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WPWA Universal Speed Cast Iron Worm Gearbox
When your installation requires the standard below-entry input shaft geometry (motor coupling from beneath the gearbox) but the driven equipment must be accessible from multiple installation positions — and you need a housing that can be repositioned across machine variants without changing the gearbox model — the WPWA Universal Speed Cast Iron Worm Gearbox provides the solution. Built on the WPW-series universal body with A-type (below) input shaft configuration, the WPWA delivers standard below-entry worm gearbox performance with the universal body’s installation flexibility and multi-position support in a single cast iron housing.

Technical Specifications — WPWA

Key Parameters
| Parameter | Specification |
|---|---|
| Series | Universal Speed (WPW+A) |
| Housing | Solid integral cast iron (P-housing) |
| Input | Solid shaft (A-type, input from below) |
| Output | Solid shaft (horizontal) |
| Ratio | 1/5–1/60 |
| Size Range | 40–250 mm |
| Mounting | Foot-mount, A-type input orientation |
| Housing Material | FC20+ grey cast iron (GG20) |
| Worm Wheel | Tin-bronze alloy ZCuSn10Pb1 |
| Worm Shaft | 20CrMnTi carburised & hardened, 55–60 HRC |
| Lubrication | N150–N220 (–30°C–40°C); N220–N320 (40°C–65°C) |
| Max Oil Temp | 95°C continuous |
| Weight Range | 6.5–430 kg |
| Key Feature | WPWA: universal W-body with A-type (below) input — standard worm gearbox in universal housing with full 5-position mounting versatility |
Size & Performance Data
| Size (mm) | Ratio | Input Power (kW) | Output Torque (Nm) | A (mm) | AA (mm) | AB (mm) | BB (mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| 40 | 1/5–1/60 | 0.06–0.78 | 2.2–26.5 | 121 | 53 | 40 | 49 | 6.5 |
| 50 | 1/5–1/60 | 0.10–1.33 | 4.5–54.0 | 133 | 57 | 44 | 55 | 9 |
| 63 | 1/5–1/60 | 0.19–2.25 | 8.5–104 | 155 | 67 | 51 | 65 | 14 |
| 75 | 1/5–1/60 | 0.32–3.75 | 14.5–175 | 175 | 75 | 57 | 73 | 20 |
| 90 | 1/5–1/60 | 0.62–6.98 | 28–316 | 205 | 89 | 67 | 87 | 33 |
| 110 | 1/5–1/60 | 1.18–11.9 | 53–540 | 238 | 103 | 78 | 101 | 54 |
| 130 | 1/5–1/60 | 2.02–19.7 | 91–891 | 266 | 115 | 87 | 112 | 78 |
| 150 | 1/5–1/60 | 3.07–28.8 | 139–1304 | 302 | 131 | 100 | 128 | 113 |
| 175 | 1/5–1/60 | 5.13–45.9 | 232–2074 | 348 | 151 | 115 | 147 | 170 |
| 200 | 1/5–1/60 | 8.02–66.2 | 363–2993 | 392 | 170 | 130 | 165 | 238 |
| 250 | 1/5–1/60 | 14.0–106 | 633–4796 | 479 | 208 | 159 | 202 | 430 |
Universal W-Body Structure

The WPW-series universal housing is manufactured as a single FC20+ grey cast iron casting with bore positions, keyway orientations, and oil channels configured for the selected shaft direction. All 5 shaft direction configurations (A/B/C/D/E) use the same casting geometry with specific machining per configuration.
Hardened 20CrMnTi steel worm shaft with case-hardened tooth flanks (55–60 HRC). The worm shaft and its bearings are selected for the specific input orientation of the model — A-type (below), S-type (overhead), or bilateral — ensuring rated bearing life in the correct load direction.
Tin-bronze ZCuSn10Pb1 alloy worm wheel machined to mesh precisely with the hardened worm shaft. The bronze material provides excellent anti-seizure properties and wear-in characteristics for the worm gear mesh.
Output shaft in quenched-and-tempered steel with double-lip oil seals rated for the specific output orientation (horizontal, vertical upward O-type, vertical downward X-type, side T-type, or extended V-type). Seal selection matches the hydrostatic pressure requirements of the installed orientation.
Single-stage oil bath lubrication. Oil fill port, oil gauge, vent plug, and drain plug are positioned for the selected shaft direction configuration. Fill quantities are specified per configuration in the installation guide — do not use generic fill values across configurations.
FC20+ cast iron foot-mount base integrated with the housing casting. Four mounting holes for B3 foot mounting. The base orientation is fixed for the selected shaft direction configuration. For shaft-mount (hollow bore) applications, the torque arm boss provides housing restraint.
Core Features & Benefits
■ A-Type Input (Below) + Universal W-Body: Standard Input, Universal Housing
The WPWA provides the familiar below-entry input shaft geometry (standard for horizontal worm gearbox installations) in the WPW-series universal body, adding multi-position mounting capability to this standard configuration.
■ 5 Shaft Direction Configurations for A-Input Geometry
All 5 WPW shaft direction configurations (A–E) are available with the A-type input, allowing the below-entry motor position to be combined with diverse output shaft directions and housing mounting orientations.
■ Full WP Ratio Range 1/5–1/60
All standard worm ratios are available in the WPWA across all 5 shaft direction configurations — no ratio restrictions for the A-input universal housing.
■ FC20+ Cast Iron — Same Standard as WP Series
The WPW universal body maintains theFC20+ grey cast iron specification of the standard WP series housings. Universal mounting capability does not compromise material quality.
■ Output Torques up to 4,796 Nm (Size 250)
The WPWA provides the full WP series output torque range through the universal body with A-type input configuration.
■ ISO 9001:2000 + CE — Full Certification
Full ISO 9001:2000 quality management and CE marking for all WPWA configurations and sizes.
Industry Applications — WPWA

