Jet BD-920N - Spindle Bearing and Slide Adjustments; Slide Adjustments

Bearings and Slide Adjustment
Adjustment of the Main spindle Bearings
The main spindle bearings are adjusted at the factory If
end play becomes evident after considerable use, the
bearings may be adjusted.
Loosen set screw (1, Fig. 32) in the slotted nut (2, Fig
32) on the back of the spindle. Tighten slotted nut until
all end play is taken up. The spindle should still revolve
freely. Caution: excessive tightening or preloading will
damaged the bearings. Tighten set screw (1, Fig. 32)
Adjustment of Cross and Top Slide
Each slide is fitted with a gib strip and can be adjusted
with screws (1, Fig. 33) fitted with lock nuts (2, Fig. 33)
Loosen the lock nuts and tighten the set screws until
slide moves freely without play. Tighten lock nuts to
retain adjustment.
Adjustment of Compound Feed Screw End Float
To adjust the slides on the saddle:
Loosen screw (1, Fig. 34) and lock nut (2, Fig 34)
Adjust the nut until all play has been taken up Lock the
nut (2) with the screw (1).
Cross Slide Screw
Remove the compound slide (Fig. 35) and adjust screw
(1, Fig. 35) until the backlash between the spindle and
the nut is eliminated.
For operator convenience, the compound may be
located in two positions on the cross slide.
14
Fig. 35