Boring bar blank SK 40 - 63 - 250

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

Delivery with test certificate All holders are made of forged steel

Angle reading = 10 arcmin

For cleaning internal tapers on machine spindles

clamping depth

For setting the tool in the HKS collet chucks

Without the illustrated cutting tools

no adhesion occurs and the tool

6 µm radial run-out with a 5 µm clamping nut

For adaption from HSK-A to PSC (ISO 7388-1 to ISO 26623-1)

Collets sealed for high pressure cooling 120 bar

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

For mounting solid drills with cylindrical shank according to DIN 6595