Hydraulic expansion chuckSK 40-25-117 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: Without 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

sleeves and tool arbors

parallelism: 0

In order to achieve an optimum sealing the tool must be clamped on the complete length of the ground drill of the collet

PSK = PSK 50

5 with h4-tolerance and Ø 6 – Ø 32 with h6-tolerance3

4 and 5 mm only solid carbide tool shanks must be used

For mounting straight-shank tools in collet chucks DIN 6499

With clamping screw and O-ring

Thread confi guration with a special design

Thread configuration with a special design

Minimal length compensation on compression and expansion balances very small pitch differences between synchro spindle and tap

For tools with taper shanks DIN 69871 and JIS B 6339 (MAS-BT)