Hydraulic expansion chuck BT 30 - 12 - 72Application: 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

Mainly for external machining

Coolant nozzles lockable for tools with internal coolant

Axial sealed with two O-rings

Individual serial numbers on each block

All tool sizes can be combined

- After mounting

critical factors for successful deep face grooving operations

With ER-Mini-nut

Plug gauge sizes according to DIN 2245

20mm for over 500mm/20" range

HSS-Co5 Twist drill DIN338 d=6

4 coupling