Description
WPWEDK Double Speed Cast Iron Worm Gearbox
The combination of universal installation versatility, direct IEC motor connection, hollow bore shaft-mount output, and extreme double-stage reduction ratio represents the most comprehensive drive specification in the WP series double-stage range. The WPWEDK Double Speed Cast Iron Worm Gearbox integrates all four: WPW-series universal body (5 shaft direction configurations), D-type IEC motor flange (direct motor mount), K-type hollow bore output (coupling-free shaft connection), and double-stage worm reduction (1/200–1/900). The most fully specified universal hollow bore motorised double-stage drive in the WP series catalogue.
Technical Specifications — WPWEDK
Key Parameters
| Parameter | Specification |
|---|---|
| Series | Double Speed WPWE+D+K |
| Housing | D-type split cast iron, dual-stage, WPW universal body |
| Input | IEC motor flange (D-type) |
| Output | Hollow bore (K-type) |
| Ratio | 1/200–1/900 |
| Size Range | 40–250 combined mm |
| Mounting | Foot-mount, D-split, IEC flange, K hollow output, universal body |
| Housing Material | FC20+ grey cast iron, dual-chamber |
| Worm Wheels | Matched pair tin-bronze ZCuSn10Pb1, both stages |
| Worm Shafts | 20CrMnTi case-hardened, 55–60 HRC, both stages |
| Lubrication | N220–N320 (–30°C–40°C); N320–N460 (40°C–65°C), both chambers |
| Max Oil Temp | 95°C continuous |
| Weight Range | 18–450 kg |
| Key Feature | Universal W-body + D-IEC + K hollow bore + D-split + double-stage — universal motorised hollow drive |
Size & Performance Data
| Size Combo | Ratio | Input (kW) | Output Torque (Nm) | A (mm) | AA (mm) | AB (mm) | BB (mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| 40–70 | 1/200 | 0.12 | 63–177 | 314 | 153 | 131 | 75 | 19 |
| 50–80 | 1/300 | 0.18 | 97–252 | 314 | 144 | 142 | 83 | 27 |
| 60–100 | 1/400 | 0.37 | 195–561 | 387 | 175 | 169 | 91 | 45 |
| 70–120 | 1/500 | 0.75 | 384–1166 | 425/445 | 193 | 175 | 109/111 | 75 |
| 80–135 | 1/600 | 1.5 | 616–1811 | 499 | 226 | 210 | 125 | 103 |
| 100–155 | 1/800 | 1.5 | 854–2100 | 570 | 269 | 252 | 148 | 147 |
| 120–175 | 1/900 | 3.0 | 1798–4463 | 631 | 287 | 255 | 181 | 204 |
| 135–200 | … | 4.0 | 2188–5830 | 630/680 | 318 | … | 202 | 298 |
| 155–250 | 5.5 | 5.5 | 2841–9066 | 815 | 380 | 385 | 247 | 470 |
Double-Stage Product Structure
The WPE double-stage housing contains two complete worm gear stages in one precision-machined cast iron body, with two independent oil chambers:
First worm shaft and bronze wheel — receives motor power, produces first reduction. Higher-speed, lower-torque stage optimised for input speed operating conditions.
Connects primary stage output to secondary stage input. Precision-machined, supported by C3-clearance bearings, transmits intermediate torque and speed between the two stages.
Second worm shaft and bronze wheel — lower speed, higher torque. Matched-pair manufacturing with primary stage ensures consistent inter-stage noise and efficiency throughout service life.
Two oil chambers — one per stage — each filled and monitored separately. Independent optimisation of lubrication viscosity and fill level per stage is a key advantage over two-gearbox cascade arrangements.
Two air vents and two oil gauges — one per chamber — provide independent pressure management and oil level monitoring for each stage throughout operation.
Single FC20+ cast iron casting forms both chambers with no gaskets between them. Monolithic rigidity prevents inter-chamber flex that could misalign intermediate shaft bearings.
Core Features & Benefits
■ 4-Feature Integration: Universal Body + IEC Flange + Hollow Bore + Double-Stage
The WPWEDK combines four key features: universal W-body, D-type IEC motor flange, K-type hollow bore output, and double-stage worm reduction in a single D-split cast iron housing.
■ Universal W-Body: 5 Shaft Direction Configurations Available
The WPW-series universal body supports 5 shaft direction configurations (A–E), providing installation orientation flexibility not available in orientation-specific WPE variants. All 5 configurations available with full D+K+double-stage features.
■ D-IEC Flange: Motor Bolt-On Without Adaptor in Any Orientation
The D-type IEC motor flange is integrated into the universal body across all 5 shaft direction configurations. Motor mounting requires only the standard flange bolts — no adaptor plate, no coupling, in any orientation.
■ K Hollow Bore: Shaft-Mount Without Coupling in Any Orientation
The K-type hollow bore output is rated for full double-stage torque in all 5 shaft direction configurations. The shaft slides into the hollow bore and is secured by keyway — no output coupling in any orientation.
■ D-Split Housing: In-Situ Service in All 5 Orientations
The D-split housing cover can be removed without disturbing the IEC motor or driven shaft in all 5 installation orientations — maximum field service convenience regardless of installation geometry.
■ Complete WPE Performance: Same Torque, Same Ratio, Universal Versatility
No performance compromise for universal versatility. WPWEDK output torques and ratio range are identical to the WPEDKA orientation-specific variant — full double-stage performance in a universal platform.
