Spindle Speed And Direction - Grizzly G0704 Owner's Manual

Spindle Speed and
Direction
setting the speed on the model g0704 is a two
part process. the gearbox in the headstock has
two gear ranges and the motor is a variable speed
unit. together, these two systems provide an
overall speed range of 50–2250 rpm.
To set the spindle speed:
1. determine the appropriate spindle speed for
your operation. see calculating Spindle
Speed on page 26.
2.
select the appropriate speed range using
the speed range selector knob (figure 25).
"h" represents the high speed range, which
is capable of spindle speeds from 100–2250
rpm. "l" represents the low range, which
is capable of spindle speeds from 50–1125
rpm.
Note: To maximize spindle torque, use the
low range except when the required spindle
RPM is over the low range maximum of 1125
RPM.
speed selection
Knob
figure 25. Speed selector knob.
model g0704 (mfg. since 08/11)
Note: It may be necessary to rotate the
spindle by hand to get the gears to mesh
properly.
3. make sure the work area is clear and that all
safety precautions are taken.
4.
turn the variable spindle speed knob to the
far left (slowest) position, then press the
green start button and use the spindle direc-
tion selection knob to choose the direction
of spindle travel and start spindle rotation
(figure 26).
variable spindle
speed Knob
figure 26. Spindle direction selection knob.
5.
Watch the rpm readout and adjust the vari-
able spindle speed knob as needed until the
desired rpm is reached.
NOTICE
AvOID OvERHEATING MOTOR!
DO NOT operate with variable speed dial at
full RpM for than a couple minutes or motor
overheating may occur. Instead, achieve the
same spindle speed by using the high "H"
speed range and reducing the motor RpM
by turning the variable speed dial down.
rpm readout
spindle direction
selection Knob
-27-