12
Figure 8-5: table tilt (JD-32120 only)
8.0
Operating controls
Press ON button to start spindle rotation. Press OFF
to stop.
9.0
Operation
1. Insert drill bit into chuck jaws about 25.4mm deep.
When using a small bit, do not insert it so far that
the jaws touch the flutes of the bit. Make sure bit
is centered in chuck before tightening chuck with
key.
For a small workpiece that cannot be clamped to the
table, use a drill press vise. The vise must be
clamped or bolted to the table. Always use a
back-up piece of scrap wood to cover the table.
This protects both table and drill bit.
Workpiece must be clamped
to table or secured in a drill press vise that is
securely fastened to table. Failure to comply
may cause serious injury.
Feed the bit into the material with only enough force to
allow the drill bit to work. Feeding too slowly may
cause burning of the workpiece. Feeding too
quickly may cause the motor to stop and/or the
drill bit to break.
Generally speaking, the smaller the drill bit, the
greater the RPM required. Soft materials require
higher speeds; hard metals slower speeds.
10.0
User-maintenance
Before any intervention on the
machine, disconnect it from electrical supply by
pulling out plug or turning off main switch at
electrical source. Failure to comply may cause
serious injury.
A coat of automobile-type wax applied to table and
column will help keep surfaces clean.
Check that bolts are tight and electrical cords are in
good condition. If an electrical cord is worn, cut, or
damaged in any way, have it replaced immediately.
In dusty environments, frequently blow out any dust
that accumulates inside the motor fan cover.
Belts should be in good condition with no signs of
cracks, frays or deterioration.
10.1
Lubrication
All ball bearings are pre-lubricated and sealed, and
require no further lubrication.
Periodically apply #2 tube grease to:
Rack.
Table elevating mechanism, including worm gear.
Splines (grooves) in spindle.
Teeth of quill.
Periodically apply light coat of machine tool oil to quill
and column.
The quill return spring should receive SAE 20 oil once
yearly. Apply the oil beneath spring cover (F, Figure 8-
3) using a squirt can.
10.2
Belt replacement
To loosen and remove the existing v-belts, use the
same procedures described in
sect. 7.2, Changing
spindle speeds.
