648\u0627\u0644\u0627\u062a<\/h2>\n
\nWhat makes a hollow-bore universal speed reducer a better choice than a solid-shaft worm gearbox for a screw conveyor drive in an Australian grain handling facility?<\/summary>\n

In a grain handling screw conveyor, the auger pipe or centre shaft extends from the conveyor end plate \u2014 often with little room for an additional coupling and shaft stub. A hollow-bore universal speed reducer<\/strong> like the EP-WPWKO mounts directly onto that shaft without requiring a coupling assembly, which reduces the axial length of the drive arrangement by 80\u2013150 mm depending on size. It also eliminates a potential misalignment point.<\/p>\n<\/details>\n

\nWhich size universal speed reducer is best suited for driving a slow sludge agitator in a Brazilian wastewater treatment plant that requires a 1\/50 ratio and approximately 2.2 kW input?<\/summary>\n

For a Brazilian wastewater agitator requiring 2.2 kW at 1\/50 reduction, the EP-WPWKO-120 is the recommended size. Size 120 covers the 1\/30 ratio in the standard table, and the adjacent size 135 covers 1\/40. For a 1\/50 ratio at 2.2 kW, size 135 configured at 1\/50 is the correct match \u2014 it is rated for 3.0\u20134.0 kW input at 1\/40 and 1\/50, giving sufficient thermal headroom for continuous-duty agitator service in the warm ambient temperatures typical of Brazilian treatment facilities.<\/p>\n<\/details>\n<\/div>\n

\u0627\u06cc\u0688\u06cc\u0679\u0631: PXY<\/p>","protected":false},"excerpt":{"rendered":"

The EP-WPWKO series is a robust universal speed reducer designed for versatile industrial power transmission. Available in sizes ranging from 40 to 250, it offers reduction ratios from 1\/5 to 1\/60. Weighing between 5 kg and 374 kg, this unit features a durable cast iron housing and flexible mounting options with shaft direction configurations A (double hole output), B (double hole output), and C (double input). Key specifications include input shafts up to 18×7 mm and substantial output shafts up to 23×116.4 mm. The WPWKO ensures reliable torque transmission and stability, making it an ideal solution for heavy-duty machinery requiring precise speed control and adaptable installation in compact spaces.<\/p>","protected":false},"featured_media":871,"template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[34],"product_tag":[],"class_list":["post-870","product","type-product","status-publish","has-post-thumbnail","product_cat-universal-speed-reducer","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/superiortransmissioninc.com\/ur\/wp-json\/wp\/v2\/product\/870","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/superiortransmissioninc.com\/ur\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/superiortransmissioninc.com\/ur\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/superiortransmissioninc.com\/ur\/wp-json\/wp\/v2\/media\/871"}],"wp:attachment":[{"href":"https:\/\/superiortransmissioninc.com\/ur\/wp-json\/wp\/v2\/media?parent=870"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/superiortransmissioninc.com\/ur\/wp-json\/wp\/v2\/product_brand?post=870"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/superiortransmissioninc.com\/ur\/wp-json\/wp\/v2\/product_cat?post=870"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/superiortransmissioninc.com\/ur\/wp-json\/wp\/v2\/product_tag?post=870"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}