WPWEKO Double Speed Cast Iron Worm Gearbox — WP Series

Ultra-slow vertical hollow bore shaft drives — applications where the driven shaft passes through the hollow bore output in the vertical direction at extreme reduction ratios on a universal platform — represent the highest-demand slow drive specification. The WPWEKO Double Speed Cast Iron Worm Gearbox delivers this: WPW-series universal body, K-type hollow bore output in the vertical (O-type upward) orientation, and double-stage worm reduction (1/200–1/900). The unique solution for vertical shaft-through hollow bore agitator drives at extreme ratios on a universal platform.

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■ Universal Body + K Hollow Output (Vertical O-Type) + Double-Stage: Unique Hollow Bore Vertical Platform

The WPWEKO is a unique combination in the WP series: K-type hollow bore output in the vertical upward (O-type) orientation, on a universal WPW body, with double-stage worm reduction. This combination is not available in orientation-specific WPE variants.

■ K Hollow Bore in Vertical Direction — Shaft Passes Through Vertically

The WPWEKO hollow output bore is oriented vertically upward. The driven shaft inserts from below, passes through the bore, and is secured by keyway — the hollow-shaft vertical agitator configuration.

■ O-Rated Vertical Output Bearings for Hollow Bore Configuration

The WPWEKO output shaft bearing arrangement is rated for the axial loads created by the hanging weight of the driven shaft assembly below the hollow bore in the vertical upward orientation.

■ Full Double-Stage Torque Through Vertical Hollow Bore

WPWEKO K-type hollow bore output is rated for full double-stage output torques — up to 6,050 Nm — in the vertical orientation. The hollow bore transmits the full rated torque via the keyway connection.

■ Universal W-Body — 5 Input Orientations for Vertical Output

The WPW-series universal body provides 5 input shaft direction configurations even with vertical O-type output — allowing the motor/input shaft to be positioned in the most practical direction for each specific installation.

■ Torque Arm Boss Compatible with All Shaft-Mount Applications

For any WPWEKO shaft-mount application where additional housing restraint beyond the foot-mount is needed, the WPW-series torque arm boss provides the anchor point across all 5 shaft direction configurations.

☵ Hollow Shaft Top-Entry Ultra-Slow Agitators

Vertical agitators where the agitator shaft passes through the hollow output bore at very slow rotation (1–5 RPM) represent the WPWEKO’s primary application — combining vertical output direction, hollow bore shaft-through, and double-stage extreme ratio.

⚒ Universal Platform Hollow Bore Vertical Drives

Process equipment platforms requiring hollow bore vertical output drives across multiple installation orientations use the WPWEKO’s universal W-body to cover all configurations with one product.

⚔ Chemical Vessel Hollow Shaft Agitators — Universal Fleet

Chemical vessels with hollow shaft agitator connections and top-entry vertical drives across a diversified vessel fleet use the WPWEKO for platform standardisation.

⚊ Precision Slow Vertical Positioning — Hollow Through-Shaft

Precision positioning equipment requiring very slow vertical rotation with a hollow bore output for a central positioning shaft uses the WPWEKO’s combination of extreme ratio and hollow vertical output.

⚛ Bioprocess & Pharmaceutical Hollow Shaft Bioreactors

Bioreactors with hollow shaft agitators at slow rotation (1–3 RPM) in various installation orientations use the WPWEKO for hollow bore vertical output and universal installation support.

✎ ISO 9001:2000 Certified

Every WPWEKO 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.

“WPWEKO on our hollow shaft bioreactor agitators. Hollow bore oriented vertically upward allows the agitator shaft to pass completely through the gearbox — our design requirement for the hollow shaft aeration system. At 2 RPM from the double-stage, agitation is precisely controlled. Excellent and unique product.”

“WPWEKO for our research bioreactor hollow shaft agitator drives. Vertical hollow bore output at 1/500 ratio is exactly our bioprocess requirement. Universal body handles our diverse bioreactor orientations. This combination was previously achievable only with custom-engineered drives — now it is a standard catalogue product.”

“WPWEKO specified for our pharmaceutical hollow shaft bioreactor drives. K-hollow + O-vertical + double-stage combination in a standard catalogue product simplified our validation process significantly. Cast iron housing quality is excellent. Dimensional consistency across orders is perfect.”

“WPWEKO on our hollow shaft fermentation vessel agitators. The unique hollow bore vertical output at extreme ratio is the key product feature for our application. Universal body is a bonus for our diverse vessel range. Very good quality for a highly specialised application.”