... and long service life.4) The electrically controlled and powerful DC motor: stable frequency, strong horsepower and long service life.5) Bearing ... , Φ14, Φ15, Φ16, Φ17, Φ18, Φ19, Φ20, Φ21, Φ22, Φ23, Φ24, Φ25, Φ26 Apolegamic collets: Φ8, Φ9, Φ10, Φ11, Φ12, Φ27 ...