AC 927791

Frequently Asked Questions

Q: What is the AC 927791 retaining ring and what is its purpose?
A: The AC 927791 is a carbon steel Grade 8 retaining ring designed for electric lift truck bearing housings. It secures and positions bearing components within 3.938 inch diameter housings and maintains proper bearing preload and alignment.

Q: What are the specifications of the AC 927791?
A: OEM Part Number: AC 927791. Housing diameter: 3.938 inches. Material: Carbon steel per SAE J995, Grade 8 construction. Hardness: Rockwell C45. Finish: Phosphate coated for corrosion resistance.

Q: Which electric lift trucks use this retaining ring?
A: The AC 927791 is designed for Allis Chalmers electric lift truck bearing housings. Verify the housing diameter and bearing assembly configuration in your equipment specifications to confirm compatibility.

Q: Why is the phosphate coating important on this retaining ring?
A: The phosphate coated finish provides corrosion protection in wet environments and during storage. This finish resists rust and extends the service life of the retaining ring, particularly important in cold storage or outdoor material handling operations.

Q: How do I know if the AC 927791 needs replacement?
A: Replace the retaining ring if you notice bearing movement, grinding noises, inadequate preload, visible corrosion beneath the coating, or if the ring has been removed and cannot be reused. Do not reinstall a retaining ring that has been pried off multiple times.