WPWDS Universal Speed Cast Iron Worm Gearbox — WPW Series

Motorised overhead drives — where the IEC motor mounts directly above the gearbox via flange connection and the installation must work in multiple orientations — combine two demanding specifications: overhead IEC motor geometry (D+S type) and universal housing versatility. D-type split cast iron, ratio 1/5–1/60, sizes 40–250mm. WPWDS: universal body + D-IEC flange (overhead S-type) — motorised overhead motor drive in universal W-housing with split-housing service access. ISO 9001:2000, CE certified.

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WPWDS Universal Speed Cast Iron Worm Gearbox

Motorised overhead drives — where the IEC motor mounts directly above the gearbox via flange connection and the installation must work in multiple orientations — combine two demanding specifications: overhead IEC motor geometry (D+S type) and universal housing versatility. The WPWDS Universal Speed Cast Iron Worm Gearbox delivers both: D-type IEC motor flange in the S-type (overhead) input position, WPW-series universal body, and D-split housing for field serviceability. The single product for all motorised overhead-motor universal drive requirements from ratio 1/5 to 1/60.

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WPWDS universal speed cast iron worm gearbox

Technical Specifications — WPWDS

WPWDS dimension drawing

Key Parameters

Parameter Specification
Series Universal Speed (WPWD+S)
Housing D-type split cast iron
Input IEC motor flange (D-type), S-type (from above)
Output Solid shaft (horizontal)
Ratio 1/5–1/60
Size Range 40–250 mm
Mounting Foot-mount, D-split, IEC S-flange (overhead)
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 WPWDS: universal body + D-IEC flange (overhead S-type) — motorised overhead motor drive in universal W-housing with split-housing service access

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

WPWDS universal cast iron worm gearbox structure

■ Universal W-Body Housing
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.
■ Worm Shaft
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.
■ Worm Wheel
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 & Seal
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.
■ Oil System
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.
■ Foot-Mount Base
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

■ D-IEC Flange (S-Overhead) + Universal W-Body: Motorised Overhead Drive in Any Orientation

WPWDS integrates D-type IEC motor flange in S-type (overhead) input position with WPW universal body — providing direct overhead motor coupling in all 5 shaft direction configurations.

■ D-Split Housing for Elevated Service Access

D-split cover removal allows worm wheel inspection without crane access — motor stays mounted, driven shaft stays connected. Critical safety advantage for elevated overhead motor drive installations.

■ S-Overhead IEC Flange — Rated for Cantilevered Motor Weight

The WPWDS IEC flange is rated for cantilevered motor mounting in the overhead S-type position across all standard IEC motor frames within the size range.

■ 5 Shaft Direction Configurations Available

All 5 shaft direction configurations (A–E) available for WPWDS with D-IEC S-overhead flange. Full universal orientation coverage with motorised overhead input.

■ Full WP Ratio Range + Maximum Output Torques

1/5–1/60 in all orientations, output torques up to 4,796 Nm at size 250 — full WP performance in the motorised overhead universal configuration.

■ Anti-Corrosion Coating — Elevated Environment Grade

Epoxy/polyurethane coating for the condensation, outdoor/indoor boundary exposure, and chemical vapour environments common at elevated overhead drive positions.

Industry Applications — WPWDS

WP universal speed cast iron worm gearboxes

Motorised Overhead Universal Process Drives

Process plant engineers standardising on motorised overhead IEC motor drives across diverse equipment orientations use the WPWDS as their single motorised S-input universal product.

OEM Overhead Motor Universal Platform

OEM machine builders with IEC overhead motor requirements in multiple machine orientations specify the WPWDS as their motorised S-input universal gearbox platform.

Elevated Plant — Motorised Universal Standard

Elevated plant installations with IEC-motored overhead drives in multiple positions use the WPWDS for standardised motorised overhead drive maintenance and procurement.

Chemical & Process Equipment — Overhead IEC Universal

Chemical and process plant equipment with overhead IEC motor mounting in diverse orientations uses the WPWDS for their motorised overhead drive specification.

Maintenance Fleet — Motorised S-Input Universal

Industrial maintenance departments managing motorised overhead drives across diverse equipment orientations standardise on WPWDS for maximum procurement and service simplification.

