1. please clean the machine taper shank and the tapered bore before insert the center. 2. Please confirm the center whether the firm after installation, to prevent oscillation. 3. Do not contact Center head part by hand when installing, to prevent the hand was stabbed. 4. Please jack up the center when take down (remove nut live center,please using wrench).Not use metal tools hammering, to avoid damage products and affect accuracy.

1.Do not contact Center when works, to avoid accident. 2.Any abnormal please stop the machine and check immediately.

1.Please take down the center when not in use, and lightly to avoid damaged surface,affect the accruacy. 2.Please clean cutting before you conserve the center, and take rust protection, such as use antirust oil.