Overview
The SKF CR 54972 oil seal is a Chicago Rawhide (SKF) precision rotary shaft seal engineered for maximum performance in mechanical power transmission and industrial automation. This solid, single-lip design uses a proprietary wave lip geometry that reduces operating heat and friction while delivering the industry’s highest pump rate. The SKF CR 54972 is a drop-in solution for gearboxes, speed reducers, motors, pumps, wheel ends, and rollers.
Key Features
- Wave Lip Design: Sinusoidal motion generates up to 30% less heat and 20% less friction, extending seal life and reducing energy loss
- Robust Construction: Metal case with nitrile rubber (NBR) lip material, garter spring, and carbon steel components
- Easy Installation: Firm and accurate fit in the housing bore for simplified assembly
- Dual Lubrication Capability: Compatible with both oil and grease, offering application flexibility
- Wide Operating Range: Operating temperature range of -40 to 210 °F with 10 psi pressure tolerance
Technical Specifications
Precise dimensional and material specifications ensure compatibility and reliable performance:
- Shaft Diameter: 5.500 inches (139.7 mm)
- Outside Diameter: 6.750 inches (171.45 mm)
- Overall Width: 0.500 inches (12.7 mm)
- Seal Type: Single lip, rotary shaft seal (radial shaft seal)
- Design Type: CRWH1
- Lip Material: Nitrile Rubber (NBR)
- Case Material: Steel with metal inner case
- Spring Type: Garter spring (carbon steel)
- Installation: Housing press fit
- Weight: 0.70 lbs
- UPC: 085311038171
Typical Applications
The SKF CR 54972 is engineered for demanding industrial and mobile equipment:
- Gearboxes and speed reducers
- Transmissions and drive systems
- Motors and electric machinery
- Pumps and hydraulic systems
- Wheel ends and vehicle drivetrains
- Rollers and material handling equipment
Compatibility & Replacements
Compatible With
- Standard housing bore sizes from 6.750 inches (171.45 mm)
- Shafts with 5.500 inches (139.7 mm) diameter
- Oil or grease-lubricated systems
- Industrial gearboxes and speed reducers
- Motor and pump assemblies requiring rotary shaft sealing
Replaces / Drop-In Replacement For
- SKF old part number 54990
- Equivalent Chicago Rawhide CR seals with CRWH1 wave lip design
Works With
- Compatible wear sleeves: 99549, 99550, 99859
- Compatible V-Rings: 401400, 401401, 401402, 401404, 401405, 401406, 401408
- Standard industrial sealing and bearing systems
- Oil and grease lubrication systems
