9
CAUTION: Never attempt to change gears on a running machine! Only adjust when the machine is
at rest.
For 3 speed models, Select the desired gear range by turning the gear selector either clockwise or
counterclockwise into the desired gear. It will usually be necessary to turn the spindle by hand a little to get it
to shift all the way.
For 4 speed models, turn the two gear selectors to the correct combination of A,B,C and D to reach the desired
speed range. (see the chart below).
3 SPEED MODELS (High RPM)
RECOMMENDED BIT Ø
Speed 1: n
0
550/min, n 345/min
152-250mm (6"-10")
Speed 2: n
0
1000/min, n 630/min
102-152mm (4"- 6")
Speed 3: n
0
1600/min, n 1000/min
40-102mm (1-1/4"- 4")
3 SPEED MODELS (Medium RPM) RECOMMENDED BIT Ø
Speed 1:
n
0
450/min, n 280min 180-300mm (7"-12")
Speed 2:
n
0
810/min, n 485/min
125-180mm (5"-7")
Speed 3:
n
0
1300/min, n 780/min
40-125mm (1-1/2" - 5")
3 SPEED MODELS (Low RPM)
RECOMMENDED BIT Ø
Speed 1:
n
0
350/min, n 220/min
280-350mm (11"-14")
Speed 2:
n
0
600/min, n 370/min
180-280mm (7"-11")
Speed 3:
n
0
1000/min, n 620/min
50-180mm (2"-7")
4 SPEED MODELS
RECOMMENDED BIT Ø
Speed 1:
AD n
0
385/min, n 225/min
300-400mm (12"-16")
Speed 2:
AC n
0
530/min, n 300/min
180-300mm (7"-12")
Speed 3:
BD n
0
975/min, n 565/min
125-180mm (5"-7")
Speed 4:
BC n
0
1340/min, n 780/min
40-125mm 1-1/2"-5")
( Recommended bit size based on average hardness concrete. Speeds will
vary with different material hardnesses.
For reinforced concrete, speeds will be signifigantly slower.)
4)MOUNTING TO A DRILLING STAND (NOT INCLUDED)
Warning: Do not attempt to mount to a rig that does not have a perfectly fitting mounting system.
The motor has a standard four bolt pattern for attaching a mounting spacer. Use a mounting spacer suitable for
the stand you are using to mount your drill motor to your stand. Tighten the four bolts evenly to 12Nm.
To mount to the stand, loosen the cradle lock bolt and place the mounting spacer squarely in the cradle. Then
tighten the cradle lock bolt firmly to 17Nm.
The rig may be anchored to the work piece in one of three ways, with a mechanical anchor, with a vacuum
base, or with a jack screw. (Follow the instructions provided with the rig.)
4 SPEED MODELS
Gear Selectors
3 SPEED MODELS
Gear Selector
