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9. SETTING THE BENCH DRILL
6. TECHNICAL DESCRIPTION
6.1 IDENTIFICATION
- 10 - - 15 -
Pulley cover.
Spindle.
Intermediate pulley.
Motor pulley.
Motor tension locking
knob.
Motor tension lever.
Plunge handle.
Table height crank
handle.
Rack.
Table locking handle.
Work table.
Guard assembly.
No-volt on/off switch.
Spindle pulley.
Geared chuck.
Work table tilt locking
bolt.
Base.
Moulded plug & cable.
Work table height/
rotation locking handle.
Column.
Depth stop.
Motor.
Motor tension locking
knob.
FIG.13
FIG.12
NOTE: Remove the plug from the socket before
carrying out adjustment, servicing or maintenance.
9.1 SPINDLE SPEED
ADJUSTMENT - FIGS. 14 - 17
This drilling machine is equipped with 16 drilling
speeds.Remove the pulley cover securing screw.
Select the speed most suitable for the intended
application†.
Loosen both the locking knobs and adjust the
motor tension lever releasing the tautness across
the drive belts. Move the belt to the corresponding
sections of the motor, intermediate and spindle pulleys
ensuring the belts remain horizontal.
Apply pressure to the motor tension lever to
tension the drive belt. With the correct tension
achieved. Tighten both locking knobs .
Gently lower the pulley cover before tightening pulley
cover securing screw. Never attempt to operate the
drilling machine with the pulley cover open or not fully
secured.
CAUTION: Over tensioning the drive belt will
accelerate belt wear, increase the loading on drive
bearings and the motor possibly leading to premature
failure. Under tensioning the drive belt will lead to the
drive belt slipping and increased noise.
†As a general rule material with a softer composition
can be drilled faster as they cut more easily. Harder
materials require a slower speed as attempting to
make the hole at a high speed will result in the drill bit
over heating which may result in a poorly finished hole,
the bit annealing or the bit breaking.
Drilling wood too slowly can cause splintering.
FIG.11
Slow
1
Fast
16
Setting
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Speed
160 min
-1
240 min
-1
290 min
-1
350 min
-1
410 min
-1
480 min
-1
530 min
-1
590 min
-1
660 min
-1
720 min
-1
1,190 min
-1
1,350 min
-1
1,510 min
-1
1,970 min
-1
2,100 min
-1
3,000 min
-1
Drive Belt Position
Spindle
E - 5
D - 4
E - 5
C - 3
E - 5
D - 4
B - 2
C - 3
D -4
E - 5
A - 1
B - 2
C - 3
A - 1
B - 2
A - 1
Motor
1 - 1
1 - 1
2 - 2
1 - 1
3 - 3
2 - 2
1 - 1
2 - 2
3 - 3
4 - 4
2 - 2
3 - 3
4 - 4
3 - 3
4 - 4
4 - 4
FIG.10
MOTOR
PULLEY
INTERMEDIATE
PULLEY
SPINDLE
PULLEY
E
D
C
B
A
5
4
3
2
4
3
2
1
1
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