For ongoing production, reliability checks are to be conducted on a defined frequency.

The common measurement is “L10” life, defined as the number of revolutions before metal fatigue first appears on 10% of a large group of like bearings. This is referred as basic rating life of fatigue life.The relationship between the basic rating life, the basic dynamic load rating and the bearing load is given in following formula:

Rolling Bearing Fatigue Life Test Report
Testing Purpose And Method		To test fatigue life of deep groove ball bearing 6205 ZZ entrusted by Huanchi Bearing Group Co.,Ltd. The bearing dynamic load rating Cr=14KN. Apply pure radial load. Adopt number suspend test method.
Product Type: 6205 ZZ Test Conditions		Tester Type						ABLT-1
		Rating Life						L10=100h
		Test Bearing Speed						4000rpm
		Load		Radial Load				Fr= 4.85KN
				Axial Load				Fa=0 KN
		Lubrication and cooling						Grease Lubrication
Test Beginning Date								Test Ending Date
Test Result
Number	Sample No.		Test Time (h)			Failure Part (s)				Remark
1	1#		347			INNER RING FAILURE
2	2#		292			OUTER RING FAILURE
3	3#		325			INNER RING FAILURE
4	4#		325			OUTER RING FAILURE
5	5#		331			OUTER RING FAILURE
6	6#		360			NO FAILURE
7	7#		304			INNER RING FAILURE
8	8#		360			NO FAILURE
Remark
Approver					Examinant				Compiler
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