Process Differences Between Bearing Outer and Inner Rings

Due to the extremely high rotational accuracy requirements and the need to transmit torque, the inner ring manufacturing process focuses on:

• Precision forming of locking taper (±0.02° angle tolerance)

• Super-fine textured oil storage in the raceway (reducing rolling element contact stress)

• Electromagnetic centerless clamping (roundness ≤0.001mm)

While the outer ring bears static loads and needs to prevent fretting wear, the core of the process lies in:

• Anti-crack design of assembly grooves (R-angle polishing + laser strengthening)

• Unidirectional spiral oil grooves on the outer raceway (optimizing lubrication path)

• Elastic thin-film fixture (compensating for clamping deformation)