Part Number A73J4-32151 Forklift Part Steering Wheel Hub

Forklift Steering Wheel Hub A73J4-32151

The steering wheel hub is a precision-machined steel component that mounts to the steering knuckle spindle and carries the wheel bearings and wheel rim assembly on the rear steer axle of counterbalance forklifts. Part number A73J4-32151 is the OEM steering hub for select Toyota, HELI, Komatsu, and TCM forklifts in the 1-3 ton range. A worn hub causes loose steering feel, wheel bearing failure, uneven tire wear, steering wheel vibration, and compromised steering precision — all directly affecting operator safety during maneuvering in confined warehouse aisles and busy loading docks.

The hub is forged or cast from medium-carbon alloy steel, then precision-machined on the spindle bore, bearing races, and wheel mounting face. The inner and outer bearing bores are machined to precise tolerances for proper bearing preload and smooth rotation. The wheel stud holes or bolt holes are accurately positioned on the correct bolt circle diameter for the wheel rim. The hub face is machined flat for proper wheel-to-hub contact. The component is heat-treated for strength and wear resistance at the bearing and seal contact surfaces.

Designed for Toyota, HELI, Komatsu, TCM, Mitsubishi, and Nissan counterbalance forklifts in the 1-3 ton range with matching steering axle specifications. For fleet maintenance, this is a common replacement item during steering axle bearing service or when wheel play is detected. Installation requires wheel bearing replacement, proper bearing preload adjustment, and verification of the hub-to-knuckle clearance after assembly. Always replace the wheel seal and inspect the spindle for wear when replacing the hub.

Kingstream supplies OEM-grade steering components with dimensional inspection. Browse our forklift tires and wheels for steering hubs, wheel rims, bearings, and complete wheel assemblies. Worldwide shipping available.

Technical Specifications

• Part Number: A73J4-32151
• Product Type: Steering Wheel Hub
• Material: Forged/cast alloy steel, heat-treated
• Application: Rear steer axle / knuckle spindle

Compatible Forklift Models

Restore precise steering and eliminate wheel play. The A73J4-32151 steering wheel hub ships from stock with dimensional inspection. Worldwide delivery from Kingstream.