HSD
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4.4.4 Pneumatic connection points ES939 or variations with “T-block”
(double-acting cylinder)
Ref.
Description Pressure
Ø Tube
1 Tool-holder hook-up 6 bar Ø 8 x 6
2 Pressurisation 4 bar Ø 4x2
3 Tool-holder release 6 bar Ø 8 x 6
4
Cone cleaning (all versions)
Air inside tool (optional)
MAX
4 bar
Ø 8 x 6
2
3
4
1
The cylinders of these electrospindles are double-acting: it is necessary to keep the
cylinder under pressure to maintain the piston at the upper end stop, far from the fast-
rotating parts.