Four-point angular contact bearings are typically used for radial and axial loads, commonly used on machine spindle axis, robot joints and other high precision equipment. The surface geometry, roughness, waviness and other parameters will have impact on bearing motion accuracy, vibration, noise and work life.
Four point contact bearing
Contour Measuring Instrument：
Raceway left and right radius, center distance of left and right arc, ball tangent point and vertical axis angle.
Roundness Measuring Instrument：
Raceway roundness, waviness, spectrum analysis, slope analysis, wave width and height analysis, outer surface roundness, coaxiality between raceway, raceway and outer diameter, wall thickness variation.
Roughness Measuring Instrument：
Roughness of raceway and outer surface
