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DRULL SPEEDS
MAKE CERTAIN the drill press is disconnected from the power source,
Nine drill speeds (150, 275, 325, 460,500,540,
1150, 1550 and 2200 RPM) are available with your drill press, See
Figure 10-1 to select the correct spindle speed for your operation,
This diagram can also be found on the inside of
the belt cover of the drill press,
Figure
10-1
Recommended
Dri||
Press
Speeds
Size
JSoftwo0d J Hardw0odJ Acryib J Brass _
Steel
Twist }]rill }]its
!/0" - 3/10"
1/4" - 3/8"
7/16" - 5/0"
11116"- t"
Brad Point B its
!/8" - 1/4"
310"
1/2"
5/8"
3/4"
1 _
Forstner8its
I/4" " 3/8"
I12" - 510"
3/4" - 1"
I-I18" - 1-114"
1-310"- 2"
2200
2200
2200
2200
2200 12200
2200
1550
2200
tt50
2200 11t50
1550
570
1550
570
1550
570
570
540
NR
325
570
325
1550
1550
1550
1550
1!50
1150
1150
1550
NR
NR
NR
570
1550
NR
NR
NR
570
1150
NR
NR F==_
540
570
NR
NR
NR
275
570
NR
NR
NR
275
275
NR
NR
NR
2200
2200
1550
1t50
540
570
NR
NR
NR
NR
540
275
NR
NR
NR
540
275
NR
NR
NR
275
275
NR
NR
NR
275
NR
NR
NR
NR
NR = NOT
RECOMMENDED
SPINDLE
MOTOR
PULLEY
PULLEY
2200
1t50
EGG
SPINDLE
MOTOR
PULLEY
PULLEY
MOTOR
PULLEY
15G
t 550
540
460
2'75
CHANGING
SPEEDS
AND
ADJUSTING
BELT TENSION
MAKE CERTAIN the drill press is disconnected from
the power source,
Figure
11-1
E
A
C
B
E
D
1,
Open the belt cover (A), See Figure 11=1,
2,
Loosen the tension lock knobs (B), one is on each
side,
3,
Rotate the belt tension handle (C) forward, away
from the motor (D),
4,
Position both belts (E) on selected pulleys accord-
ing to the drill speed diagram,
5,
Rotate the belt tension handle back, towards the
motor to apply tension on the belts,
NOTE: The belt should be just tight enough to prevent
slipping, Excessive tension will reduce the life of the
belt, pulleys and bearings, Correct tension is obtained
when the belt can be flexed about 1" out of line midway
between the pulleys using light finger pressure,
6,
Tighten both tension lock knobs,
19
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