SK ER Collet Chuck , DIN69871 collet clamping tool holder of various sizes , High Precision SK shank Tool Holder ,balanced G6.3 or G2.5 For choose.Improve the stability and accuracy. The hardness of the tool handle is 58-60 degrees, the true roundness is less than 0.008 mm, the accuracy of the body is less than 0.005, the runout accuracy is less than 0.005 mm, the noise is low, the wind resistance is small, and the repetitive clamping accuracy is high.

1. SK ER Collet Chuck 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. SK ER Collet Chuck The inner cone is tested by standard pneumometer. The contact area ratio of large end is over 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 clamp, the high point of comprehensive accuracy is not more than 0.005mm/0.008mm.
5. The grade of handle threads and nut threads is 4H. All ends are open and stop.
6. 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's needs.
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. SK ER Collet Chuck Appearance finishing electroless nickel plating improves corrosion resistance, wear resistance and corrosion resistance, and achieves better anti-rust effect.