CNC-Drill chuck SK 40 - 0.5/8 - 70Application: For mounting tools with straight shanks. Delivery: All holders are made of forged steel Specific, low warpage hardened Surface hardened HRC 58~60 Hardening depth 0,8mm~0,9mm Taper angle tolerance < AT 3 according to DIN 2080 Surface roughness Ra < 0,4 m Tensile strength in the core of min. 800 N mm after DIN All functional surfaces fine machined

Surface hardened HRC 58~60

5 x 58 x 18

The steel body is hardened and grinded

E3= 12 pieces

206 x 56 x 24

is prevented from attaching itself by vacuum

Rolled thread

For clamping tools with Morse taper shank and thread according to DIN 228-1 form A

For mounting and drifting taper shanks DIN 228-1 A in toolholders DIN 228-1 B

making the system suitable for internal cooling

With ball bearing clamping nut

A possible increase of axial force during the tapping process is reduced to a minimum