Drill chuck adaptor DIN 238 SK 50 - B12Application: For mounting drill chucks. 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

For mounting straight-shank tools with lateral flat according to DIN 1835 form B (Weldon)

For machines with rigid tapping

Surface hardened HRC 58~60

For d = 60 only with four fi xation screws according to DIN 912

4021 x 20Cr13

- Honed collet boring

critical factors for successful deep face grooving operations

Suitable for internal coolant

Application:

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

For safe clamping of taps

With retaining screw