What are the requirements for the quality of the bearing appearance?

Update:21-09-2020
Summary:

1. Bearing parts Bearing parts are not allowed to have […]

1. Bearing parts
Bearing parts are not allowed to have cracks, sharp edges, burrs and corrosion.
The raceway is not allowed to have traces of the previous process.
The ultra-precision lines of the inner and outer rings and the steel ball working surface should be uniform, and no scratches or bruises are allowed.
2. Matching of bearing parts
The grinding lines on the matching surface of the bearing parts should be regular and consistent
Spiral patterns, vibration patterns, yin and yang faces and grinding marks are not allowed
No supporting marks and obvious measurement traces are allowed
No bumps and obvious color differences are allowed.
3. Surface of parts
No oxide scale on the surface of the part.
The ferrule chamfer, inner and outer diameter, and outer and inner diameter require brightening treatment.
4. Bearing rings
After the bearing ring parts are pickled
There should be no burns on the work surface
The mating surface should not have visible burn marks without pickling and does not affect the hardness test.
5. Assembly chamfer
a. Assembling chamfer size and chamfer shape should conform to our product drawing regulations.
b. There is no rust and bumps on the chamfered surface.
6. Steel ball
The appearance quality standards of steel balls should meet the requirements of JB/T10861 standard.
7. Cage
The appearance surface should be flat, smooth, free of burrs, bruises, corrosion and obvious color difference
Appearance defects such as crushing, bruising, deformation, and trachoma are not allowed.

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