® Design, Function, Effect, Use
Design Piston clamping crewSet screw for length adjustmentExpansion chamber
Clamping boreHydraulic mediumTool length adjusting screwPressure piston The expansion collet is most suitable for directclamping of tool shanks to DIN 6535 form HA
and HB and to DIN 1835 form A and B with
shank tolerance h Function When the clamping screw is turned, thehydraulic medium is compressed by the
clamping piston in the thin-walled expansion
chamber under high pressure.It expands in a similar way to a membrane andsurrounds the tool shank centrically, exerting a
strong gripping force. and R min of 0,3 µm.Form HA and A=solid straight shank,diameter-ø 6 to 32 mm.Form HB and B=straight shank withlateral pulling face
(Weldon) diameter 6 to
max. 20 mm.Form HE= straight shank withinclined clamping
surface (Whistle Notch)diameter 6 to max. 20 mm. Effect
6 a The hydraulic clamping system has a dampingeffect. Microscopic blow-outs on cutting
edges of
cutting tools caused by the vibration
of mechanical
clamp systems are absorbed
by the expansion clamping system.This leads to good manufacturing quality andan increase in cutting tool life by up to 4 times. Note:Maximum tool life and manufacturingquality are achieved with solid straight
shanks to DIN 6535 form HA.
Use Recommendation:only to be used with a reducer.
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