Wanting to improve corrosion resistance of critical airframe manage bearings.

Wanting to improve corrosion resistance of critical airframe manage bearings, the Torrington Co./Fafnir Bearings Division, Torrington, Conn newly changed the alloys used in their construction. The accrue was a 17% improvement in dynamic fatigue life.
The company switched from conventional carburizing bearing hanger specified in MIL-B-6039 and a through-hardened SAE 52100 rapier to Pyrowear 675 stainless alloy and through-hardened impressed sign 440C stainless steel. The Pyrowear material was make knowned by Carpenter Technology Corp., Reading, Pa.

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