説明
WPWEDKO Double Speed Cast Iron Worm Gearbox
The most comprehensive double-stage drive specification in the WP series — combining universal installation support, IEC direct motor connection, hollow bore vertical output, and extreme double-stage reduction ratio — describes the WPWEDKO Double Speed Cast Iron Worm Gearbox. Building on the WPWEKO’s hollow bore vertical output and universal W-body platform, the WPWEDKO adds the D-type IEC motor flange for complete motorised hollow bore vertical drive integration. For process equipment engineers seeking the absolute maximum feature integration in a single standard double-stage catalogue unit, the WPWEDKO is that product.
Technical Specifications — WPWEDKO
Key Parameters
| Parameter | Specification |
|---|---|
| Series | Double Speed WPWE+D+K+O |
| Housing | D-type split cast iron, dual-stage, WPW universal body |
| Input | IEC motor flange (D-type) |
| Output | Hollow bore (K-type), vertical upward |
| Ratio | 1/200–1/900 |
| Size Range | 40–250 combined mm |
| Mounting | Foot-mount, D-split, IEC flange, K hollow vertical 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 | 20–484 kg |
| Key Feature | Ultimate WPE: universal W-body + D-IEC + K hollow + O vertical + D-split + double-stage |
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
■ Maximum WP Double-Stage Integration: Universal + IEC + Hollow Bore Vertical + Double-Stage
The WPWEDKO is the pinnacle of the WP double-stage range: WPW universal body, D-type IEC motor flange, K-type hollow vertical output (O-type upward), and double-stage worm reduction in a single D-split cast iron housing.
■ IEC Motor Flange (D) + Hollow Bore Vertical Output (K+O): Zero Couplings Both Sides
Motor bolts directly to D-type IEC flange (no input coupling). Driven shaft inserts into K hollow bore vertical output (no output coupling). Zero external coupling hardware on either side in any of the 5 universal body shaft directions.
■ Universal Body (5 Shaft Directions) + All Features: Ultimate Platform Standardisation
The WPWEDKO universal W-body carries all four features (D+K+O+double-stage) across 5 shaft direction configurations. One product covers all installation orientations with complete feature integration.
■ D-Split Housing — In-Situ Service in Any Orientation
The D-split housing cover removes in all 5 installation orientations without disturbing the IEC motor, hollow bore shaft, or output shaft vertical direction. Maximum field maintainability in the most feature-rich double-stage unit available.
■ Full WPE Double-Stage Performance — No Compromise
Output torques, ratio range (1/200–1/900), and noise levels of the WPWEDKO are identical to the WPEDKA (orientation-specific 4-feature variant). Universal body and maximum feature integration introduce no performance derating.
■ ISO 9001:2000 + CE: Maximum Certification for Maximum Specification
Every WPWEDKO is manufactured under ISO 9001:2000 quality management with full CE marking, providing the engineering certification documentation required for premium pharmaceutical, chemical, and food process equipment procurement.
Industry Applications — WPWEDKO
⚙ Motorised Hollow Shaft Slow Vertical Agitators — Universal
The complete motorised hollow shaft slow vertical agitator drive specification — IEC motor direct, hollow bore output, vertical direction, extreme ratio, universal orientation — is uniquely satisfied by the WPWEDKO in a single standard catalogue unit.
⚒ Pharmaceutical & Biotech Premium Hollow Shaft Drives
Pharmaceutical and biotech facilities with hollow shaft bioreactor agitators requiring overhead IEC motor mounting, extreme agitation ratios, and universal vessel orientation support specify the WPWEDKO as their premium drive standard.
⚔ Chemical Process — Maximum Feature Integration Vessel Drives
Chemical process vessels requiring: hollow shaft agitator (K), overhead IEC motor (D), ultra-slow agitation (double-stage), top-entry vertical (O), diverse vessel orientations (universal W-body) — all satisfied by the WPWEDKO.
⚊ Advanced OEM — Maximum Integrated Hollow Vertical Platform
Advanced OEM machine builders designing the most highly integrated slow hollow vertical agitator drive systems specify the WPWEDKO as the single drive unit eliminating every external component on both input and output sides.
☷ Research & Pilot Plant — Premium Universal Hollow Drives
Research facilities requiring the highest engineering specification for slow hollow shaft agitator drives across diverse pilot plant vessel configurations use the WPWEDKO as their universal premium drive standard.
Why Choose WPWEDKO — Competitive Comparison
| Feature | Ever-power WPWEDKO | Alternatives |
|---|---|---|
| Features in One Unit | ✓ 4: Universal + IEC + K Hollow Vertical + Double-Stage | Maximum 3 in other standard units |
| IEC Motor Mount | ✓ D-flange — overhead or any orientation | Coupling required |
| Output | ✓ K hollow bore in vertical (O) direction | Solid shaft + right-angle adaptor |
| Orientation | ✓ Universal W-body — 5 configurations | Orientation-specific |
| Ratio Range | ✓ 1/200–1/900 double-stage | 1/5–1/60 single stage |
| External Hardware | ✓ Zero couplings input or output | Minimum 1 coupling + adaptor |
Quality Control & Certifications
✎ ISO 9001:2000 Certified
Every WPWEDKO 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 WPWEDKO
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
“WPWEDKO is our ultimate bioreactor agitator drive specification. Hollow shaft vertical output at 2 RPM, IEC direct overhead motor, universal body across all our vessel configurations. D-split housing for CIP maintenance access. Four features in one unit is unprecedented in standard catalogue products. After 24 months in pharmaceutical GMP service, every unit performing perfectly.”
Australia 🇦🇺
“WPWEDKO satisfies our complete bioprocessing hollow shaft agitator drive specification — five requirements in one product. Universal body handles all our bioreactor vessel orientations. Zero external coupling hardware for our sterile environment specification. D-split housing for maintenance without vessel sterilisation interruption.”
Germany 🇩🇪
“WPWEDKO drives our hollow shaft bioreactor agitators at 1.5–3 RPM. Combination of hollow vertical output, IEC overhead motor, double-stage ratio, and universal installation support in one standard catalogue unit is technically remarkable. Quality and dimensional precision are consistent with our highest-specification requirements.”
Japan 🇯🇵
“WPWEDKO is our validated drive standard for all hollow shaft reactor agitators. GMP validation was straightforward — standard catalogue product with ISO/CE documentation. 4-feature integration eliminated 4 components per agitator from our BOM. Cost reduction plus validation simplification — outstanding dual benefit.”
France 🇫🇷
Frequently Asked Questions — WPWEDKO
Get Your WPWEDKO 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 WPWEDKO to your
specification. Contact our engineering team — we respond within 24 hours.
✓ OEM & Distributor partnerships welcome
✓ Custom specifications available
✓ Global shipping
