Silicon Nitride Ball Bearing Demonstration Test.
Abstract
A 35-mm bore angular contact ball bearing having M50 tool steel races and hot-pressed silicon nitride balls was tested at speeds to 71,500 rpm (2.5-million DN). The bearing ran smoothly throughout 32 hr of accumulated time. Heat generation was 10 to 20% lower than that of a comparable bearing with steel balls, and the silicon nitride bearing required 30% less axial load at the inception of ball skid. The silicon nitride balls and steel raceways were in excellent condition after the test.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 10, 1975
- Accession Number
- ADA012526
Entities
People
- J. M. Reddecliff
Organizations
- Pratt & Whitney