Product Description
Oil Seal
Frequently Asked Questions
Q: What is the BR 4757-000 oil seal designed for?
A: The BR 4757-000 is an oil seal engineered for Barrett electric lift truck assemblies. Oil seals prevent hydraulic fluid and grease from leaking out of rotating shafts and bearing housings while blocking external contaminants from entering sealed chambers.
Q: What is the bore size and material of the BR 4757-000?
A: The BR 4757-000 seal specifications including bore diameter, outside diameter, and width are engineered for a specific shaft or housing on Barrett electric lift trucks. Material composition typically includes a nitrile rubber lip and steel spring for dynamic sealing performance. Verify dimensions against your current seal or equipment manual.
Q: What fluids is the BR 4757-000 seal compatible with?
A: The BR 4757-000 is engineered for use with mineral hydraulic oils and greases common to electric lift truck hydraulic systems. Confirm your lift truck hydraulic fluid type matches the seal material specification before installation.
Q: How long does the BR 4757-000 seal remain effective in service?
A: Service life of the BR 4757-000 depends on operating hours, pressure cycles, and environmental exposure. Most hydraulic seals require replacement every 3 to 5 years or when visible leakage develops around the shaft. Inspect regularly for seeping fluid as an early replacement indicator.
Q: What symptoms indicate the BR 4757-000 seal needs replacement?
A: Signs of seal failure include visible oil or grease leakage around the sealed shaft, increased noise or vibration at that location, or contamination buildup on external surfaces. A failed seal should be replaced promptly to prevent damage to bearings and other internal components.