ASM Failure Analysis Case Histories: Improper Maintenance, Repair, and Operating Conditions
Fretting of Freon-Compressor Shaft because of a Loose Bearing
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Published:2019
Abstract
The shaft-and-bearing assembly in a freon compressor was subjected to severe pounding and vibration after six years of service. After about one year of service, the compressor had been shut down to replace a bearing seal. One month before the shaft failed, a second seal failure occurred, requiring the collar, spacer sleeve, seal, roller bearing, and lock washer to be replaced. The shaft was made of 4140 steel, heat treated to a hardness of 20 to 26 HRC. The seal, bearing, and lock washer were commercial components. Investigation (visual inspection, 4.5x images, x-ray diffraction, hardness testing, and microscopic exam)...
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Member Sign InFretting of Freon-Compressor Shaft because of a Loose Bearing, ASM Failure Analysis Case Histories: Improper Maintenance, Repair, and Operating Conditions, ASM International, 2019, https://doi.org/10.31399/asm.fach.usage.c0091897
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