Forklift Driving hub

Forklift Driving Hub： Front & Rear Axle Wheel Hub Assemblies with Brake Drum

A forklift driving hub is the cast component that mounts the drive wheel to the axle shaft — it carries the wheel bearings, wheel studs, and brake drum as a single rotating assembly that transfers engine torque to the tire. When a driving hub fails, the wheel develops play, the brake drum runs out of true, and in severe cases the wheel studs shear off under load. Kingstream stocks replacement forklift driving hubs for Toyota, HELI, Hangcha, Komatsu, and TCM forklifts from 1.5 to 10 ton capacity. Every hub is dimensionally verified for bearing seat diameters, bolt circle, and runout before shipment.

Front vs Rear Driving Hubs

Forklift front axle driving hubs are splined or bolted directly to the drive axle shaft and transmit engine torque to the wheel. They are the most heavily loaded hub on the forklift because they carry not only the vehicle weight but also the torque reaction from acceleration and braking. The front hub typically integrates the brake drum mounting surface — the drum bolts to the back of the hub flange, and both rotate as a single unit. When replacing a front forklift drive hub, the brake drum is often replaced at the same time because a worn hub bearing seat allows the drum to run off-center, wearing the drum unevenly. Forklift rear axle steering hubs mount on the steering knuckle spindle and do not transmit drive torque — they carry only the rear vehicle weight and steering forces. However, rear hubs are subject to high side loads during tight turns, especially on forklifts operating in narrow aisles where the steer tires scrub at full lock. A 6-hole bolt pattern is common on Toyota 7FB and 8FD series forklift wheel hubs, while HELI and Hangcha models use various bolt circle diameters that must be matched exactly.

Signs Your Driving Hub Needs Replacement

A failing forklift driving hub produces progressive symptoms. The earliest sign is wheel bearing play — with the wheel jacked up, rocking the tire by hand reveals movement at the hub, indicating worn bearing seats that no longer hold the bearing races securely. A rumbling or grinding noise from the wheel area that increases with speed and changes pitch during turns suggests a bearing race that has spun inside the hub bore, wearing the bore oversize and destroying the press-fit interference. Broken or stripped wheel studs indicate the hub flange has been overloaded, often due to overtightening or impact damage — a hub with multiple damaged studs should be replaced rather than attempting to repair individual studs in a compromised flange. Brake pulsation felt through the pedal or chassis during braking, combined with visible runout on the brake drum, points to a forklift hub assembly where the drum mounting surface is no longer true. In severe cases, cracks radiating from the wheel stud holes or the hub-to-axle flange indicate fatigue that will lead to catastrophic hub separation if not replaced immediately.

Popular Driving Hub Cross-Reference

Need a hub not listed? Send us your model and OEM number for cross-reference to the correct forklift driving hub.

Quality Control at Kingstream

Every forklift driving hub we ship is measured for the critical dimensions that determine safe operation. Bearing seat bores are measured for diameter, roundness, and surface finish — an undersized bore crushes the bearing, an oversized bore allows the race to spin and destroy the housing. The hub flange runout is checked with a dial indicator to confirm the brake drum mounting surface and wheel mounting face run true — excessive runout causes brake pulsation and uneven tire wear. Wheel stud holes are checked with go/no-go gauges for thread pitch, diameter, and position relative to the bolt circle — a single mispositioned stud hole prevents the wheel from mounting. The axle shaft spline or bolt pattern is verified against the OEM drawing to ensure the hub mates correctly with the axle without forcing. For forklift hub assemblies with integrated brake drums, the drum inner diameter and roundness are measured. You receive a driving hub that runs true, mounts securely, and transfers torque without vibration — not one with a spun bearing seat that destroys a new bearing set within the first week of operation.

Wheel wobbling or brake pulsing? Send us your part numbers for a fast quote on forklift driving hubs. For other axle components, browse our complete forklift drive axle parts catalog.