Brief introduction
BT/APU Drill Chuck With High Precision 0.05mm, Application range: clip diameter: 0.5-16mm bit .Mechanical spindle and cutting tools and other accessories.High Precision BT shank Tool Holder ,balanced G6.3 or G2.5 For choose.
Specifications
Product Name: APU drill chuck
Product model: BT40-APU
Material: high quality carburizing alloy steel, blackening and fine grinding taper tolerance grade: < AT3
Hard: 56-58 HRC
Carburizing depth: 0.8mm + 0.2mm
Maximum beat: <0.005mm=5um
Surface roughness: Ra<0.005mm

Products advantages
@ integrated design of the rob and collet,can avoid the collet and rob separate
@ High accuracy,strong grasp force,and high stability
@ Easy broken parts are dealt by quenching
@ Self-tightening,grasp the collet slightly,when drilling,graso force is enhancing with the torque increasing and develop obvious strong grasp force to prevent the drill remove
-- Can do dynamic balance est G6.3  G2.5