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

Hardening depth 0

With wrench

Low-vibration boring barsWith internal coolingLonger durability of insertsFor longitudinal and plane turningSetting angle: 93°Delivery: without inserts

Axial sealed with two O-rings

ER-system with spray nozzles

Collets sealed with seal for IC DIN 6499 B (ISO 15488 B) ER-system

With clamping screw

For measuring the groove diameter of shafts

Instructions for useWrench4 pcs

For mounting straight-shank tools

thin thread and pitch diameter oversize

With retaining screw