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WPWDKS Universal Speed Cast Iron Worm Gearbox
The most fully integrated overhead shaft-mount drive in the universal speed series — combining D-type IEC motor flange in the S-type overhead position, K-type hollow bore output, D-split housing for field maintenance, and the WPW universal body supporting all 5 installation orientations — is the WPWDKS Universal Speed Cast Iron Worm Gearbox. For engineers specifying motorised overhead shaft-mount drives across multiple machine orientations with zero couplings on both sides and in-situ serviceability, the WPWDKS is the definitive single-product solution.
Technical Specifications — WPWDKS
Key Parameters
| Parameter | Specification |
|---|---|
| Series | Universal Speed (WPWD+K+S) |
| Housing | D-type split cast iron |
| Input | IEC motor flange (D-type), S-type (overhead) |
| Output | Hollow bore (K-type) |
| Ratio | 1/5–1/60 |
| Size Range | 40–250 mm |
| Mounting | Foot-mount, D-split, IEC S-flange, K hollow output |
| 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 | 7–481 kg |
| Key Feature | WPWDKS: universal body + D-IEC overhead + K hollow bore — zero-coupling overhead motorised shaft-mount in universal housing |
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 | 133 | 53 | 40 | 62 | 7 |
| 50 | 1/5–1/60 | 0.10–1.33 | 4.5–54.0 | 148 | 57 | 44 | 70 | 10 |
| 63 | 1/5–1/60 | 0.19–2.25 | 8.5–104 | 171 | 67 | 51 | 82 | 16 |
| 75 | 1/5–1/60 | 0.32–3.75 | 14.5–175 | 191 | 75 | 57 | 91 | 23 |
| 90 | 1/5–1/60 | 0.62–6.98 | 28–316 | 224 | 89 | 67 | 107 | 38 |
| 110 | 1/5–1/60 | 1.18–11.9 | 53–540 | 260 | 103 | 78 | 123 | 62 |
| 130 | 1/5–1/60 | 2.02–19.7 | 91–891 | 290 | 115 | 87 | 136 | 89 |
| 150 | 1/5–1/60 | 3.07–28.8 | 139–1304 | 329 | 131 | 100 | 155 | 128 |
| 175 | 1/5–1/60 | 5.13–45.9 | 232–2074 | 377 | 151 | 115 | 177 | 191 |
| 200 | 1/5–1/60 | 8.02–66.2 | 363–2993 | 424 | 170 | 130 | 199 | 267 |
| 250 | 1/5–1/60 | 14.0–106 | 633–4796 | 517 | 208 | 159 | 243 | 481 |
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
■ 4-Feature Integration: D-IEC S-Overhead + K Hollow + D-Split + Universal W-Body
The WPWDKS combines IEC overhead motor flange (D+S), hollow bore shaft-mount (K), in-situ maintenance access (D-split), and universal installation orientation (W-body). Four requirements. One standard catalogue unit.
■ D-Split Housing — Elevated Service Without Crane
D-split cover removes with motor mounted and shaft connected — in all 5 shaft direction configurations. For elevated overhead shaft-mount drives, this in-situ cover access eliminates the crane operation otherwise needed to lower the gearbox for service.
■ IEC Overhead Flange: Motor Drops Directly On
Motor lowered onto the upward-facing S-type IEC flange. Flange bolts secure the connection. No coupling, no adaptor, no alignment. Fastest possible overhead motor connection.
■ K Hollow Bore: Shaft Slides In, No Output Coupling
K-type hollow borereceives the driven shaft directly — no coupling hardware on the output side. Combined with the IEC input flange: zero coupling hardware on either side of the gearbox.
■ 5 Shaft Direction Configurations: All Features Available in All Orientations
All 5 shaft direction configurations (A–E) are available with the full D+K+S+D-split feature set. Universal orientation support is maintained even at maximum feature integration.
■ Full WP Performance — No Derating for Feature Combination
Output torques up to 4,796 Nm at size 250, ratios 1/5–1/60 — full WP performance is maintained across the full feature combination. No derating for D+K+universal configuration.
Industry Applications — WPWDKS
⚙ Maximum Integration Overhead Shaft-Mount Universal
Applications requiring IEC overhead motor (D+S), hollow bore shaft-mount (K), universal housing (5 orientations), and D-split service access find the WPWDKS satisfying all four specifications simultaneously.
⚒ OEM Overhead Hollow Bore Universal Platform — Motorised
OEM machine builders needing motorised overhead hollow bore drives across multiple machine orientations specify the WPWDKS as their maximum-integration S-input universal shaft-mount platform.
⚔ Premium Process Equipment — Overhead IEC Shaft Drives
Premium process equipment with overhead IEC motor mounting, shaft-mount output connection, and diverse machine orientations uses the WPWDKS as its most integrated motorised shaft drive specification.
⚊ Elevated Installations — Zero-Coupling Shaft-Mount
Elevated drive stations where zero-coupling-both-sides design is specified for mechanical simplicity and maintenance reduction use the WPWDKS across all overhead shaft-mount positions.
☷ Maximum BOM Reduction — Overhead Shaft-Mount Fleet
Industrial teams managing overhead shaft-mount drives across multiple orientations and equipment types standardise on WPWDKS for maximum BOM simplification: one SKU, all positions, zero couplings.
Why Choose WPWDKS — Competitive Comparison
| Feature | Ever-power WPWDKS | Alternatives |
|---|---|---|
| IEC Motor (Overhead) | ✓ D-IEC S-flange — direct, no adaptor | Adaptor bracket + coupling required |
| Output Connection | ✓ K hollow bore — shaft inserts directly | Solid shaft + coupling needed |
| Housing Maintenance | ✓ D-split in situ — all orientations, no crane | Full teardown, crane at height |
| Universal Orientation | ✓ 5-direction W-body — all positions | Fixed orientation-specific housing |
| External Couplings | ✓ Zero — neither side | Minimum 1 coupling per installation |
| BOM Simplification | ✓ 1 unit for all orientations + all features | Multiple units + adaptors + couplings |
Quality Control & Certifications
✎ ISO 9001:2000 Certified
Every WPWDKS 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 WPWDKS
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
“WPWDKS on all our elevated overhead shaft-mount drives. IEC motor drops on from above, shaft into the hollow bore below, D-split for in-situ inspection from a work platform. No crane for any routine service. Universal body covers all our drive positions. Exceptional practical engineering.”
Australia 🇦🇺
“WPWDKS specified for our overhead shaft-mount drive fleet. All four features were requirements — we confirmed the WPWDKS was the only standard catalogue unit satisfying all simultaneously. After 24 months of industrial production, every unit performing perfectly.”
Sweden 🇸🇪
“WPWDKS on our overhead shaft-mount drives. Zero-coupling-both-sides was a specific requirement for our explosion-proof zone. Cast iron housing, IEC overhead mount, hollow bore output, universal body — all confirmed to our hazardous area specification. Excellent product.”
Japan 🇯🇵
“WPWDKS satisfies our complete overhead shaft-mount specification. Four-feature integration replaced what was previously a four-component arrangement. Build quality consistently excellent. Occasional lead time extension during peak demand is the only inconvenience.”
Vietnam 🇻🇳
Frequently Asked Questions — WPWDKS
Get Your WPWDKS 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 WPWDKS to your exact specification. Contact our engineering team — we respond within 24 hours.
✓ OEM & Distributor partnerships welcome ✓ Custom configurations available ✓ Global shipping
