Opis
WPDKA Flange-Mounted Hollow Shaft Single Speed Worm Gear Reducer
Compact material-handling drive challenges demand a solution where coupling misalignment, long drivetrain spans, and frequent maintenance cycles erode productivity. The WPDKA hollow shaft worm gearbox solves these problems by integrating motor flange mounting with a hollow-shaft output that slides directly onto conveyor or shaft ends — no coupling hardware, no alignment shimming, no downtime lost to intermediary components. The result is a shorter, stiffer, more reliable drivetrain for roller conveyors, stackers, and high-density logistics automation.
Technical Specifications
Refer to the full dimension drawing below before selecting your size and ratio. All critical shaft and flange parameters are shown.
| Size | Input Power (kW) | Ratio | A (mm) | AB (mm) | B (mm) | H (mm) | HL (mm) | Output S×W×Y | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|
| 40 | 0.12 | 1/5–1/60 | 135 | 75 | 85 | 138 | 40 | 16×6×18.8 | 5 |
| 50 | 0.18 | 1/5–1/60 | 151 | 83 | 105 | 176 | 50 | 20×6×22.8 | 8 |
| 60 | 0.37 | 1/5–1/60 | 167 | 91 | 110 | 204 | 60 | 25×8×28.3 | 10.5 |
| 70 | 0.37–0.75 | 1/5–1/60 | 200–202 | 109–111 | 130 | 236 | 70 | 30×8×33.3 | 17 |
| 80 | 0.75–1.5 | 1/5–1/60 | 225 | 125 | 150 | 268 | 80 | 35×10×38.3 | 25 |
| 100 | 1.5 | 1/5–1/60 | 280 | 148 | 160 | 336 | 100 | 40×12×43.3 | 38 |
| 120 | 2.2–3.0 | 1/5–1/60 | 333 | 181 | 175 | 430 | 120 | 45×14×48.8 | 60 |
| 135 | 3.0–4.0 | 1/5–1/60 | 375 | 202 | 210 | 480 | 135 | 60×18×64.4 | 85 |
| 155 | 4.0–5.5 | 1/5–1/60 | 425–448 | 224–247 | 256 | 531 | 155 | 70×20×74.9 | 120 |
| 175 | 5.5–7.5 | 1/5–1/60 | 481 | 262 | 282 | 600 | 175 | 80×22×85.4 | 150 |
| 200 | 7.5–11.0 | 1/5–1/60 | 516–543 | 258–285 | 320 | 666 | 200 | 85×22×90.4 | 218 |
| 250 | 11.0–15.0 | 1/5–1/60 | 615 | 330 | 400 | 800 | 250 | 110×28×116.4 | 350 |
ⓘ Input shaft speed reference: 1500 r/min. Output torque up to 3025 N·m (size 250, ratio 1/60).
Product Structure
The WPDKA integrates four functional zones in one compact housing. The flange input face (IEC/NEMA standard bolt pattern) mates directly to the motor face, transferring rotation without an intermediate coupling. Inside, a hardened alloy steel worm shaft meshes with a phosphor-bronze worm wheel to achieve the selected ratio with low backlash. The hollow bore output is supported by dual pre-loaded tapered roller bearings that handle both radial and axial loads from the conveyor shaft. An oil-level sight glass, drain plug, and breather cap are all accessible without disassembly.
- FC25 high-strength cast iron housing — shock-resistant, excellent heat dissipation
- Alloy steel worm (20CrMnTi) with case-hardened surface — HRC58–62
- Tin-bronze worm wheel — self-lubricating, wear-resistant
- SKF/NSK equivalent tapered roller bearings on output hollow shaft
- Double-lip oil seal — IP65-class shaft sealing
Key Features & Benefits
Coupling-Free Direct Drive
Motor bolts directly to the flange face; the output hollow shaft slides onto the conveyor shaft. Eliminates alignment errors and reduces axial footprint by up to 30% versus traditional belt-and-coupling setups.
Heavy-Duty Cast Iron Housing
FC25 gray cast iron provides exceptional vibration damping and thermal conductivity. Suitable for ambient temperatures −10 °C to +40 °C with continuous duty up to 95 °C oil temperature.
High Ratio Range: 1/5 to 1/60
Nine standard ratios cover nearly every conveyor speed requirement. Paired with standard IEC B5 flange motors from 0.12 kW to 15 kW, the WPDKA adapts to any line speed.
Six Shaft Directions (A–F)
Multiple configurable shaft output orientations give system designers full flexibility when routing drives in tight machine frames or multi-level conveyor structures.
