Specifications

108
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MANUAL WELDING
Ground Clamps
Heavy Duty Rotary Ground Devices
Tweco
®
Roto-Ground is a highly efficient device for grounding weldments while being
rotated on turning rolls or positioners. The 2" shaft shoulders up to a steel nut which the
user welds to his rotating work or fixture. Tweco Roto-Grounds have no brushes, springs or
mercury. A simple tension adjusting bolt provides maximum efficiency.
Roto-Ground Clamps
Ideal for high amperage grounding.
Amperage Cable Number of Heads Shaft Stud Length Part No. Stock No.
400 1 - 4/0 1 3/4" NC --
GCRG-140
9210-1314
400 1 - 4/0 1 3/4" NC 8" (203 mm)
RG-140
9250 -1114
600 2 - 3/0 1 1-1/8" NC 10-1/4" (260 mm)
RG-230
9250 -1123
800 2 - 4/0 1 1-3 /8" NC 10-5/8" (270 mm)
RG-240
9250 -1124
1500 4 - 4/0 2 1-3/8" NC 10-5/8" (270 mm)
RG-440
9250 -114 4
2000 6 - 4/0 3 1-3/8" NC 10-5/8" (270 mm)
RG-640
9250 -1164
RG-440
A-14-24
2-5
RG-240-11
GCRG-140
Roto-Ground Replacement Parts
Description
RG-140
Part No. / Stock No.
RG-230
Part No. / Stock No.
RG-240
Part No. / Stock No.
RG-440
Part No. / Stock No.
RG-640
Part No. / Stock No.
Head
RG-140-2-0
9922-2103
--
RG-240-4-0
9922-2124
RG-240-4-0
9922-2124
RG-240-4-0
9922-2124
Head Shaft
RG-140-2
9922-2102
RG-230-2
9922-2112
RG-240-2
9922-2122
RG-440-2
9922-2132
RG-640-2
9922-2142
Work Attachment Nut
RG-140-5
9922-2105
RG-230-5
9922-2115
RG-240-5
9922-2125
RG-240-5
9922-2125
RG-240-5
9922-2125
Fibre Cover --
RG-240-7
9922-2127
RG-240-7
9922-2127
RG-240-7
9922-2127
RG-240-7
9922-2127
Roto-Ground Accessories
Description
Part
Number
Stock
Number
Lubricating Cup
RG-240-11
9922-2129
Ball-Point Cable Connection Screw
A-14 -24
9910-2424
Special Shaft Lubricant
1Z-L
990 0-1123
Fibre Cover Screw
2-5
9940-2125
Tweco Shaft Lubricant
An electrical conductive grease to be used as a lubricant for roto-grounds and may be used when
making mechanical connections with copper or aluminum cables. Effective as a lubricant on
sliding or moving electrical contacts such as switches and rotating grounding devices. Apply
generously to contact area from 1 oz (29.6 mL) or 8 oz (237.0 mL) plastic bottles. Reduce electrical
resistance by as much as 40 to 50%
Description Part No. Stock No.
1 oz (29.6 mL) Plastic Squeeze Bottle
1Z-L
990 0-1123
8 oz (237.0 mL) Plastic Squeeze Bottle
8Z-L
990 0-1124
1Z-L
8Z-L
Manual Welding Products
GROUND CLAMPS