Hydraulic expansion chuck SK 40-20-82 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

clamping depth = 36

set contains following adaptors:

5 with h4-tolerance and Ø 6 – Ø 32 with h6-tolerance2

For parts with delicate clamping surfaces

Chrome vanadium steel main body

Taper angle tolerance < AT 3 according to DIN 2080

For face machining

With balanced clamping nut

Minimum internal diameter measurement capability of 20mm

Extremely strong holding force (increases the holding power by at least 60% compared to standard ER chuck)

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

For horizontal and vertical clamping of round and flat workpieces