Clarke CDP10B Operating & Maintenance Instructions - Page 12
Browse online or download pdf Operating & Maintenance Instructions for Power Tool Clarke CDP10B. Clarke CDP10B 19 pages. 12 speed drill press
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3. Changing Drill (Spindle) Speed.
Before changing the speeds, ensure the
machine is switched OFF and disconnected
from the mains supply.
1. Slacken off the Belt Tension Locking Screw (see
fig.6), to relieve any tension on the drive belt.
2. Open the pulley cover.
3. Consult the chart inside the pulley cover and
position the belts on the pulleys according to
the spindle speed required.
4. When the belt has been correctly positioned,
re-tension by levering the motor away from the
head, until the belts deflect by approx. ½" at
the middle of their run, when using reasonable
thumb pressure. Lock the motor in this position
with the Belt Tension Locking Screws. Finally,
re-check the operation of the Microswitch (see
page 10)
DRILL SPEED TABLE
The table below gives the belt arrangement for given drill speeds. A full chart is also provided on
the inside of the pulley cover.
Spindle
1
2
3
4
5
6
The diagram shows the belts fitted to step 4 of the Spindle Pulley and 1 of the Motor Pulley, giving
a drill speed of 210 RPM.
Motor
Pulley
Pulley
A
B
4
1
4
2
3
1
2
1
3
2
4
3
Fig. 11
Drill
Spindle
Speed
Pulley
RPM
A
210
7
1
280
8
2
320
9
3
420
10
1
500
11
2
540
12
1
Fig. 12
Motor
Drill
Pulley
Speed
B
RPM
2
830
3
1290
4
1350
3
1580
4
2180
4
2580
12