Hydraulic expansion chuck SK 30-20-90 DIN 69871 AD/B in wooden boxApplication: For mounting straight shank tools acc. DIN 1835 form A+B+E and DIN 6535 form HA+HB+HE (larger than dia. 20 mm only with reduction sleeve). Note: l1 = max. clamping depth l2 = max. length adjustment range Delivery: With wrench 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

Ø 6 – Ø 32 with h6-tolerance

Measuring contact points are designed to allow measurements near to the bottom of blind holes

Synchro tapping chucks compensate synchronisation errors

- Rustproof

with cooling channels

vertical and lateral

d = 40/d = 60: For large diameter face mill cutters with four additional threaded holes according to DIN 2079

With clamping screw and O-ring

Ratchet stop

For measuring the groove diameter of shafts

For mounting straight-shank tools acc

- Longer-lived than standard collets