EP-5 to 374 kg WPWKT-V Universal Speed Reducer
The EP-WPWKT-V series universal speed reducer features universal worm gear reducers in WPWKT and WPWKV configurations, engineered for heavy-duty industrial applications. Available in sizes 40 to 250, these units offer reduction ratios from 1/5 to 1/60. Weighing between 5 kg and 374 kg, they boast robust cast iron housings with versatile shaft arrangements, including double-hole outputs and side inputs. Key specifications include input shafts up to 18×7 mm and substantial output shafts up to 28×116.4 mm. This series ensures high torque capacity and durability, providing reliable speed reduction solutions for machinery requiring stable performance and flexible mounting options in demanding environments.
EP-WPWKT-V Universal Speed Reducer — 5 to 374 kg Series
O EP-WPWKT-V universal speed reducer is a hollow-bore, foot-mounted worm gear speed reducer built for demanding industrial environments where precise output speed control and structural rigidity are non-negotiable. With frame sizes spanning 40 through 250 and a weight range of 5 kg to 374 kg, this universal speed reducer handles an exceptionally broad range of drive requirements — from light-duty indexing mechanisms to continuous-cycle heavy process equipment. The WPWKV hollow-bore output design eliminates the need for a conventional solid output shaft, allowing the driven component to mount directly onto the reducer with minimal alignment hardware and a significantly reduced drive-unit footprint.
Available in reduction ratios of 1/5 through 1/60, the EP-WPWKT-V universal speed worm reducer covers virtually every low-speed torque requirement that a standard three-phase or single-phase motor drive might encounter. Each unit ships fully assembled and pre-lubricated, ready for immediate installation. Whether you are specifying a new universal speed worm reducer for a greenfield production line or sourcing a replacement universal speed reducer for an existing machine, the WPWKT-V series provides the dimensional consistency and quality assurance your project demands.
Technical Specifications — WPWKT-V (WPWKV) Series Universal Speed Reducer
The specification table below covers all twelve frame sizes in the EP-WPWKT-V universal speed reducer family. Dimensions are in millimetres (mm) and unit weight in kilograms (kg). All reduction ratios listed (1/5 through 1/60) are available for each frame size unless otherwise noted. Input shaft and hollow output bore dimensions are shown as T×V (input hole diameter × depth, mm) and W×V (output bore diameter × depth, mm). For torque capacity at a specific duty point, apply the appropriate service factor from the selection guide or contact our technical team.
| Tamanho | Razão | AB | B | CC | LL | M | N | E | E₁ | E₂ | G | Z | HS | Input T×V | S | Output W×V | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 40 | 1/5–1/60 | 87 | 85 | 40 | 63 | 90 | 187 | 70 | 72 | 97 | 12 | 10 | 25 | 4×2.5 | 16 | 6×18.8 | 5 |
| 50 | 1/5–1/60 | 108 | 105 | 50 | 70 | 120 | 226 | 95 | 90 | 110 | 14 | 12 | 30 | 4×2.5 | 20 | 6×22.8 | 8 |
| 60 | 1/5–1/60 | 120 | 110 | 60 | 80 | 130 | 257 | 105 | 102 | 129 | 15 | 12 | 40 | 5×3 | 25 | 8×28.3 | 11 |
| 70 | 1/5–1/60 | 140 | 130 | 70 | 95 | 150 | 305 | 115 | 120 | 155 | 20 | 15 | 40 | 5×3 | 30 | 8×33.3 | 15.5 |
| 80 | 1/5–1/60 | 160 | 150 | 80 | 105 | 170 | 350 | 135 | 140 | 180 | 20 | 15 | 50 | 7×4 | 35 | 10×38.3 | 24 |
| 100 | 1/5–1/60 | 190 | 160 | 100 | 135 | 190 | 410 | 155 | 165 | 215 | 22 | 15 | 50 | 7×4 | 40 | 12×43.3 | 38 |
| 120 | 1/5–1/60 | 219 | 175 | 120 | 160 | 230 | 494 | 180 | 195 | 255 | 25 | 18 | 65 | 7×4 | 45 | 14×48.8 | 56 |
| 135 | 1/5–1/60 | 249 | 210 | 135 | 185 | 250 | 559 | 200 | 230 | 285 | 30 | 18 | 75 | 10×4.5 | 60 | 18×64.4 | 84 |
| 155 | 1/5–1/60 | 295 | 256 | 155 | 220 | 275 | 605 | 220 | 250 | 305 | 35 | 21 | 85 | 12×5 | 70 | 20×74.9 | 129 |
| 175 | 1/5–1/60 | 314 | 282 | 175 | 240 | 310 | 675 | 250 | 273 | 348 | 40 | 21 | 85 | 14×5.5 | 80 | 22×85.4 | 157 |
| 200 | 1/5–1/60 | 342 | 320 | 200 | 280 | 360 | 749 | 290 | 305 | 390 | 40 | 24 | 95 | 14×5.5 | 85 | 22×90.4 | 224 |
| 250 | 1/5–1/60 | 420 | 400 | 250 | 315 | 460 | 920 | 380 | 375 | 475 | 45 | 28 | 110 | 18×7 | 110 | 28×116.4 | 374 |
All dimensions in mm. Unit weight in kg. Scroll horizontally on mobile to view full table.
