Hydraulic expansion chuck SK 50-25-87 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

wrench and collets

Surface hardened HRC 58~60

With wrench

For the coolant supply through the centre of PSK toolholders

Delivery: without inserts

E3= 12 pieces

For parts with delicate clamping surfaces

Collet chucks and wrenches to be ordered separately

Bearing edge ground

Inch/Metric conversion

Instructions for useWrench4 pcs

which can cause high frictional forces on the thread flanks