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70989 XCMG GR2605 motor grader oil seal
- Model：70533
- Type：Tapered Roller Bearing (Assembly/Set)
- Brand：DANA-GRAZIANO
- Material：High-carbon Chromium Bearing Steel (GCr15)
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70989 XCMG GR2605 motor grader oil seal
70989 is a TC type skeleton oil seal (double lip with garter spring), a rotary shaft seal designed for heavy-duty construction machinery, axles and transmission systems. Its core function is to prevent leakage of gear oil and hydraulic oil from gearboxes, drive axles and wheel reducers, while blocking external dust, mud and water from entering bearing and gear chambers. Constructed with Nitrile Rubber (NBR) and a metal skeleton, the sealing lip features a self-tightening spring, ensuring stable sealing, wear resistance and anti-aging properties under high-speed rotation, heavy-duty shock and oil-immersed harsh conditions.
Technical Parameters
- Model：70989
- Type：TC Skeleton Oil Seal (double lip, with garter spring, rubber covered)
- Material：Body: Nitrile Rubber (NBR); Skeleton: Cold-rolled Steel; Spring: Stainless Steel
- Dimensions：ID 38mm × OD 75.2mm × Width 8mm
- Shaft Application：38mm
- Operating Temperature：-30℃ ～ +120℃
- Max. Speed：≤3000rpm
- Pressure Range：≤0.05MPa (non-pressure/slight pressure rotary seal)
- Surface Treatment：Skeleton anti-rust, rubber vulcanized integrally
- Features：Mineral oil resistant, wear-resistant, anti-aging, self-tightening seal, stable installation
Application Scenarios
Suitable for drive axle shafts, wheel reducers, gearbox input/output shafts, differentials of loaders, graders, forklifts, rollers, heavy-duty trucks.
- Seals rotating shafts to prevent lubricant leakage
- Adapts to outdoor conditions: oil immersion, dust, muddy water, continuous vibration
- Matches mainstream axle/gearbox brands: DANA, ZF, Meritor, etc.
Common Faults & Troubleshooting
- Oil Leakage：Caused by lip wear, hardening, spring failure or shaft journal scratches. Replace 70989 seal, inspect shaft surface finish, repair journal if necessary.
- Premature Aging：Rubber embrittlement due to high temperature or inferior oil. Replace seal and use original specification lubricant.
- Lip Turning/Breakage：Improper installation, shaft burrs or embedded contaminants. Clean housing, deburr shaft, press seal correctly.
- Abnormal Noise/Increased Wear：Dry friction, lack of lubrication or foreign matter ingress. Check lubrication, replace seal and clean cavity.
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