Rottler P69AHD, Operation And Maintenance Manual

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Section 6 Maintenance P69AHD Manual
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6-26
Vertical Gib Adjustment
Gib adjustments can affect the sweep of the spindle front to back. With the indicator in the 6 O’clock
position (as you face the front of the machine) tightening the vertical gibs will lessen the pressure on the
indicator probe. Loosening the gib will increase the amount of pressure on the indicator probe.
Example:
If you have a reading of 0.0 on the indicator at the 6 O’clock position and -.002” in the 12
O’clock position, tightening the gibs will bring the front of the spindle up. Adjust the gibs until you are
within the factory specified .001” deviance.
To adjust the vertical gibs locate the screw at the top and bottom of the gibs.
Tightening Gibs
To tighten the gibs, loosen the lower screw. Start tightening the top screw until the correct alignment
is achieved. When the correct alignment is achieved, tighten the lower screw to lock the adjustment in
place.
Note: Adjusting the gibs too tight will cause sticktion and erratic movement in the vertical travel.
Loosening Gibs
To loosen the gibs, loosen the top screw. Start tightening the lower screw until the correct alignment is
achieved. When the correct alignment is achieved, tighten the upper screw to lock adjustment in place.
Note: Having the gibs too loose will cause erratic bore size and finish.
If you do not know how tight or loose the gibs are adjusted, you can remove the way wipers from the
top of the gib. When you look in at the gib you will see a horizontal scribe line on most of the gibs. This
can be aligned with the internal casting for a starting point. The gibs may need further adjustment at this
point. This is only recommended as a starting point.
If there are any questions on this procedure contact Rottler Manufacturing Service Department.