ZF 0750.119.977 ROLLER SET | OEM Genuine Part

Overview

The ZF 0750.119.977 ROLLER SET is a precision-engineered OEM genuine component designed to reduce friction and support rotating elements within heavy-duty ZF transmissions. This roller set sits directly within the planetary gear assembly, ensuring smooth torque transfer and load distribution across the gear train. As a critical wear item, the SKU 0750.119.977 is manufactured to exacting ZF tolerances, making it essential for maintaining transmission efficiency in construction machinery. When paired with a robust HOUSING (part 4108101174) or a compatible HOUSING (part 4108201298), this roller set ensures reliable operation under extreme loads.

Symptoms of Failure

• Gear slipping under load: Worn rollers lose their ability to maintain proper gear engagement, causing intermittent slipping during excavation or lifting operations.
• Metallic grinding noise from transmission: As the roller set degrades, metal-on-metal contact produces a distinct grinding sound, particularly during gear shifts.
• Oil contamination with metallic debris: Failed rollers shed fine metal particles into the transmission fluid, often visible during routine oil changes.
• Increased operating temperature: Excessive friction from a failing roller set generates heat, potentially triggering thermal warnings on the equipment dashboard.

Technical Specifications

Compatibility

This roller set is engineered for use in ZF WG180, WG200, and WG211 series transmissions commonly found in wheel loaders, excavators, and telehandlers. It is also compatible with select ZF 4WG-180 and 4WG-200 models. For accurate fitment, always verify the transmission serial number against the OEM parts catalog. The roller set works in conjunction with the OIL LEVEL GAGE (part 0501225852) for fluid monitoring and the SEALING RING (part 0501325471) to prevent contamination.

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