Advantages of the EP-WPWKT-V Universal Speed Reducer
The WPWKV hollow-bore output shaft arrangement eliminates the need for a conventional coupling and solid output shaft extension. The driven shaft — whether a conveyor tube, agitator spindle, or roller axle — inserts directly through the bore, dramatically shortening the drive package length and improving concentricity. For engineers specifying compact drive systems in Australia, the UK, and South Korea, this feature alone often determines which worm gear reducer gearbox makes the shortlist.
Nine standard reduction ratios — 1/5, 1/10, 1/15, 1/20, 1/25, 1/30, 1/40, 1/50, and 1/60 — are available across the same frame sizing structure. This means a single worm gear reduction ratio can be changed at the specification stage without altering mounting dimensions, simplifying machine variants and spare-parts inventory for OEMs producing multiple product configurations from a common frame platform.
The WPWKV series universal speed reducer supports two shaft direction arrangements as standard. Configuration A provides an input entering from one side with a dual hollow-bore output, while Configuration B reverses the input direction — enabling right-hand or left-hand drive integration without sourcing a custom unit. This flexibility makes the EP-WPWKT-V universal speed reducer a practical universal speed worm gear reducer for machinery manufacturers who need a standardised gearbox across mirror-image machine layouts on the same production line.
By concentrating the worm-and-wheel mesh within a close-tolerance cast iron housing, the WPWKT-V series universal speed reducer achieves high torque worm gearbox performance without the bulk of equivalent parallel-shaft reducers. Frame size 250 handles up to 374 kg at ratios above 1/40, making it a credible large universal speed reducer option for heavy-cycle packaging, material handling, and mixing applications globally where floor space is constrained but torque demand is not.
How Does a Worm Gear Reducer Work?
The operating principle of a worm drive speed reducer is grounded in the geometry of a helical worm meshing with a bronze worm wheel set at 90 degrees. The worm — connected to the motor shaft — rotates at input speed. As it turns, each lead of the worm thread advances the wheel by a single tooth. Because the wheel carries far more teeth than the worm has starts, large worm gear reduction ratios emerge from this single stage of meshing — no compound gearing is required.
Do worm gears reduce speed? That is precisely what they are designed to do. The ratio between wheel tooth count and worm starts defines the output speed: a 40-tooth wheel driven by a single-start worm produces a 1/40 reduction. At 1400 rpm motor input, the output shaft turns at just 35 rpm — delivering correspondingly higher torque at the output bore. In the WPWKT-V universal speed reducer design, that torque is transmitted through the hollow output bore directly to the driven shaft, with no coupling losses.
What is the purpose of the gear reducer in a drive train? It bridges the gap between a fast-spinning, low-torque motor and a slow-turning, high-torque process load. A properly selected worm speed reducer gear box protects the motor from overload, reduces mechanical stress on downstream components, and extends the overall service life of the drive system. For applications where back-driving must be prevented — lifting, gate actuation, positioning — the inherent self-locking tendency of high-ratio worm gear reducers adds a built-in passive safety function without additional hardware.
Universal Speed Reducer Materials & Construction
The EP-WPWKT-V universal speed reducer housing is cast from HT200 grey cast iron — a grade selected for its combination of compressive strength, inherent vibration damping, and machinability. Once cast, each housing undergoes precision boring on a CNC machining centre to achieve the bore concentricity tolerances required for correct gear mesh geometry. Any deviation at this stage compounds through the drivetrain, so bore accuracy is treated as a critical dimension at every size from 40 to 250.
The worm shaft is produced from 20CrMnTi alloy steel, carburized to a case depth of 0.8–1.2 mm and hardened to HRC 58–62 at the tooth contact surface. The tough core beneath the hard case absorbs shock loads without fracture — an important characteristic in worm reducer motor pairings where start-stop cycles generate repeated torque spikes. The worm wheel is cast in ZCuSn10Pb1 phosphor bronze, chosen for its naturally low friction coefficient against hardened steel and its resistance to adhesive wear under sustained sliding contact. Together, this material pairing underpins the long mesh life that makes the WPWKT-V Universal Speed Reducer series a reliable premium worm reducer across a broad range of operating environments.
Output bore and input shaft holes are finished to H7 tolerance, ensuring interference-free assembly with standard shaft diameters while maintaining adequate contact area for torque transfer. Bearings are selected to handle both radial and axial loads generated by the helical worm mesh, and are retained in machined housings to prevent migration under thermal cycling. Lip seals at all shaft penetrations meet IP55 ingress protection as standard, with enhanced sealing options available for washdown or outdoor exposure.
