Rottler S7A, Operation And Maintenance Manual

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Section 6 Maintenance S7A S8A Manual
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6-19
Outer Spindle Adjustment
The main spindle bearings are tapered split cast iron rings, held in a seat by an adjustment nut. These
bearings normally require no adjustment for many surfacing cycles.
CAUTION:
Be careful not to over tighten these bearings. An over tight condition only serves to wear out
the machine and make control operation difficult.
If it is necessary to adjust, see the following instructions:
Move the spindle base to a clear position making sure the spindle can travel its full vertical length.
Thoroughly clean and lightly oil the Outer Spindle before adjustment.
Remove the lower wiper retainer ring along with the wipers and felts to expose the lower spindle bushing
adjustment nut.
Loosen the set screws located on the front of the upper and lower portion of the Spindle Base. Loosen
the upper and lower bushing adjustment nuts to remove any pressure on the bushings. Tighten the upper
and lower adjustment nuts evenly until they are lightly touching, but have no load on them.
Move the spindle down 3-4”. Tighten the upper bushing. Tighten only by hand.
Move the spindle up. Tighten the lower bushing. Tighten only by hand.