WPDA Single Speed Cast Iron Worm Reducer — WP Series

Aligning a standard AC motor to a gearbox through a separate adaptor plate adds cost, introduces shaft misalignment risk, and wastes axial installation space. The WPDA solves this by integrating an IEC-standard motor flange directly into the gearbox housing. Drop your motor onto the flange, tighten four bolts, and the drive is complete — no coupling, no adaptor, no field alignment.

The D-type split housing adds an independent maintenance advantage: the top cover can be removed without disturbing motor or driven machine connections, enabling in-situ worm wheel inspection that solid-housing units cannot match. With output torques up to 3,025 Nm, the WPDA covers the full range of OEM machine building, pump station, and conveyor drive requirements.

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■ Integrated IEC Motor Flange — No Adaptor Required

Machined to IEC 72-1, accepting A02/Y-series motor flanges for frames 56–355 directly. Eliminates the adaptor plate SKU, removes one misalignment source, and reduces installation time by approximately 40% versus coupled configurations.

■ D-Type Split Housing — In-Situ Worm Wheel Access

The two-piece cast iron housing separates at the horizontal centreline. Remove the top cover in-place to inspect or replace the worm wheel without disconnecting the motor or the driven machine.

■ Output Torques from 4 Nm to 3,025 Nm

Size 40 delivers 4–20 Nm for small mechanism drives; size 250 reaches 850–3,025 Nm for heavy conveyor and mixer applications — all within the same WPDA housing design.

■ FC20+ Cast Iron — Superior Vibration Damping

The D-type housing retains the same FC20+ cast iron properties as the solid WPA, providing vibration damping 3× better than aluminium alternatives across the continuous duty cycle.

■ Sealed Air Vent — Prevents Pressure Build-Up

A top-mounted air vent with dust-exclusion filter equalises internal pressure during thermal cycling without allowing contaminant ingress — preventing oil leaks common in unvented housings after sustained operation.

■ Permanent Metal Nameplate — ISO 9001 Traceability

Every WPDA ships with a fixed metal nameplate: model, size, ratio, serial number, and manufacturing date — enabling full supply chain traceability for OEM and maintenance records.

⚒ OEM Machine Building

Machine builders specify the WPDA because the integrated IEC flange eliminates the motor adaptor from the bill of materials, reducing assembly time by up to 40% compared to gearbox-plus-adaptor configurations.

⚙ Pump Station Drives

Direct motor mounting eliminates shaft coupling misalignment — the leading cause of early bearing failure in pump stations. The WPDA keeps motor and reducer rigidly aligned throughout service life.

☷ Textile & Printing Machinery

Printing presses and textile winders require precise, repeatable speed. The WPDA’s integral flange maintains consistent alignment under the vibration inherent in high-speed web handling.

⚊ Automated Production Lines

On assembly lines where rapid motor-reducer swap-out is critical, the WPDA’s four-bolt flange reduces mean time to repair dramatically versus coupled units requiring shaft alignment on the factory floor.

■ Certifié ISO 9001:2000

Chaque unité est fabriquée selon la norme de gestion de la qualité ISO 9001:2000. L'inspection des matières premières, les contrôles en cours de production et les tests finaux sont tous documentés et traçables grâce au numéro de série de chaque unité.

Marquage CE — Directive européenne 2006/42/CE relative aux machines

La conformité totale aux normes CE confirme le respect des normes européennes de sécurité et de conception pour la transmission de puissance mécanique, favorisant ainsi l'exportation vers les marchés de l'UE, du Royaume-Uni, de l'Australie et de la Nouvelle-Zélande.

■ Tests avant expédition : bruit, fuite, couple

Chaque unité subit trois tests avant expédition : niveau sonore inférieur à 68 dB(A) à charge nominale, test d’étanchéité sous pression de 30 minutes et transmission du couple à ±5% de la valeur nominale. Les unités non conformes sont remises en état et ne sont pas expédiées.

■ Certification des matériaux FC20+

Les pièces moulées des carters sont vérifiées par des certificats d'usine pour la nuance FC20 : résistance à la traction minimale de 220 MPa, dureté de 160 à 200 HB. Un contrôle par ultrasons des défauts est effectué sur les pièces de taille 135 et supérieure.

“Standardised on WPDA-100 for all our conveyor upgrade projects. The IEC flange means motor swap in under 30 minutes on-site without alignment tools — critical in dusty, time-sensitive mine maintenance.”

“Packaging machine redesign eliminated adaptor plates and flexible couplings at every drive station by switching to WPDA. Assembly output increased by 15% due to faster build times.”

“WPDA drives our loom main shafts. Direct motor flange eliminated drive vibration we had with belt-driven reducers — fabric defect rate dropped noticeably.”

“Good build quality and easy IEC flange compatibility. D-split housing made our first inspection very fast — worm wheel showed minimal wear at 8,000 hours. Would appreciate more sizes between 135 and 155.”