Materials and Accuracy	Inspection and test
Vibration and Noise	Lubrication
Bearing Specifications
From raw material to each fabrication step,bearing is 100% inspected strictly to ensure the quality.The examination item of plain bearing is shown on the talbe. Plain bearing examination item and test device No. Examination item test device remarks 1. residual magnetization reidual magnetiwm meter Q9921 CJZ-1A 2. vibration(noise) S0910-1 BVT-1 3. a. b. c. d. tolerance of dimension bore deviation and variaion ΔDs ΔDmp VDP Vdmp D923 D924 D712 D713 OD deviation and variation ΔDs ΔDmp VDP Vdmp D051 D923 D14 inner ring width and variation ΔBs VBs G903-G905 G803 inner ring width and variation ΔCs Vcs G903-G905 G803 fitting chamfering dimension Iimit coupon 4. a. b. c. d. e. f. accuracy of ratation Kia inner ring radial runout B002 B023A Kia outer ring radial runout B002 B013 B014A Sd runout between inner ring reference plane and bore B002 C923 tilt variation between OD surface baseline and reference plane B002 Sia runout between inner ring plane and groove B002 B023A Sea runout between outer ring plane and groove B002 B013 B014A 5. Cr racial plqy X093J X094J 6. a. b. heat treatment quality Hardness(AISI52100 HRC61-65 AISI440C HRC≥58 AISI420C HRC≥55) durometer material and metallographic analysis microscope 7. a. b. c. apparent quality rotating flexibility feeling shield or seal ring mark and fastness visual and feeling package condition visual examnation