End mill holder Whistle-Notch BT 40 - 12 - 63Application: For mounting straight shank tools and inclined flat according to DIN 1835 form E (Whistle Notch). Delivery: With clamping screw and axial adjustment bolt 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

For sealing tools with internal cooling in collet chucks

For retaining screw DIN 6367

- HRC 43-47

For the manufacturing of special tools

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

5 with h4-tolerance and Ø 6 – Ø 32 with h6-tolerance3

Tensile strength in the core of min

Without wrench

Application:

For face machining

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

With retaining screw