Fx-12 CNC centerless grinding machine 1. Ontology. The body and main components are cast in one time with Milhanna high grade cast iron FC-30. 2. Spindle system. The main shaft is made of Taiwan Jianchang brand, SNCM-21H alloy steel. 3. Adjust the wheel drive system. The driving motor of the spindle of the adjusting wheel is Delta servo motor. The speed control is 0-250rpm(digital control). The speed can be set arbitrarily. 4. Main shaft circulating oil system. Spindle automatic lubricating circulating oil (high spindle oil 10#) and oil pressure dressing device is the same oil pump, external tank.