DIN69871 ER Collet Chuck for Drilling

DIN69871 Er Collet Chuck for Drilling, CNC machine TOOL HOLDER Milling cutter COLLET CHUCK ,SK Tool Holders for mechanical spindle and cutting tool and other accessory tool connection. DIN6499 collet clamping Tool Holder of various sizes , high speed and high precision machining .Mechanical spindle and cutting tools and other accessories.High Precision Sk Shank Tool Holder ,balanced G6.3 or G2.5 For choose. Is a simple, popular spindle shank connection standard, mainly SK30 SK40 SK50... Etc.. Mold industry, and high-speed engraving machine, used more.

SK ER Collet Chuck Specifications
I - Sk Er Collet Chuck Material:
High quality carburizing alloy steel;
Central tensile strength 1000N/mm2 Min.;
Surface hardness HRC 60+/-2(HV 700+/-50);
Hardness penetration 0.8+/-0.2mm;
II - SK er Collet Chuck Tolerance Criteria
Dynamic balance(default): G6.3 12,000 rpm;
Dynamic balance(customized): G2.5 25,000 rpm;
Run-out tolerance: 0.003mm Max.
Cone angle tolerance: AT3
Cone surface roughness: Ra 0.005 Max.