HSD
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
4
Cone cleaning (all versions)
Air inside tool (optional)
6 bar
MAX
4 bar
Ø 8 x 6
Ø 8 x 6
1
2
3
4
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.
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