Surface quality directly affects lubrication film formation and fatigue life.
Precision Grades
Common precision grades:
1、G5
2、G10
3、G16
These grades define:
1、Sphericity
2、Diameter variation
3、Surface finish
Roughness Requirements
Fine surface finish reduces:
1、Friction
2、Micro-contact stress
3、Lubrication breakdown
Inspection Methods
1、Optical roundness measurement
2、Surface profilometry
3、Non-destructive testing
High-precision applications (e.g., machine tool spindles) typically require G5 grade.
