Products inspection

Basic scheme (5 pcs as each group)             

Precision test of finished products: including tolerance, rotation, vibration, clearance, appearance, residual magnetism, hardness                    

Additional scheme           

Quality test of heat treatment: acid washing, hardness, metallographic structure     

Accuracy test of parts: roundness, roughness, convexity 

Sealability test: dustproof, grease leakage, temperature rise  

Sealed bearing test: greasing amount, cleanliness      

Life test       

Others         

Recommended scheme           

Option A                   

Accuracy test of finished products, including tolerance, rotation, vibration, clearance, appearance, residual magnetism, hardness

Option B            

Accuracy test of finished products, including tolerance, rotation, vibration, clearance, appearance, residual magnetism, hardness

Metallographic structure         

Convexity          

Temperature rise of sealed products            

Option C            

Accuracy test of finished products, including tolerance, rotation, vibration, clearance, appearance, residual magnetism, hardness       

Metallographic structure         

Convexity          

Temperature rise of sealed products            

Life test       

Factory audit

Options:

OEM market suppliers’audit

After market suppliers’ audit

Expert suppliers’audit

Roughing product suppliers’audit