Universal Speed Reducer Application Scenarios
The hollow-bore output of the EP-WPWKT-V universal speed reducer opens up application possibilities that solid-shaft reducers cannot match. By accepting the driven shaft directly through the bore, the WPWKT-V universal speed reducer eliminates shaft couplings, reduces radial load on the reducer's own output bearing, and results in a more compact overall drive assembly. The following are the primary sectors where this universal speed worm reducer consistently proves its value — across markets from Brazil and Colombia to Australia and the Netherlands.
Roller & Drum Drives
Conveyor rollers, mixing drums, and cylindrical screeners are natural partners for a hollow-bore worm gear reducer gearbox. The roller shaft passes directly through the output bore and is locked with a standard keyway or shrink-disc arrangement. This mounting method eliminates the bending moment a cantilevered coupling arrangement would impose, extending bearing and seal life considerably on equipment that runs 16 to 24 hours daily in logistics centres across South Korea and the UK.
Screw Conveyors & Augers
Grain augers, cement screws, and powder transfer conveyors in agricultural and processing facilities rely on the worm drive speed reducer to manage torque surges when the screw encounters compacted material. The brown universal speed worm reducer (standard green coating or custom powder finishes) tolerates the intermittent overloads common in this application and maintains accurate output speed even as feed rate fluctuates — an important characteristic in batching and dosing lines in Canada and the Netherlands.
Packaging & Labelling Machinery
OEM packaging equipment builders in Brazil and Colombia frequently choose size universal speed worm reducer configurations in the 40–80 frame range for their filling, capping, and label-application stations. The compact WPWKT-V Universal Speed Reducer envelope fits within tight frame structures, and the consistent output speed — even under variable torque from different container weights — keeps package throughput accurate without requiring PLC speed correction on every cycle.
Industrial Washing & Tumbling
Tumble dryers, parts washers, and rotary kilns need a heavy duty worm drive gearbox that resists the constant vibration and thermal cycling inherent to these processes. The IP55-sealed WPWKT-V housing keeps lubricant in and water splash out over extended duty cycles, while the bronze worm wheel handles the sustained sliding contact without requiring frequent adjustment — reducing planned maintenance frequency and the associated lost production time.
Slow-Speed Positioning Tables
CNC rotary tables, welding positioners, and index fixtures in metalworking shops across Australia and South Korea benefit from the high resolution of the 1/60 reduction ratio available in this series. At 1400 rpm input, the output shaft completes one revolution every 2.57 seconds — providing fine angular control when the positioner motor is pulse-width modulated by a variable frequency drive. The self-locking tendency at high ratios also holds the table position between index moves without a separate brake.
Irrigation & Water Management
Sluice gate actuators, pivot-irrigation drives, and water treatment mixer shafts in agricultural regions of Brazil, Australia, and South Korea favour a worm speed reducer that requires minimal lubrication attention and tolerates extended outdoor storage without corrosion. The phosphate-plus-powder-coat exterior of the WPWKT-V series universal speed reducer meets these demands, and the hollow-bore output simplifies coupling to existing irrigation shaft infrastructure during a replacement universal speed reducer installation.
About Us — Universal Speed Reducer Manufacturer
With more than a decade of focused production experience, our engineering and manufacturing team covers agricultural gearboxes, worm gear reducers, planetary gear drives, PTO shafts, hydraulic cylinders, gears, chains, and motors. Our factory carries ISO 9001:2015 certification — meaning every production process, from incoming material verification to final product dispatch, operates within a documented quality management framework that is audited by an independent certification body.
Our capabilities extend beyond catalogue products. We design and produce a broad range of industrial and agricultural gearboxes and drive assemblies in ductile iron, cast iron, cast steel, precision cast steel, and cast aluminium. In-house machining handles gears, sprockets, worm gears, pulleys, worms, shafts, and both standard and fully bespoke mechanical components.
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Related Products — Complete Drive System Supply
The EP-WPWKT-V universal speed reducer performs best when matched with compatible upstream and downstream drive components from the same supply source. Consistent interface standards and coordinated product engineering ensure that the system works as an integrated whole — reducing commissioning time and simplifying after-sales support for your engineering team.
Our range of IEC-frame Motores elétricos is matched to the WPWKT-V input shaft dimensions across all frame sizes from 40 through 250. Direct flange coupling eliminates shaft alignment issues and reduces the drive unit's overall length — a significant benefit when installing electrical motors universal speed worm reducer combinations into existing machine frames with limited clearance. Motors from 0.12 kW to 15 kW are held in stock for quick despatch.
When the WPWKT-V series does not meet your precise dimensional or output arrangement requirement, our full Caixa de engrenagens sem-fim catalogue covers NMRV, WP, WPA, WPS, WPWDA, and WPWDS configurations — all built on the same quality standard and sharing compatible motor-flange interface dimensions. One source, one quality standard, one technical contact: that is the practical advantage of specifying gear worm reducer products from a single manufacturing facility for multi-machine installations.
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