Accession Number:

AD0780453

Title:

Progression of Surface Damage in Rolling Contact Fatigue.

Descriptive Note:

Final rept. May 73-Apr 74,

Corporate Author:

SKF INDUSTRIES INC KING OF PRUSSIA PA RESEARCH LAB

Personal Author(s):

• Dalal,H.
• Cotellesse,G.
• Morrison,F.
• Ninos,N.

Report Date:

1974-02-01

Pagination or Media Count:

67.0

Abstract:

Deep groove 6309 ball bearings were tested under heavy load in MIL-L-23699 lubricant using an ultraclean closed loop recirculating lubrication system in which the only metallic wearing component was the test bearing. A limited amount of Ferrographic analysis on the oil samples obtained from these tests has not established a definite correlation between Ferrogram readings and bearing failure progression. The discrimination of the Shock Pulse Analyzer MEPA to differentiate between a failed and non-failed bearing was confirmed. The shock value increased from 500 or less on a running bearing to 1000 or more on a failed bearing. Modified author abstract

Descriptors:

• *Antifriction bearings
• *Monitoring
• Nondestructive testing
• Fatigue(Mechanics)
• Friction
• Roll
• Monitors
• Damage
• Pulse analyzers
• Wear
• Detection
• Surfaces
• Failure
• Spallation
• Defects(Materials)
• Test equipment

Subject Categories:

• Machinery and Tools
• Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE