HSD ES327 - Electric Fan; Tool Holder Locking and Ejection Device

6 Operation and regulation
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HSD S.p.A. © - 0106h03a.fm100713
6.4 Electric fan
The cooling of the "air" ES330 electrospindle is obtained using an electric fan installed
subsequently.
Its rotation is independent from the rotation regime of the spindle shaft: a better cooling efficiency
is thus obtained compared to that achieved when a fan synchronised with the spindle shaft is
used.
6.5 Tool holder locking and ejection device
The tool holder is locked mechanically by means of elastic springs that develop an axial force
equal to:
The ejection of the tool holder cone ISO30 must be about 0.5 mm - 0.9 mm.
The ejection of the tool holder cone HSK E25 must be about 0.5 mm - 0.6 mm.
The ejection of the tool holder cone HSK E40 / A40 must be about 0.5 mm - 0.6 mm.
The ejection of the tool holder cone BT30 must be about 0.5 mm - 0.6 mm.
During machining, the spindle can reach high temperatures and, as
such, must not be touched without taking the due precautions.
Only for HSK models:
To perform the preheat it is necessary to insert a toolholder WITHOUT a tool.
The electric fan must always be active, even when the electrospindle is idle.
TECHNICAL CHARACTERISTICS OF THE ELECTRIC FAN
24 V
DC 0.27 A 6.5 W IP 20
ELECTROSPINDLE MODEL
AXIAL FORCE OF THE
SPRING
AXIAL FORCE ON THE
TOOL HOLDER
ES327 HSK E25 980 ± 10% 2800 ± 10%
ES330 ISO30 3200 ± 10% 3000 ± 10%
ES331 BT30 3200 ± 10% 3200 ± 10%
ES332 HSK A40 2200 ± 10% 6800 ± 10%
ES370 HSK E40 2400 ± 10% 6800 ± 10%