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DRILL SPEEDS
MAKE CERTAIN the drill press is disconnected from the power source.
Twelve drill speeds (300,400,
450, 600, 650, 700, 1100, 1600, 1700, 1900, 2600 and 3100 RM) are available with
your drill press. See Figure 11-1 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 11-1
Recommended
Drill
Press
Speeds
Softwood Hardwood j Acrylic! Brass ! Alum I Steel
Size
TwistDrillBits
1/16" =3/16"
1/4" =3/8"
7/16"=5/8"
11/16" =1"
BradPointBits
1/8" - 1/4"
3/6"
1/2"
5/6"
3/4" =7/8"
1"
Forstner B its
1/4" =5/8"
314"=1"
1-1/6" =1-1/4"
1=3/6"=2"
3100
3100
1600
700
3100
2600
3100
3100 3100
1600
1900
1100
2600 1100
700
1600
700
1600
600
450
NR
400
1100
300
1900
1900
1900
1900
1600
1100
1100
1600
NB
NR
NR
700
1600
NB
NR
NR
700
1100
NB
NR
NR
600
700
NR
NR
NR
300
600
NB
NR
NR
300
300
NR
NR
NR
2600
600
300
NB
NR
NR
1600
450
300
NR
NR
NR
1100
300
300
NB
NR
NR
600
300
NR
NR
NR
NR
SPINDLE
MOTOR
SPINDLE
MOTOR
300
4OO
450
600
650
ttoo
16OO
1700
t9OO
2600
3t00
700
CHANGING
SPEEDS
AND
ADJUSTING
BELT TENSION
MAKE CERTAIN the drill press is disconnected from
the power source.
Figure
12-1
E
A
E
\
B
1.
Open the belt cover (A). See Figure 12-1.
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.
2O
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