⚔ Standard Process Drives — Universal Housing Benefit
Standard process equipment drives with below-entry input that benefit from the universal body’s multi-position mounting options — for facilities standardising on a single gearbox platform regardless of input orientation.
⚒ Below-Entry Input — Multi-Machine OEM Standard
OEM machine builders whose machines require below-entry motor input across multiple machine configurations use the WPWA for its universal body combined with standard A-type input geometry.
⚊ Conveyor & Material Handling — A-Input Universal
Conveyor and material handling systems with below-entry motor positions in multiple machine configurations use the WPWA as their A-input universal standard.
☵ Packaging & Assembly Line Drives
Packaging machinery and assembly line drives with standard A-type motor input positions use the WPWA for the flexibility of universal body mounting across diverse machine layouts.
⚛ General Purpose — A-Input with Universal Versatility
General-purpose drive applications with below-entry input geometry that benefit from the WPW universal body’s multi-position versatility for future machine adaptation.
Why Choose WPWA — Competitive Comparison
| Feature | Ever-power WPWA | Alternatives |
|---|---|---|
| Input Orientation | ✓ A-type below — standard geometry | Fixed to housing-specific orientation |
| Housing Versatility | ✓ Universal 5-direction W-body | Orientation-specific housing |
| Machine Adaptability | ✓ Repositionable across machine variants | Fixed installation orientation |
| Spare Parts | ✓ One SKU — multiple machine positions | Multiple SKUs for multiple positions |
| Ratio Range | ✓ 1/5–1/60 all directions | Same range — fixed orientation |
| Housing Standard | ✓ WPW-series universal platform | WP orientation-specific body |
Quality Control & Certifications

✎ ISO 9001:2000 Certified
Every WPWA is manufactured, assembled, and tested under ISO 9001:2000 quality management. Our factory was among the first in this product 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 all WPW-series universal configurations.
✎ Pre-Shipment Testing
Noise test (below 72 dB(A) at rated load), oil leak test (30-minute pressurisation), torque transmission test (output torque within ±5% of rated). Failed units are reworked — not shipped.
✎ Universal Configuration Quality
Each shaft direction configuration (A–E) is verified dimensionally for correct bore position, keyway orientation, and oil channel routing before leaving our production line.
Why Choose Ever-power for WPWA

We have been manufacturing WPW-series universal cast iron worm gearboxes for over two decades. Our 5-shaft-direction production process — with orientation-specific quality checks — is a core competency of our manufacturing facility.
Our CNC machining centres maintain the bore position accuracy and keyway orientation tolerances required for consistent inter-part fit across all 5 shaft direction configurations of the WPW universal body.
We export the WPW series to Australia, Europe, Southeast Asia, the Middle East, and North America. Our export documentation, CE certification, and packing standards are optimised for international procurement.
Full OEM services: custom nameplating, paint colours, shaft dimensions, flange configurations, and documentation packages. Custom shaft direction combinations and output configurations available for OEM volumes.
Our application engineers provide WPW gearbox selection, load calculation, shaft direction selection, oil specification, and installation support. Email [email protected] with your application data.
The complete WPW universal series covers solid shaft, hollow bore, IEC flange, and extended shaft variants in all output directions — horizontal, vertical up, vertical down, side, and extended. One universal platform for all drive applications.
Customer Reviews & Case Studies
“WPWA on our below-entry motor drives across multiple machine configurations. The universal body means one product covers all our machine variants with A-type input. Standardised spares, standardised maintenance — exactly what we needed for a large multi-machine installation.”
Australia 🇦🇺
“WPWA universal housing with A-type input on our production line drives. The universal body allows us to position the gearbox across different machine configurations without changing the gearbox model. Good practical benefit for a multi-machine OEM product range.”
France 🇫🇷
“WPWA on our food processing line drives. Standard A-type input with the flexibility of the universal WPW body. Quality is excellent, dimensions are accurate to the catalogue data. Good product for our multi-line food processing standardisation requirement.”
Morocco 🇲🇦
“WPWA universal housing with standard A-input on our processing equipment. The universal body is slightly larger than the orientation-specific equivalent but the standardisation benefit outweighs this. Cast iron quality is consistently good across orders.”
China 🇨🇳
Frequently Asked Questions — WPWA
Get Your WPWA 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 WPW universal series expertise to deliver the WPWA to your exact specification. Contact our engineering team — we respond within 24 hours.
✓ OEM & Distributor partnerships welcome ✓ Custom configurations available ✓ Global shipping