Industry Applications
The WPDKA’s hollow-shaft flange design makes it the preferred integrated worm drive for material handling, eliminating the most failure-prone elements in conveyor lines.
Roller Conveyor Lines
Direct-mount drive for gravity and powered roller conveyors in warehouses and distribution centres. Eliminates sprocket/chain intermediaries.
Stacker & Retrieval Systems
Automated storage/retrieval (AS/RS) stackers demand precise, compact geardrives. WPDKA’s rigid hollow-shaft coupling provides backlash-free positioning.
Logistics Sorting Equipment
Parcel sorting lines, cross-belt sorters, and pop-up transfer units benefit from the compact motor-gearbox assembly that fits inside narrow conveyor frames.
Assembly Line Indexing
Automotive and electronics assembly lines use WPDKA gearboxes for pallet indexing stations where consistent low-speed torque is critical.
Quality Control & Certifications
Full quality management system covering raw material procurement, machining, assembly, and final inspection.
Meets EU Machinery Directive 2006/42/EC. Documentation available for CE marking projects in Europe.
Every unit runs loaded on the test bench. Noise level, oil seal integrity, and output torque are verified against spec before packaging.
Material test reports (MTR) available on request. Tensile strength ≥250 MPa, hardness HB170–240.
Why Choose Ever-power?
🏢 20+ Years Manufacturing
We have been producing WP-series worm gearboxes since 2003. Our factory covers 25,000 m² with over 120 CNC machining centres dedicated to gear production.
🌐 Export to 60+ Countries
We ship WPDKA reducers to the EU, North America, Southeast Asia, the Middle East, and Australia. Consolidated export experience ensures reliable documentation and packaging.
🔧 Full OEM/ODM Service
We offer custom bore diameters, special flange patterns, non-standard ratios, and private-label casting. MOQ as low as 1 unit for trials.
⏳ Lead Time 7–15 Days
Standard sizes held in stock. Full container orders dispatched within 15 working days. Expedited air freight available for urgent replacements.
Customer Reviews
“We replaced our previous coupled drives on all 24 roller conveyor stations with WPDKA size 80. Installation took half the time and we’ve had zero alignment issues in 14 months.”
🇦🇺 Mark T. — Logistics Systems Integrator, Melbourne, Australia
“The hollow bore diameter matched our conveyor shaft perfectly. We ordered 50 units and every single one was within tolerance. Very consistent quality from Ever-power.”
🇩🇪 Klaus M. — Automation Engineer, Stuttgart, Germany
“Used WPDKA 100 on our stacker crane project. The compact flange design saved us 80 mm on each drive unit — crucial in a tight AS/RS rack structure. Torque performance is exactly as rated.”
🇩🇰 Soren L. — Project Manager, Copenhagen, Denmark
“Our assembly-line indexing application needed a reliable, low-noise gearbox that fits flush to the frame. WPDKA 120 delivered exactly that. Running 3 shifts for 9 months with no issues.”
🇷🇼 Ahmed R. — Plant Engineer, Riyadh, Saudi Arabia
Frequently Asked Questions
What motor flange standards does the WPDKA support?
The WPDKA accepts IEC B5 and B14 flange motors as standard. Custom flanges for NEMA frame motors are available on request. Flange dimensions (LA, LB, LC, LE, LZ) are listed in the specification table above for each size.
Can the hollow output bore be customised?
Yes. Standard hollow bore diameters (S) range from 16 mm to 110 mm depending on size. We can machine non-standard bores, keyways, or shrink-disc interfaces for OEM orders. Please provide shaft diameter and torque requirements.
Which lubricant should I use for the WPDKA?
For ambient temperatures −30 °C to 40 °C use ISO VG220–320 mineral gear oil. For 40 °C–65 °C ambient, ISO VG320–460. Change oil after the first 100 hours, then every 2500 operating hours thereafter.
What is the maximum output torque of the WPDKA series?
Size 250 at ratio 1/60 delivers up to 3025 N·m output torque at 1500 r/min input speed. For lower input speeds (e.g. 1000 r/min), consult the torque-ratio tables in the product datasheet or contact our engineering team.
Is the WPDKA suitable for outdoor or dusty environments?
The standard unit has IP55-equivalent protection. For harsh outdoor, high-dust, or wash-down environments, we recommend pairing with an external shaft guard and using synthetic grease-packed bearings. Special IP65 oil-seal configurations are available on request.
Ready to Streamline Your Conveyor Drive System?
Talk to our engineers about the right WPDKA size for your load requirements. We offer free selection assistance, fast quotes, and OEM support. Learn more about Ever-power or explore our full WP series catalogue.
