ER-20 BT40 SPRING COLLET CHUCK (3900-7608)

ER-20 BT40 Spring Collet Chuck For CNC machines with BT taper spindles. Concentricity is .0002". All critical surfaces are hardened and precision ground. Gage depth is 2.76". Collet range is 0.040-0.511". Draw bar thread is M16 X 2.00. Nut type is hex. Shipping Weight: 2.6 lbs