RIDGID Combo Roll Groover User Manual
Page 22
Ridge Tool Company
20
975 Combo Roll Groover
Grooving roll and/or driving shaft worn.
Pipe length not straight.
Pipe end not square with pipe axis.
Pipe and drive shaft not parallel.
Pipe axis not offset
1
/
2
degree from driving roll axis.
Driving roll knurl plugged or worn flat.
Feedscrew not tight.
Turning ratchet wrong direction.
Inside of pipe has too much scale.
Excessive weld seam.
Not applying pressure to pipe.
Pipe end not square/deburr.
Feedscrew too tight.
Pipe and drive shaft not parallel.
Feedscrew too tight.
Replace grooving roll and/or drive shaft.
Use straight pipe.
Cut pipe end square.
Adjust stand to make pipe parallel.
Offset pipe
1
/
2
degree.
Clean or replace drive roll.
Tighten feedscrew with ratchet for every
revolution as per directions.
Turn ratchet in proper direction.
Clean inside of pipe.
Grind weld seam flush 2" from end of pipe.
Apply pressure to pipe.
(See Figure 10.)
Properly prep end of pipe.
Only advance feedscrew in
1
/
4
turn increments.
Adjust stand to make pipe parallel.
Only advance feedscrew 1/4 turn.
SYMPTOM
POSSIBLE REASONS
SOLUTION
Roll groove too narrow or
too wide.
Rolled groove not per-
pendicular to pipe axis.
Pipe will not track while
grooving/Groover will not
track on pipe while groov-
ing.
Pipe flared at grooved end.
Troubleshooting
Table III. Copper Roll Groove Specifications
1
2
3
4
5
6
7
8
A
B
C
D
T
Nom.
Tubing Outside
Gasket
Groove
Groove
Groove
Min.
Max.
Size
Diameter O.D.
Seat
Width
Dia.
Depth
Allow.
Allow.
Inches
A
+.03
+.00
Ref.
1
Wall
Flare
Basic
Tolerance
±0.03
–.000
–.02
Thick.
Dia.
2"
2.125
±0.002
0.610
0.300
2.029
0.048
DWV
2.220
2
1
/
2
"
2.625
±0.002
0.610
0.300
2.525
0.050
0.065
2.720
3"
3.125
±0.002
0.610
0.300
3.025
0.050
DWV
3.220
4"
4.125
±0.002
0.610
0.300
4.019
0.053
DWV
4.220
5"
5.125
±0.002
0.610
0.300
5.019
0.053
DWV
5.220
6"
6.125
±0.002
0.610
0.300
5.999
0.063
DWV
6.220
8"
8.125
+0.002/-0.004
0.610
0.300
7.959
0.083
DWV
8.220
1. Nominal Groove Depth is provided as a reference dimension. Do not use groove depth to determine groove acceptability.