Combi shell mill holder SK 40 - 22 - 55Application: For mounting milling cutters with transverse or longitudinal groove. Delivery: With retaining screw, driving ring and feather key 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

For machining centres without synchronous spindle

With precision clamping nut

For the inspection of machine tools according to ISO ­recommendation R230 or for testing the tool spindle

With ER-Mini-nut

For mounting straight-shank tools in 3µm-collets

or fi xation on T-groove tables

Scale reading by nonius: 3

For combi shell mill holders DIN 6358

Resolution: 30"/0

The spring-mounted spherical tip protects the unit from damage if contact is too strong

With ball bearing clamping nut

For holding tapers according to DIN 69871