Forming The Roll Groove; Roll Grooving Tips With 918 - RIDGID 918 Series Operator's Manual

NOTE! Upper roll should only touch the pipe surface.
Care must be taken not to penetrate pipe surface
with upper roll by applying excessive pressure.
2. Turn down the indexed depth adjustment knob (clock-
wise) until it stops against the top of the machine.
3. Back the depth adjustment knob off one turn. (Figure
14)
Figure 14 – Close-Up of Depth Adjustment Knob Backed
Up with Gap Between Bottom of Knob and
Casting

Forming the Roll Groove

CAUTION Pipe wall thickness cannot exceed the max-
imum wall thickness specified in the "Pipe Max i mum
and Minimum Wall Thickness" Table II. Do not use to
groove 8" schedule 40 steel pipe harder than 150 BHN.
1. Flip the directional switch from OFF and step on
power drive or threading machine foot switch while ap-
plying downward pressure on the 918 pump handle.
Allow one full pipe rotation between quarter strokes of
the pump handle.
If pipe begins to "walk off" the drive roll,
WARNING
stop the machine and check "Pipe Set-Up" procedure.
2. To help prevent "walking", apply pressure on outside of
pipe with right hand: away from operator when running
the power drive or machine in FORWARD mode
(Figure 15) ; toward operator when running the power
drive or machine in REVERSE mode (Figure 16)
Keep hands away from the end of pipe.
WARNING
Do not reach inside pipe end. Will prevent being cut on
sharp edges and burrs.
NOTE! Do not overfeed upper groove roll. Maintain con-
stant downward pressure, pausing to allow one
pipe revolution per quarter stroke of the pump
handle.
3. When the depth adjustment knob contacts the ma-
chine casting, allow two complete pipe revolutions
to even out groove depth.
4. Release foot switch and retract upper groove roll by
1.800.561.8187
918 Roll Groover
www.
placing the pump release lever in the RETURN posi-
tion (toward operator).
5. Check groove diameter before proceeding with addi-
tional grooves.
Figure 15 – Applying Pressure on Pipe with Power Drive
Figure 16 – Applying Pressure on Pipe with Power Drive
NOTE! Groove diameter should be measured using a
Diameter - tape. To increase groove depth, rotate
the index depth adjustment knob one mark count -
er clockwise. To decrease groove depth, rotate the
depth adjustment knob clockwise.
6. Periodically check groove with a Diameter-Tape or
similar measuring device.

Roll Grooving Tips with 918

1. If pipe tends to "walk off" drive roll, increase offset di-
mension. (Figures 12 & 13)
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.
Ridge Tool Company
.com
in FORWARD Mode
in REV Mode.
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