Main Inspection Instruments

SILL uses advanced equipment to inspect dimensions, geometric tolerances, surface finish, material properties, noise and vibration. Strict end-to-end inspection ensures compliance with international standards and customer requirements.

Inspection & Testing

Every SILL bearing undergoes strict inspection from raw-material purchasing through each production step. Rolling-bearing inspection items are listed below.

No.	Inspection Item	Instrument	Notes
1	Residual Magnetism(<=0.4mT)	Residual Magnetism Tester	Q9921
2	Vibration (Noise)	S0910-1 BVT-1	CJZ-1A
3. a. b. c. d. e.	Dimensional Tolerance — Bore Diameter Deviation and Variation 1.ds 2.dmp Vdp Vdmp	D923 D924 D712 D713
	Outer Diameter Deviation and Variation 1.Ds 2.Dmp VDP VDMP	D051 D932 D14
	Inner Ring Width and Variation 1.Bs Vbs	G903~G905 G803
	Running Accuracy — Inner Ring Radial Runout	G903~G905 G803
	Assembly Chamfer Dimension	Limit Gauge
	Inner Ring Reference Face Runout to Bore SD	B002 B023A
4. a. b. c. d. e.	Outer Ring Radial Runout	B002 B013 B014A B002 C923 B002 B002 B023A B002 B013 B014A X093J X094J
	Bore Surface Inclination Variation to Reference Face SD
	Outer Surface Inclination Variation to Reference Face SD
	Inner Ring Face Runout to Raceway
	Outer Ring Face Runout to Raceway
	Radial Clearance
5	Heat-Treatment Quality
6. a. b.	Hardness (AISI52100 HRC61-65 AISI440C HRC>=58 AISI420C HRC>=55) Material and Metallographic Analysis	Hardness Tester
7. a. b. c.	Appearance Quality Rotation Flexibility Dust Shield and Seal Marking / Retention Packaging	Microscope Touch Visual & Touch Visual

Inspection

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