SKF 4931 Power Take Off (PTO) Shift Shaft Seal

SKF PTO Shift Shaft Seal 4931

SKF 4931 is a Power Take Off (PTO) shift shaft seal built for driveline and axle sealing applications where fluid retention and contamination control matter. With a 0.500 shaft diameter, 0.879 outside diameter, and 0.250 width, this seal is sized for precise fitment in PTO shift shaft service.

• Nitrile sealing surface for dependable sealing performance in driveline environments
• 0.500 shaft diameter for the specified PTO shift shaft size
• 0.879 outside diameter for controlled housing fit
• 0.250 width for compact installation dimensions
• SKF engineered seal design based on long-running shaft seal development

Application Details

SKF 4931 is used in PTO shift shaft sealing locations to help retain lubricants and block dirt, dust, and other contaminants from entering the assembly. It is a direct-service sealing component for driveline and axle maintenance, including applications found in agricultural and industrial equipment such as John Deere and Case IH systems where PTO shift shaft sealing is required. This part cross-references 14584931 and 216562 for the same application.

What This Seal Helps Address

• Oil seepage at the PTO shift shaft
• Contamination entering the shift shaft housing
• Seal wear from age, heat, and fluid exposure
• Loss of lubricant around driveline sealing points
• Service issues tied to damaged or hardened shaft seals

Installation Notes

Verify shaft diameter, housing bore, and seal orientation before installation. Inspect the shaft surface for grooves or corrosion, and clean the sealing area thoroughly so the nitrile lip can seat correctly. Use proper installation tools to avoid distorting the seal during placement.

Quality Assurance

SKF has a long history in shaft seal engineering, including the development of the first integrated shaft seal in 1928. SKF 4931 is manufactured to specific design requirements using premium materials for the intended operating environment, with a focus on long service life and reliable sealing performance.