Boring bar blank SK 40 - 63 - 250Application: For the manufacturing of special tools. Note: Cone and flange hardened and grinded. Soft body for later processing. 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

wrench and collets

5 with h4-tolerance and Ø 6 – Ø 32 with h6-tolerance1

Extension rod >6mm

DIN 1835 form A+B+E and DIN 6535 form HA+HB+HE (larger than dia

Battery :1

3 µm radial run-out with a 2 µm clamping nut

01mm to the centre axis

For use on vises

5V Battery

- shock proof

longer tool life

- The steel body is hardened and grinded all-round