Grizzly G7945, Owner'S Manual

Page: 29 / 52

Model G7945/G7946 (Mfd. Since 09/17)
-27-
Never operate drill press with pulley cover in
the open position. You can get entangled in
belt/pulleys and serious personal injury may
occur.
The belt in the head of the drill press must be
rearranged to change speeds. A chart under the
pulley cover shows the belt positions needed to
make the drill press run at each available speed.
To change speeds:
1. DISCONNECT MACHINE FROM POWER!
2. Loosen belt-tension lock knobs (shown in
Figure 27) on both sides of the headstock,
so the motor is free to move.
Changing Speeds
3. Locate desired speed on the speed chart
under the pulley cover, and move the V-belt
to the desired pulley grooves.
4. Pivot the motor toward the back of the head-
stock and tighten the lock knobs once the
desired V-belt tension is achieved.
5. Close the belt cover before connecting the
machine to power.
Figure 27. Loosening belt-tension lock knob (1
of 2).
Drilling
The Model G7945/G7946 is designed for drilling
holes in wood, plastic, and metal. The basic
operation of a drill press is lining up your drill bit
with the intended hole location, turning the drill
press
ON, and using the down feed levers to
move the spinning drill bit into the workpiece.
For safe operation and optimum results, it
is very important to follow these guidelines
when drilling:
CLEARING CHIPS: Raise the drill bit often to
clear chips and cool the drill bit. This will ease the
work of the drill press motor and extend the life of
your drill bits.
SECURING WORKPIECE TO TABLE: Secure
the workpiece to the table or in a vise that is
secured to the table before drilling.
PROTECTING TABLE: Protect the table by plac-
ing the workpiece on scrap wood, or center the
location of the hole to be drilled over the pocket in
the table when through drilling. Also, make use of
the depth stop so that the drill bit goes no deeper
than necessary.
USING CORRECT SPEEDS: Use the correct
speed for the diameter of the drill bit being used
and the type of material being drilled. Refer to the
Drill Bit Speed Chart on Page 26 to help you
choose the correct speed for your application.
LARGE DIAMETER BITS: Large diameter drill
bits require slower spindle speeds.
SMALL DIAMETER BITS: Smaller diameter drill
bits require faster spindle speeds.
HARD MATERIAL: Harder materials (steel vs.
wood) require slower drilling speeds.
SOFT MATERIAL: Soft materials require a faster
drilling speed. (
NOTE: Plastics can melt at too
high of a spindle speed!)
LUBRICANT: Use lubricant on all materials
except wood and cast iron. Refer to
Lubrication
Suggestions on Page 26 to find the correct lubri-
cation for your application.