ZF 0630.532.187 V-RING | OEM Genuine Part

Overview

The ZF 0630.532.187 V-RING is a critical sealing component designed for high-stress environments within heavy-duty construction machinery transmissions. This OEM genuine part functions as a rotary shaft seal, preventing lubricant migration and blocking external contaminants from entering the gearbox assembly. Positioned at the input or output shaft interface, the V-Ring (SKU: 0630.532.187) ensures hydraulic pressure integrity and reduces friction during high-torque operations. Its flexible lip design compensates for minor shaft misalignment, making it indispensable for maintaining transmission efficiency in excavators, loaders, and graders.

Symptoms of Failure

• Transmission oil leaks at shaft seals: A worn 0630.532.187 V-Ring often causes visible oil seepage around the shaft housing, leading to low fluid levels and overheating.
• Gear slipping under load: When the V-Ring fails, pressure loss in the hydraulic circuit can cause erratic clutch engagement, resulting in delayed or slipping gear shifts.
• Contaminated transmission fluid: A degraded seal allows dirt and moisture ingress, turning the oil dark or milky and accelerating internal wear.
• Whining or grinding noises: Loss of lubrication from a failed V-Ring increases metal-on-metal contact, producing audible distress from the transmission housing.

Technical Specifications

Compatibility

This V-Ring is engineered for ZF WG-series transmissions commonly deployed in construction machinery. It is a direct fit for the WG180, WG200, and WG250 models, as well as select variants of the WG310 series. The 0630.532.187 seal is often replaced alongside the 4143101009 HOUSING and 4143301025 HOUSING during a full shaft rebuild. For optimal sealing, pair it with a new 0634313603 O-RING and verify the 4475280018 SCREW PLUG torque specifications to prevent future leaks.

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