WPO Single Speed Cast Iron Worm Gearbox — WP Series

Vertical output drives — where the gearbox output shaft points straight up — are required in mixing vessels, agitator systems, screw conveyors with vertical discharge, and turntable positioning systems. Adapting a horizontal-output gearbox to a vertical output application requires a 90° bevel gear stage or an external right-angle attachment, adding cost and maintenance complexity. The WPO Single Speed Cast Iron Worm Gearbox is purpose-built with vertical upward output (O-type), delivering the required geometry intrinsically without any additional components. Engineers who build mixing tanks, processing vessels, and vertical conveyor systems use the WPO as their standard vertical-output drive specification.

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■ O-Type Vertical Upward Output — Purpose-Built Engineering

The WPO output shaft exits vertically upward from the housing, with bearing arrangements, oil seals, and internal oil distribution specifically designed for this orientation. The output shaft is rated for the full specified radial and axial loads in the vertical position.

■ Bilateral Horizontal Input Shaft — Standard Motor Connection

The WPO input shaft is horizontal and bilateral, accepting standard motor coupling from left or right in the standard horizontal orientation, while the output maintains the vertical axis.

■ Output Shaft Oil Seal Rated for Vertical Load

Vertical output shaft oil seals experience different pressure distributions than horizontal shaft seals. The WPO uses upgraded oil seals specified for the hydrostatic head pressure in vertical operation.

■ Multiple Shaft Direction Options (ABCDEF)

The WPO catalogue lists 6 shaft direction configurations (A, B, C, D, E, F variants) covering left-input/right-input and different output shaft angular positions, giving designers maximum layout flexibility.

■ Rugged Foot Mount Base for Vessel-Top Mounting

The WPO 4-bolt base is dimensioned to mount directly on standard vessel flanges and head plates used in chemical and food processing vessel construction.

■ Full WP-Series Size Range: 40–250

Available in all 12 standard sizes, providing vertical output torques from 17 Nm (size 40, ratio 1/5) to 2,371 Nm (size 250, ratio 1/60) for the complete range of vertical mixing and conveying applications.

☵ Mixing Vessel & Agitator Systems

The WPO is the standard gearbox for top-mounted agitators and mixers in the food, chemical, and pharmaceutical industries. Its vertical upward output shaft connects directly to the agitator shaft, creating the cleanest possible sealed drive interface.

⚔ Vertical Screw Conveyor Drives

Grain elevators, vertical screw conveyors, and silo discharge screws require a vertical output shaft. The WPO provides this output orientation with the full 1/5–1/60 ratio range required by these applications.

⚊ Processing Tank Top-Entry Drives

Reactors, crystallisers, and fermentation vessels with top-entry agitator shafts are served by the WPO, which mounts on the vessel head and connects the agitator shaft vertically.

⚒ Turntable & Rotary Platform Drives

Assembly line turntables and rotary indexing platforms use the WPO’s vertical output to drive the central pivot shaft, providing the most direct and efficient drive path for these applications.

⚛ Marine & Offshore Deck Machinery

Marine deck winches and capstans often require vertical output shaft configurations to connect to deck equipment. The WPO’s robust cast iron housing handles the marine corrosion environment better than aluminium alternatives.

✎ ISO 9001:2000 Certified

We hold ISO 9001:2000 International Quality System Certification — the first in our industry category to achieve this standard. Every WPO is manufactured, assembled, and tested under this quality framework.

✎ CE Marking

Full CE marking confirms compliance with EU Machinery Directive 2006/42/EC requirements — covering safety, design standards, and manufacturing quality for mechanical power transmission equipment.

✎ Pre-Shipment Testing

Every unit undergoes: Noise test (below 68 dB(A) at rated load), Oil leak test (30-minute pressurisation), and Torque transmission test (output torque within ±5% of rated). Failed units are reworked — not shipped.

✎ FC20+ Material Certification

Housing castings are verified by material test certificates for FC20 grade (220 MPa minimum tensile strength). Hardness testing (160–200 HB) and ultrasonic testing for internal defects are performed on size 135 and above.

“Our mixing vessels have used WPO gearboxes for 15 years. The vertical output shaft mounts directly on our vessel head — the simplest and most reliable agitator drive arrangement we’ve found. Zero leaks from the vertical output seal even after years of continuous operation at elevated temperatures.”

“We specify WPO on all our reactor agitator systems. The purpose-built vertical output bearing arrangement gives us far better seal life than the improvised vertical adaptor solutions we tried before. Consistent quality and full catalogue availability — exactly what we need.”

“WPO-100 drives our fermentation vessel agitators. The cast iron housing and vertical output design handles the warm, humid brewery environment reliably. We’ve standardised on WPO across our entire brewing equipment range — 60+ vessels in the field.”

“WPO units on our large-format mixing tanks. The vertical output shaft simplicity is exactly right for our application. Very low maintenance over 3 years of operation. The only suggestion is a stainless steel output shaft option for severe chemical environments.”