Roll Grooving Tips With Model 918-I; Grooving Short Lengths Of Pipe; Removing And Installing Groove Roll And Drive Shaft - RIDGID 918-I Manual

918-I Heavy Duty Roll Grooving Machine
Figure 9 – Grooving Pipe While Exerting Light Hand
Pressure Toward Operator
NOTE! Groove diameter should be measured using a di-
ameter tape. To decrease groove diameter (in -
crease groove depth), rotate the index depth ad-
justment knob one mark counter-clockwise. To in -
crease groove diameter (decrease groove depth),
rotate the depth adjustment knob clockwise.

Roll Grooving Tips with Model 918-I

1. If pipe tends to "walk off" drive roll, increase offset di-
mension (Figure 7).
2. If drive roll flange shaves pipe end, decrease offset di-
mension.
3. If pipe end flare is excessive, lower pipe end to level
with roll groover.
4. If pipe wobbles and/or "walks off" drive roll, raise pipe
end to level with roll groover.
5. Short lengths of pipe (under three feet) may require
slight pressure to maintain the
mension.

Grooving Short Lengths of Pipe

Without Stabilizer
1. Properly set-up pipe to ensure pipe is level and square
on the shoulder of the drive roll.
2. When grooving, exert pressure on the pipe towards
the operator (Figure 9).
Do not attempt to groove any pieces of
WARNING
pipe shorter than 8" (See Chart A). Increases risk of fingers
being crushed in the grooving rolls.
Do not reach inside of pipe. Keep hands
WARNING
away from sharp edges and burrs on end of pipe.
10
1 / degree offset di-
2
With Stabilizer
NOTE! Once stabilizer is adjusted for a selected pipe
diameter and wall thickness, it does not have to
be readjusted.
1. Properly set up pipe to ensure pipe is level and
square on the shoulder of the drive roll.
2. Engage hydraulic pump and bring groove roll (upper
roll) down until it contacts outside diameter of the
pipe.
3. Tighten down stabilizer roll until roll contacts outside
diameter of the pipe. Continue to tighten stabilizer
one full turn after making contact on outside diameter
of pipe (Figure 10).
Figure 10 – Adjusting Pipe Stabilizer
WARNING Do not reach across pipe to adjust stabi-
lizer.
NOTE! If pipe "walks off" of drive shaft during the roll
grooving operation, the stabilizer will need to be
further tightened 1
Do not use the pipe stabilizer on 8" or
WARNING
short er workpieces. Increases risk of fingers being crushed
in the grooving rolls.
Removing and Installing Groove Roll
and Drive Shaft
NOTE! As groove dimensions are determined by the roll
set geometry, specific roll sets are required when
grooving the following:
• 2" – 6" Schedule 10, 40
• 8" – 12" Schedule 10, 8" Schedule 40
• 2" – 6" Copper tubing (Types K, L, M, DWV)
• 1" Schedule 10, 40
• 1 1 / " - 1 1 / " Schedule 10, 40
4 2
Make sure machine is unplugged from
WARNING
power source before changing the roll sets.
/ turn.
2
999-998-676.10_REV. C