ZF 4616.307.012 SPUR GEAR for WG65 | OEM Genuine Part

Overview

The ZF 4616.307.012 SPUR GEAR is a critical power transmission component engineered for the WG 65 Series industrial transmission. This OEM genuine spur gear precisely transfers rotational force and torque between parallel shafts within the gear train, ensuring smooth engagement and load distribution under heavy-duty cycles. The SKU 4616.307.012 sits directly in the intermediate shaft assembly, where it meshes with adjacent gears to maintain optimal gear ratio and driveline efficiency. Constructed from case-hardened alloy steel, this gear is designed to withstand high contact stresses and continuous operation in demanding material handling and construction equipment.

Symptoms of Failure

• Whining or howling noise during operation: As the spur gear teeth wear unevenly or develop pitting, the meshing surfaces generate a distinct high-pitched whine that increases with load, often indicating surface fatigue or spalling.
• Vibration and gear chatter under load: Worn tooth profiles or backlash increase causes noticeable vibration through the transmission housing, especially during acceleration or deceleration, signaling imminent gear failure.
• Metal particles in transmission oil: Flaking or chipping of the gear teeth produces metallic debris in the lubricant, visible during oil changes or as sludge on the magnetic drain plug, directly linked to spur gear degradation.
• Intermittent power loss or gear slippage: Advanced wear reduces tooth contact area, leading to momentary loss of torque transfer under heavy load, often misdiagnosed as clutch or hydraulic issues.

Technical Specifications

Compatibility

This 4616.307.012 spur gear is specifically designed for the ZF WG 65 Series transmission family. Based on its gear geometry and spline configuration, it is also compatible with the following ZF models that share the same intermediate shaft layout: WG180, WG200, and WG250. Always verify tooth count and bore dimensions against your existing gear before installation. For complete assembly integrity, this gear is installed alongside the 4616105402 OUTPUT shaft, the 4005303005 OUTPUT FLANGE, and the 4616101119 TRANSMISSION HOUSING. Secure mounting requires the 0636011038 HEXAGON SCREW for proper torque retention.

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