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Gy-Roll standard adjustable centre heads should
be set in the following manner:
- The turrets are rotated to bring the spindles
to the required centre distance or pitch circle diameter.
- In cases where a particular spindle setting is
frequently required spindle positioners
can be provided for quickly locating
the spindles in their relative positions.
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When setting the spindle centre distance the
head can also be turned relative to the drill unit adaptor. This adjustment
may be necessary in order to line up spindles with the other holes to be drilled
and tapped.
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click photo to see more detail
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