WPKZ Single Speed Cast Iron Worm Reducer — WP Series

Vessel nozzle drives that require a coupling-free shaft connection face a specific engineering challenge: the Z-type flange mounts on the vessel, but the driven shaft needs to enter without a coupling. The WPKZ resolves this by combining the Z-type circular flange housing with a K-type hollow bore output. Mount the Z-flange to the vessel nozzle, insert the driven shaft through the hollow bore, key it, and the drive is complete — no coupling at the vessel interface.

This is the standard architecture for vessel-mounted shaft drives in food processing, pharmaceutical, and chemical industries where coupling hardware at the vessel nozzle level creates contamination risk or complicates validation documentation.

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■ K+Z: Flange Mount + Coupling-Free Shaft Output

The only WP reducer that combines vessel nozzle flange mounting with hollow bore shaft insertion. No coupling hardware at the vessel nozzle level — the shaft passes through the K-bore directly.

■ Z-Type 360° Rotational Positioning

Rotate the circular flange housing to any angular position during installation — directing the K-bore to precisely align with the driven shaft axis before bolting to the vessel nozzle.

■ Hollow Bore 22.8–64.4 mm Across 7 Sizes

Bore diameters from 22.8 mm (size 50) to 64.4 mm (size 135) cover the driven shaft diameters typical of process vessel agitator and conveyor shaft applications.

■ T-Type Top-Entry Input for Overhead Motor

Input shaft enters from above, positioning the motor directly overhead the vessel nozzle — the standard arrangement for vessel-top drive installations in process industries.

■ FC20+ Cast Iron for CIP Environments

Z-flange mounting at vessel nozzle level exposes the housing to cleaning-in-place chemicals and steam. FC20+ cast iron provides better chemical and moisture resistance than aluminium.

■ No Coupling Hardware at Vessel Interface

Eliminating the output coupling removes one contamination risk point, one lubrication maintenance point, and one fatigue failure mode from the vessel nozzle drive — essential in GMP-regulated production environments.

⚔ Food Processing Vessel Shaft Drives

Z-flange to vessel nozzle, shaft through K-bore — no coupling in the product zone. Clean drive architecture that simplifies GMP compliance documentation and reduces contamination risk.

☵ Pharmaceutical Mixer Shaft Drives

Coupling-free vessel nozzle drive for bioreactors and mixing vessels. K-bore eliminates the shaft coupling from the validated vessel boundary — simplifying change control and periodic inspection protocols.

⚒ Chemical Process Vessel Agitators

In chemical environments where coupling hardware requires compatible materials, WPKZ eliminates the coupling entirely — no compatibility verification required for the drive-to-shaft interface.

☷ Beverage Tank Discharge Drives

Z-flange mount to tank outlet nozzle with hollow bore for the discharge shaft — compact, coupling-free drive that contributes to the clean-zone design of beverage processing equipment.

■ ISO 9001:2000 Certified Production

Every unit is manufactured under ISO 9001:2000 quality management. Raw material inspection, in-process checks, and final assembly testing are fully documented and traceable to each unit’s serial number.

■ Маркировка CE — Директива ЕС о машиностроении 2006/42/EC

Полное соответствие стандартам CE подтверждает приверженность европейским стандартам безопасности и проектирования механических систем передачи энергии, что способствует экспорту на рынки ЕС, Великобритании, Австралии и Новой Зеландии.

■ Предпродажные испытания: шум, герметичность, крутящий момент

Every unit passes three tests: noise below 68 dB(A) at rated load, 30-minute pressurisation leak test, and output torque within ±5% of rated. Non-conforming units are reworked — not shipped.

■ Сертификация материалов FC20+

Housing castings are verified by mill certificates for FC20 grade: minimum 220 MPa tensile strength, 160–200 HB hardness. Ultrasonic defect testing on size 135 and above.

“WPKZ-80 on our vessel nozzle agitator shaft drives. Z-flange to nozzle, shaft through the K-bore — no coupling at the vessel flange level. Clean installation, no coupling contamination risk.”

“Used WPKZ-100 on our column-mounted shaft drives. Z-flange to column, driven shaft through the hollow bore. Rotating Z-mount to align the shaft precisely took two minutes — no bracket fabrication.”

“WPKZ on our food processing vessel drives. Shaft inserts through K-bore, Z-flange on nozzle — eliminates coupling hardware entirely. Very clean drive architecture for food plant requirements.”

“Good K+Z combination for vessel shaft applications. WPKZ-70 working well on our small process vessels. Would welcome a smaller size 40 mm for very compact vessel nozzle installations.”