Why Choose WPWDS — Competitive Comparison

Feature Ever-power WPWDS Alternatives
Motor Mounting ✓ D-IEC flange S-overhead — direct Coupling + overhead adaptor required
Universal Housing ✓ 5-direction W-body — all positions Orientation-specific S-type housing
Elevated Service ✓ D-split — cover off, no crane Full gearbox removal at height
Spare Parts ✓ One SKU for all overhead orientations + IEC Multiple models per orientation
IEC Motor Range ✓ Full M8–M16 range Same — single orientation housing
Certification ✓ CE + ISO 9001 all orientations Per-orientation certification

Quality Control & Certifications

Ever-power manufacturing facility

✎ ISO 9001:2000 Certified

Every WPWDS 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 WPWDS

Ever-power precision machining

★ 20+ Years WPW Universal Series Production
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.
★ CNC Precision Machining — All 5 Shaft Directions
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.
★ Global Export Experience
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.
★ OEM Custom Capability
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.
★ Technical Application Support
Our application engineers provide WPW gearbox selection, load calculation, shaft direction selection, oil specification, and installation support. Email [email protected] with your application data.
★ WPW Series Complete: From WPW to WPWDKV
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

★★★★★

“WPWDS on our elevated overhead IEC motor drives. D-split means our maintenance team uses a platform to remove the cover — not a crane to lower the gearbox. This safety improvement alone justified the specification. Universal body covers all our overhead drive positions.”

Colin MacPherson — Elevated Process Engineering Pty Ltd
Australia 🇦🇺
★★★★★

“WPWDS for our overhead motorised platform drives. S-input D-IEC flange in universal body covers all our elevated drive positions. Split housing for in-situ service at height. One product, all positions. Excellent practical engineering solution.”

Karin Andersen — Nordisk Procesudstyr A/S
Denmark 🇩🇰
★★★★★

“WPWDS drives our overhead IEC motor drives across multiple plant positions. Elevated mounting with overhead IEC motor is our plant standard. Universal body covers all drive positions from one product. Cast iron durability in our industrial environment is consistently excellent.”

Raj Kumar — Plant Engineering Pvt Ltd
India 🇮🇳
4/5 ★★★★

“WPWDS overhead IEC universal on our elevated processing drives. Motorised overhead configuration + universal body in one standard catalogue unit. Practical engineering product for multi-orientation elevated drives. Quality consistent across orders.”

Oscar Fernandez — Ingenieria Industrial SA
Spain 🇪🇸

Frequently Asked Questions — WPWDS

▶ How is the WPWDS installed at an elevated drive station?
Mount the WPWDS base to the mounting structure. The D-type IEC flange faces upward (S-orientation). Lower the motor from above or raise it from below onto the flange. Install flange bolts. Connect driven machine to output shaft. Fill oil per orientation-specific quantities from the WPWDS installation sheet.
▶ What is the maximum motor weight for the WPWDS S-overhead IEC flange?
Maximum cantilevered motor weight is specified per size in the WPWDS flange load table. For size 40–75: typically up to 15 kg standard motors. For size 110–175: up to 60 kg. For size 200–250: up to 130 kg. For motors above the rated weight for the flange size, install an overhead motor support stand.
▶ Is there a hollow bore version of the WPWDS?
Yes — the WPWDKS adds K-type hollow bore output to the WPWDS D-IEC S-overhead + universal body. See the WPWDKS product entry.
▶ Can the WPWDS be serviced with the motor in position?
Yes. The D-split cover is removed without disturbing the overhead motor. With the motor mounted on the S-overhead IEC flange, remove the housing cover bolts and remove the cover (lower half in standard S-overhead orientation). Both the worm wheel and its bearings are then accessible without motor removal.
▶ What WPWDS size is needed for a 1.5 kW motor at 1/30 ratio?
For 1.5 kW input at 1/30 ratio: check the WPWDS table for the size where input power ≥ 1.5 kW at 1/30. Size 90 allows 0.62–6.98 kW (ratio-dependent), and at 1/30 typically accommodates 1.5 kW. Verify the output torque at your specific application load and apply the service factor for your drive type.

Get Your WPWDS 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 WPWDS to your exact specification. Contact our engineering team — we respond within 24 hours.

✓ OEM & Distributor partnerships welcome ✓ Custom configurations available ✓ Global shipping