ZF 0501.327.622 HUB | OEM Genuine Part

Overview

The ZF 0501.327.622 HUB is a critical rotating component engineered for the output or planetary gear assembly within heavy-duty construction machinery transmissions. This OEM genuine part, identified by SKU 0501.327.622, serves as the central mounting point for gear sets and bearings, ensuring precise torque transfer and axial alignment. When installed alongside the 4699101093 HOUSING and the 4699301175 HOUSING, it forms the structural core of the final drive section. The hub’s splined interface and hardened steel construction are designed to withstand high cyclic loads in excavators, wheel loaders, and graders.

Symptoms of Failure

• Excessive gear backlash or clunking during direction changes – A worn hub spline or bearing seat causes play in the planetary set, leading to delayed engagement and metallic noises.
• Transmission overheating near the output flange – A distorted hub creates uneven load distribution, increasing friction and fluid temperature beyond normal operating ranges.
• Oil contamination with metallic particles – Fretting wear on the hub’s mating surfaces sheds debris into the lubrication circuit, often visible during oil changes.
• Vibration at low speeds under load – Loss of concentricity in the hub induces cyclical stress on the 0634303936 O-RING and adjacent seals, accelerating fluid leaks.

Technical Specifications

Compatibility

This hub is primarily utilized in ZF WG180, WG200, and WG250 series powershift transmissions common in construction machinery. It also appears in select ZF 4WG-200 and 6WG-200 variants used in articulated dump trucks and crawler dozers. The part interfaces directly with the 4699301041 COVER to seal the planetary carrier assembly. For precise fitment, verify the spline count (typically 24-tooth) against your transmission’s service manual.

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