Industry Applications — WPWEDK
⚙ Universal OEM Motorised Shaft-Mount Slow Drives
OEM machine builders needing one motorised hollow bore double-stage product for all their machine configurations specify the WPWEDK as their universal platform drive.
⚔ Process Industry — Complete Drive Integration
Process industry specifications calling for IEC motor direct mount, hollow bore shaft connection, extreme ratio, and universal orientation support are satisfied by the WPWEDK from a single standard catalogue unit.
⚒ Pharmaceutical & Chemical — Universal Motorised Shaft Drives
Pharmaceutical and chemical process equipment with diverse installation orientations, requiring hollow shaft agitator connections and IEC direct motor mount, uses the WPWEDK for a single validated drive specification.
⚊ Multi-Product Manufacturing Lines
Manufacturing facilities producing diverse products on lines with different drive orientations benefit from the WPWEDK’s universal versatility — one product serves all drive positions.
☷ Maintenance Standardisation — Maximum BOM Simplification
Maintenance departments maximising BOM simplification specify the WPWEDK as their single slow motorised shaft-mount drive model — universal orientation covers all positions, IEC flange eliminates adaptors, hollow bore eliminates couplings.
Why Choose WPWEDK — Competitive Comparison
| Feature | Ever-power WPWEDK | Alternatives |
|---|---|---|
| IEC Motor Mount | ✓ D-flange — all 5 orientations | Adaptor plate required |
| Output | ✓ K hollow bore — all 5 orientations | Solid shaft + coupling |
| Orientation Support | ✓ Universal — 5 configurations | Single orientation per model |
| Ratio Range | ✓ 1/200–1/900 double-stage | 1/5–1/60 single stage |
| Maintenance Access | ✓ D-split in situ — all orientations | Orientation-specific teardown |
| Component Count (OEM) | ✓ 1 product for all orientations + features | Multiple products required |
Quality Control & Certifications
✎ ISO 9001:2000 Certified
Every WPWEDK is manufactured, assembled, and tested under the ISO 9001:2000 quality management framework. We were among the first in our industry category to achieve this certification.
✎ CE Marking
Full CE marking confirms compliance with EU Machinery Directive 2006/42/EC — covering safety, design standards, and manufacturing quality for mechanical power transmission equipment including double-stage worm gearboxes.
✎ Pre-Shipment Testing (Every Unit)
Noise test (below 72 dB(A) at rated load), oil leak test (30-minute pressurisation, both chambers), torque transmission test (output torque within ±5% of rated). Failed units are reworked — not shipped.
✎ Matched-Pair Manufacturing
Both worm wheel sets for each double-stage unit are manufactured in the same production batch, ensuring tooth profile consistency between primary and secondary stages. This matched-pair quality assurance is unique to our double-stage production process.
Why Choose Ever-power for WPWEDK
We have been producing WPE series double-stage cast iron worm gearboxes for over two decades. Our matched-pair production methodology and dual-chamber quality assurance are the result of accumulated process expertise.
Our CNC gear grinding centres, hobbing machines, and coordinate measuring machines — sourced from the USA, Japan, Germany, and Italy — produce the precision tooth profiles required for consistent double-stage inter-stage performance.
We export to the USA, Europe, Southeast Asia, Australia, and the Middle East. Our export documentation, CE certification, and packing standards are optimised for international supply chains including pharmaceutical and food industry procurement.
Full OEM services: custom nameplating, paint colours, shaft dimensions, flange configurations, and documentation packages. We support custom double-stage specifications from concept to production release.
Our application engineers provide double-stage gearbox selection, torque calculation, oil selection guidance, and installation support. Email [email protected] with your application data for a same-day selection recommendation.
WPE double-stage gearboxes serve pharmaceutical, chemical, food processing, cement, mining, paper, wastewater treatment, and general industrial sectors across global markets.
Customer Reviews & Case Studies
“WPWEDK is the single drive unit specification for our entire process equipment range. Universal body, IEC direct motor, hollow bore shaft, double-stage ratio. Our BOM went from 16 drive variants to 1. Engineering quality is excellent — all four features work seamlessly together.”
Australia 🇦🇺
“WPWEDK specified for all our reactor drive systems across our standard vessel range. Hollow bore agitator shaft, IEC overhead motor mount, double-stage ratio for 2 RPM agitation, split housing for CIP maintenance access. Universal body handles our various reactor orientations.”
Germany 🇩🇪
“We chose WPWEDK for our OEM machine platform redesign. The 4-feature combination was not available from any other standard catalogue product. Universal body allows us to use one design drawing for all machine orientations. Quality is excellent and consistent across our orders.”
South Korea 🇰🇷
“WPWEDK is our process plant standard for all slow motorised hollow shaft drives. Four features in one unit simplified our procurement significantly. IEC flange + hollow bore + double stage in any orientation from catalogue — very practical engineering product.”
Mexico 🇲🇽
Frequently Asked Questions — WPWEDK
Get Your WPWEDK Quote Today
Whether you need one unit for a retrofit or hundreds for an OEM production run, Ever-power has the
manufacturing capacity, ISO 9001 quality system, and technical expertise to deliver the WPWEDK to your
specification. Contact our engineering team — we respond within 24 hours.
✓ OEM & Distributor partnerships welcome
✓ Custom specifications available
✓ Global shipping
