User Manual

15
be necessary to turn the arbor slightly in order for the gears to mesh properly). Follow the recommended
speed ranges on the cutting speed chart to set the proper speed and gear range.
4 SPEED GEAR CHART(VARIABLE MOTOR SPEED MODELS)
NOTE: These speeds are general recommendations only. The material should determine actual speeds
and the cutting speed recommended by the cutting tool manufacturer. See the section below
"RECOMMENDED SURFACE SPEEDS" and use the formula to calculate the best RPM.
NOTE: the left and right side gear selectors have a different engagement design:
For The LEFT HAND SLIDER must ALWAYS ensure that the machine is FULLY STOPPED before attempting
to change gears! NEVER change the Left hand slider gears on a running machine!
For the RIGHT HAND SLIDER the gears select by engagement dogs, similar to a motorcycle transmission
design. These MUST BE SELECTED BY TURNING THE ARBOR BY HAND to allow the dogs to engage.
VARIABLE MOTOR SPEED MODELS ONLY:
The electronic variable motor speed control allows the motor speed to
be lowered for further flexibility for adjusting the cutting speed to suit
the size of cutter and type of material. Simply turn the thumb wheel to
raise or lower the motor speed electronically.
NOTE: whenever possible, it is always preferable to lower the speed
by changing the gear rather than lowering the motor speed. A
slower motor speed will have less cooling and somewhat less
torque so always try to keep the motor going as fast as possible.
Only lower the motor speed if you have no other option. (For
example: If you need the RPM at about 100/min, it is much better to use 1st gear at full motor speed
than to use 3rd gear at minimum motor speed.)
Avoid overheating the motor: When using the machine at or near maximum capacity with a slow motor
speed the motor will be at maximum stress and very hot. After each cut is finished, ALWAYS cool the motor by
running at no load at the maximum motor speed for a few minutes.
GEAR MAX. SPEED MIN. SPEED CUTTERS TAPS
1 120min
-1
35 min
-1
Up to 120mm (4-3/4") 25mm ( 1 in.) or less
2 220 min
-1
70 min
-1
55mm-70mm (2-1/8 to 2-3/4 in.) N/A
3 250 min
-1
80 min
-1
35~55mm (1-3/8 to 2-1/8 in.) N/A
4 450 min
-1
140 min
-1
35mm or less (1-3/8 in.) N/A
Variable Speed Wheel