ZF 0635.300.117 NEEDLE CAGE for WG65 | OEM Genuine Part

Overview

The ZF 0635.300.117 NEEDLE CAGE is a precision-engineered component designed for the WG 65 Series transmission family. This OEM genuine part functions as a critical rolling element bearing assembly, guiding and retaining needle rollers within the planetary gear set to reduce friction and support radial loads during torque transfer. Positioned inside the transmission housing, the needle cage ensures smooth rotational motion between shafts and gears, directly influencing shift quality and power delivery efficiency. The SKU 0635.300.117 is manufactured to ZF’s exacting tolerances, making it a direct replacement for worn units in heavy-duty industrial applications.

Symptoms of Failure

• Gear slipping under load: A worn needle cage allows excessive play in the planetary gear assembly, causing intermittent loss of torque transfer and erratic shifting behavior.
• Metallic grinding or whining noise: When the cage fails, needle rollers can misalign or break, producing audible metallic contact within the transmission during operation.
• Oil contamination with metallic debris: Degraded needle cages shed fine metal particles into the transmission fluid, often visible during oil changes or filter inspections.
• Delayed engagement or harsh shifting: Increased friction from a damaged cage disrupts hydraulic pressure balance, leading to sluggish gear engagement or abrupt clutch application.

Technical Specifications

Compatibility

This needle cage is specifically engineered for the ZF WG 65 Series, including models such as WG65, WG80, WG120, WG150, WG180, and WG200. It is also found in select variants of the ZF Ecomat and Ecolife series where planetary gear sets share the same cage dimensions. Always verify the part number 0635.300.117 against your transmission’s parts catalog before installation. For proper assembly, ensure the TRANSMISSION HOUSING is free of wear and that all fasteners—including the HEXAGON SCREW, HEXAGON SCREW, and HEXAGON SCREW—are torqued to specification.

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