16159 : BT 40 x ER 20 - 70

Specifications Item Number 16159 Item Description BT40 Collet Chuck x ER20 - 70mm projection Taper BT40 Body Dia 44.45 Shank Size 63mm Weight 2.7 Collet series ER20 Taper length 65.4mm Nose dia 63mm Projection Length 70mm Overview **All images are representative images. Verify specifications before placing orders.** Techniks Tool Group Collet Chucks are designed to deliver excellent performance in a wide range of machining applications including milling,drilling,and tapping. Our exclusive PowerCOAT nuts come standard on all ER and TG Collet Chuck providing 75% more holding power on the tool shank vs. standard collet nuts for improved safety and reduce the potential of tool slippage. Both through-spindle and CoolFLEX AD+B flange coolant delivery are available. DualDRIVE c ollet chucks are designed to work with dual-contact spindles to provide superior rigidity under heavy side loads. Extended gage lengths are available for long reach applications such as machining on horizontal machining centers. Super Rigid collet chucks have a very short gage lengths are an excellent choice when Z-axis stroke is limited. Mini nuts are available to reduce nut overhang when machining in tight areas such as mold & die machining or medical parts manufacturing. Balanced to 25,000 RPM at G2.5 Maximum 0.0001" T.I.R. measured from taper to collet pocket PowerCOAT Nut increases holding power by 75%