WPA Single Speed Cast Iron Worm Gearbox — WP Series

When conveyor systems, packaging lines, and material handling equipment demand precise, repeatable speed reduction with long service life, the WPA Single Speed Cast Iron Worm Gearbox delivers. Built on a standard foot-mount platform with horizontal input and output shafts, the WPA is the benchmark cast iron worm gearbox used across Australian manufacturing, agricultural machinery, and industrial processing equipment. Its solid integral cast iron housing (FC20+) provides superior rigidity and vibration damping under sustained loads up to 2,371 Nm, making it the workhorse choice when reliability over 50,000+ hours of operation is non-negotiable.

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■ Solid Integral FC20+ Cast Iron Housing

The WPA housing is precision-machined from high-tensile FC20 grey cast iron, providing 3× the vibration damping of aluminium housings. This rugged construction absorbs shock loads in conveyor and agricultural applications, reducing bearing wear and extending service life beyond 50,000 hours.

■ Precision-Ground Worm Shaft & Bronze Wheel

The carburised and hardened steel worm shaft (55–60 HRC surface) meshes with a tin-bronze worm wheel, delivering 60–90% transmission efficiency across the 1/5–1/60 ratio range with noise levels below 68 dB(A) at rated load.

■ Foot-Mount Simplicity — 4-Bolt Base

The WPA’s standard 4-bolt base plate (B3 orientation) drops directly into existing conveyor frame mounting patterns, eliminating custom brackets. B6, B7, B8 orientations available for angled installations.

■ Bilateral Input Shaft — Flexible Motor Positioning

The WPA accepts motor connections from either side of the input shaft, giving installers left- or right-hand motor positioning without purchasing a separate mirrored unit.

■ Oil Gauge & Drain Plug Standard

Integrated oil level gauge and bottom drain plug simplify routine oil changes (every 2,500 hours), reducing planned maintenance downtime.

■ Full Size Range: 40–250 Centre Distance

Available in 12 standard sizes from centre distance 40 mm to 250 mm, covering input powers from 0.12 kW to 33 kW and output torques from 4 Nm to 2,371 Nm.

⚊ Conveyor & Material Handling

Drives belt conveyors, chain conveyors, and screw conveyors in mining, quarrying, and logistics distribution centres. The WPA foot-mount design simplifies installation on standard conveyor frames.

☷ Agricultural Machinery

Powers grain augers, seed drills, irrigation pump drives, and harvester feed mechanisms. Cast iron durability withstands the vibration and dust of outdoor Australian farm operations year-round.

⚔ Food & Beverage Processing

Drives mixing paddles, filling machine indexers, and bottling conveyor lines where the WPA’s smooth operation and low noise floor are critical for product quality consistency.

⚒ Packaging Automation

Provides accurate speed reduction for carton forming, wrapping machine drives, and palletiser turntables where ratio precision from 1/5 to 1/60 covers the full packaging speed range.

⚙ Pump & Fan Drives

Reduces high-speed motor output to pump shaft speed in water treatment, irrigation, and HVAC systems — delivering reliable continuous operation at rated efficiency.

✎ ISO 9001:2000 Certified

We hold ISO 9001:2000 International Quality System Certification — the first in our industry category to achieve this standard. Every WPA 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.

“We replaced six worn-out competitor gearboxes on our quarry conveyor with WPA-100 units. After 18 months of 24/7 operation in a dusty, high-vibration environment, all six are running perfectly. The cast iron housings show zero cracks — incredibly robust for the price.”

“The WPA’s bilateral input shaft was exactly what we needed for our compact conveyor redesign. Motor left or right in the same unit — saved us weeks of custom bracket fabrication. Transmission efficiency matches the specification sheet precisely.”

“Running WPA-80 units on our sugar cane conveyor drives since 2022. Impressive durability in the wet, corrosive sugarcane processing environment. We did add an external shaft seal upgrade, but the core gearbox performance is excellent.”

“Used WPA-120 in our spice grinding conveyor line. The low noise level surprised our quality engineers — they expected more noise from cast iron but the precision worm mesh is very smooth. Highly recommended for food factory environments.”