SYMPOSIA PAPER Published: 01 January 1998
STP12145S

The Evaluation of Corrosion Resistant Rod End Rolling Element Bearings

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Recent developments on carburizing grades of stainless steels [1–3] have provided new materials to produce corrosion resistant airframe control bearings. This paper presents the application of one of these new carburizing grades of stainless steel to rod end ball bearings. The outer ring of the rod end bearing is made out of carburized stainless steel, while the inner ring and balls are made out of through-hardened stainless steel. The stainless steel rod end bearings were evaluated according to various ASTM and Military specifications for performance and corrosion resistance. The stainless steel rod end bearings exceeded the performance requirements of standard rod end bearings (which are comprised of a carburized 8620 steel outer ring and 52100 steel inner ring and balls) in accordance with MIL-8-6039. The rod end bearings were evaluated in the radial fracture load, axial fracture load, and radial dynamic load tests. Also, salt spray and alternate immersion corrosion tests (ASTM B 117-85 and G 44-88, respectively) were conducted on the stainless steel rod end bearings. The stainless steel rod end bearings exhibited superior corrosion resistance to the standard 8620/52100 steel rod end bearings.

Author Information

Braza, JF
The Torrington Company, Advanced Technology Center, Torrington, CT, USA
Giuntoli, K
The Torrington Company, Torrington, CT, USA
Imundo, JR
The Torrington Company, Advanced Technology Center, Torrington, CT, USA
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Details
Developed by Committee: A01
Pages: 460–470
DOI: 10.1520/STP12145S
ISBN-EB: 978-0-8031-5381-3
ISBN-13: 978-0-8031-2421-9