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SPINDLE SPEEDS
The Model G1131 features a five-speed belt
drive system – so you can adjust drill
speeds to match your project. To change
spindle speeds:
1. Turn off and unplug the drill press and
allow all moving parts to stop.
2. Loosen the tensioning knob located just
forward of the motor mount.
3. Open the top of the belt housing and
reduce tension on the belts by pushing
the motor toward the front of the drill
press.
4. Move the V-belt to a position that
reflects the spindle speed you desire.
See the illustration below for belt
speeds. Always move the end of the
belt that will move toward a smaller pul-
ley first.
5. When you have relocated the belt, re-
tension the motor mount. A properly
tensioned belt will have about
1
/2" of
deflection mid-way between pulleys.
6. Tighten the tensioning knob and close
the belt housing cover.
Never attempt to alter speeds by angling the
belt between un-matched pulleys. Doing so
could damage the belt and burn out bear-
ings in the spindle assembly.
SPINDLE
MOTOR
3400 RPM
2325 RPM
1700 RPM
1140 RPM
740 RPM
TILTING DRILL HEAD
Adjust the drill head up to 45° clockwise or
counterclockwise by loosening the tilt lock
knob on the right side of the horizontal col-
umn support. An angle guide at the front of
the column support allows you to determine
the angle of spindle travel.
Remember to square your spindle assembly
to the table with a machinists or combination
square when returning to the zero position.
ROTATING DRILL HEAD
The drill head on the Model G1131 Radial
Drill Press can be rotated a full 360° to han-
dle projects too large to fit on the table or
base support. To rotate the head, loosen the
4mm setscrews on the left side of the hori-
zontal column support. Once loosened, the
drill head can be rotated to fit your project.
Keep in mind, while rotating the head, that
the electrical cord must turn along with the
machine. Pay attention that the cord isn’t
pinched or snagged as a result of the rota-
tion.
FORE/AFT MOVEMENT
The drill head on the Model G1131 Radial
Drill Press can be moved to front and back
to accommodate smaller or larger projects.
To adjust, loosen the tilt lock knob and slide
the horizontal column forward or backward
to suit your needs. Remember to ensure
that the spindle assembly is square to the
table before operating the machine.