Jet BD-920W, Operating Instructions And Parts Manual, Page: 10 / 48

10
Carriage
The carriage (Figure 5) is made from high-grade
cast iron. The sliding parts are smooth ground.
They fit the V on the bed without play. The lower
sliding parts can be easily and simply adjusted. The
cross slide is mounted on the carriage and moves
on a dovetail. Play in the cross slide may be
adjusted with the gibs.
Move the cross slide using the conveniently
positioned handwheel (Figure 5). There is a
graduated collar on the handwheel. One graduated
mark equals 0.0254 millimeters or 0.001 inches.
The top slide, mounted on the cross slide, can be
rotated 360º. The top slide and the cross slide travel
in dovetailed slides and have gibs, adjustable nuts,
and graduated collars.
A four-way tool post is fitted on the top slide. The
four-way tool post can be converted to a single tool
holder with parts enclosed in the toolbox (Figure 6).
See parts breakdown on page 38 for assembly of
tool holder.
For accurate facing operations, the carriage can be
locked by tightening the hex socket cap screw (A,
Figure 7).
Apron
The apron (Figure 8) is mounted on the bed. A half
nut is fitted to the apron. The half nut gibs can be
adjusted from the outside.
The half nut is engaged by the half nut lever.
The rack mounted on the bed, and a pinion
operated by a handwheel on the carriage, allow for
quick travel of the apron.
Figure 8
Figure 5
Figure 6
Figure 7
Half nut lever Apron
Cross slide handwheel