High Performance Milling Chuck BT 40-20-90 JIS B 6339 (MAS-BT) HKS-system in wooden boxApplication: For mounting straight shank tools. 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

Standard type without safety clutch

Excellent performance on various work material: Stainless steel

5 with h4-tolerance and Ø 6 – Ø 32 with h6-tolerance2

nuts and plain washers

For mounting straight-shank tools in collet chucks ISO 15488 (ex

clamping depth = 58

Taper angle tolerance < AT 3 according to DIN 2080

- Calibration of the angular position of spindles of milling-turning centres

Betthöhe H: 0

- Higher repeat-accuracy

For cleaning internal tapers on machine spindles

Zero-setting at any position for incremental measurement