SK Milling Tool Holder ER Collet Chuck

DIN69871 Standard SK Milling Tool Holder ER Collet Chuck for Lathe Machine , select high quality materials, after heat treatment has better elasticity and wear resistance, high precision, stable performance. Mainly used for drilling, milling, reaming, tapping and grinding tool holder use.SK Tool Holders for mechanical spindle and cutting tool and other accessory tool connection. 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
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 is more than 90%.
3. The inner cone runout of the tool handle body is less than 0.002.
4. Coaxiality of tool handle, with 0.005mm/0.008mm cylinder clamp, the high point of comprehensive accuracy does not exceed 0.005mm/0.008mm.
5. The grade of handle threads and nut threads is 4H. All ends are open and stop.
6. SK ER Collet chuck Dynamic balance: G6.3 12000/18000 RPM G2.5 15000/20000 RPM can be made according to demand. It can also be customized according to customer demand.
7. SK ER Collet chuck Material: 20CrMnTi.
8. SK ER Collet chuck Hardness: HRC 56 degree-60 degree.
9. Carburizing depth: > 0.8.
10, -185C degree cryogenic treatment, 20 hours thermal aging.
11. Appearance finishing electroless nickel plating improves corrosion resistance, wear resistance and corrosion resistance, and achieves better anti-rust effect.