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Rotor damper bearing

Engineering requirements in military aircraft applications are always rigorous. This is especially so when high-speed aircraft pass through different atmospheric conditions in a matter of minutes or remain in them for very long periods of time.

Rotor damper main bearings in the U.S. Navy’s Seahawk helicopters suffered service problems.

Crucial parts were plagued by premature wear, leading to frequent downtime. This resulted in critical equipment being out of service. Short product life was traced to the use of some bearing components made from beryllium copper.

Solution

The engineering design team took an innovative approach. To reduce friction and wear, some nonferrous metal parts were replaced with HiMod® 924 polymer bearings, and the elimination of metal-to-metal contact was achieved.

Result

HiMod® bearings could better withstand such demanding load and high vibration conditions.

In addition, the bearings offered a better strength-to-weight ratio, excellent abrasion resistance, chemical resistance and vibration dampening properties.