High Precision BT30-ER16 CNC Tool shank 

High Precision Coated BT30-ER16  CNC Tool shank,BT Tool Holders for mechanical spindle and cutting tool and other accessory tool connection. Is a simple, popular spindle shank connection standard, mainly BT30 BT40 BT50... Etc.. Mold industry, and high-speed engraving machine, used more.Er tool holder is a kind of numerical control tool holder, there are bt30, bt40, bt50, and there are many models, which are widely used. Used for boring, milling, drilling, tapping, grinding and carving. It is a common tool handle. Er shank and ER chuck, also known as spring chuck, Er nut, BT pull nail, Er elastic shank can be used to clamp milling cutters and taps. Bt Er Collet Chuck Product information: 1. The taper accuracy of tool shank 7:24 is less than AT3 and part of the standard sizes have been inspected in the last time by standard checking fixtures manufactured in Germany. 2. The inner cone is tested by standard pneumometer. The contact area ratio of large end i…