We outsource raw materials，Bainite heat treatment，Monitoring of grinding process，Label management, steel storage to ring grinding, each process must be strictly managed, strict distinction between GCR15 and GCR15SIMN two different materials and products。


Ring (inner ring and outer ring)
Materials→ forging processing →turning processing →grinding →heat treatment processing → assembly

Roller
Material →turning→ heat treatment →grinding →assembly


Cage (copper frame)
Material → casting (tubular) →turning → milling →deburring →assembly