618 Direct-coupled main shafts for surface-grinding machine

performance & characters:

1. Noise，low vibration，high precision，high rigidity，and low

temperature.

2. Direct-coupled design for motor and main shaft.(the motor and shuft are no

longer driven by belt or junction box)hence no power loss，out strong

cutting capacity，low vibration，high gmoothness for cutting surface and

high precision.

3. With high precision（Grade P4）double row roller（ball）bearing from

japan,field installation up to dimension for the best precision，rigidity and

long service life.

4. Japan-made high rigidity chrome and molybdenum alloy steel for main

shaft material, high precision and resistance after quenching and

tempering，stengthen treatment（surface HRC55-60）and precision

grinding.

5. Complete precision dynamic balancing（including motor rotor）gives

the best performance and highest grinding precision and brightness.