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Foundation Drive Tool Ordering Information
Kelly Bar Adapters
Selecting the correct Kelly Bar Adapter is key to building
a proper Drive String.
Follow these two easy steps:
1) Remove the auger from the driver and carefully measure
the X and Y dimensions of the Kelly Bar.
2) Match the shape of the Kelly Bar and the X and Y dimensions
with the Kelly Bar Adapter charts below. The Y dimension on the Kelly Bar Adapter must be equal to or
greater than the Y dimension on the intended Kelly Bar.
A Note about Bolt Circles
Chance anchor installing tools are provided with appropriate bolt circles for the expected service. The torque limitations for the two standard bolt circles are given below.
Never exceed the rated torque of any Chance installing tool.
| Bolt Circle | Max. Torque |
| (6) 1/2" Grade 5 bolts on 51/4" B.C. | 10,000 ft.-lb. |
| (12) 5/8" Grade 2 bolts on 75/8" B.C. | 20,000 ft.-lb. |
5 1/4"- Bolt-Circle Kelly Bar Adapters for 10,000 ft.-lb. Maximum Installing Torque
Each of these Kelly Bar Adapters has six holes for 1⁄2" bolts on a 5 1⁄4" bolt circle and comes with six 1⁄2" Grade 5 bolts, nuts & lockwashers, Bent-Arm Pin with Coil Lock.
| Catalog Number | KellyBar Shape | KellyBar Dimension | Weight lb | ||
| X | Y | Z | |||
| 630016 | Square | 2 1/4" | 2 1/4" | 3 1/2" | 10 |
| 630017 | Square | 2 1/2" | 2 1/4" | 3 1/2" | 10 |
| 630013 | Hex | 2" | 5" | 6 1/8" | 10 |
| 630013A | Hex | 2" | 3 1/4" | 6 1/8" | 10 |
| 630012HD | Hex | 2 5/8" | 4 1/4" | 8 1/8" | 12 |
| 630011HD | Hex | 2 1/2" | 4 1/4" | 8 1/8" | 12 |
7 5⁄8"-Bolt-Circle Kelly Bar Adapters
for 20,000 ft.-lb. Maximum Installing Torque
Each of these Kelly Bar Adapters has twelve holes for 5/8"
bolts on a 7 5/8" bolt circle and comes with twelve 5/8" Grade
2 bolts, nuts & lockwashers, Bent-Arm Pin with Coil Lock.
| Catalog Number | KellyBar Shape | KellyBar Dimension | Weight lb | ||
| X | Y | Z | |||
| C303-0936 | Hex | 2 1/2" | 4 3/8" | 8 1/4" | 23 |
| C303-0937 | Hex | 2 5/8" | 4 3/8" | 8 1/4" | 23 |
| C303-0940 | Hex | 3" | 3 1/2" | 8" | 27 |
| C303-0955 | Square | 2 1/2" | 2 1/4" | 7" | 22 |
| C303-0958 | Square | 3" | 3 1/2" & 2 1/16" |
7" | 23 |
Universal Tools for Foundations
These tools fit Foundations with 9" to 131⁄2" bolt circles.
C303-0139 connects direct to a Kelly bar adapter with (6)
1⁄2" furnished bolts. C303-0684 includes (12) 5⁄8" bolts.
| Catalog Number |
Bolt Circle, Holes |
Approx. Weight, lb. |
| C303-0139* | 5 1/4", (6) 1/2" tapped holes | 18 |
| C303-0684** | 7 5/8", (6) 5.8" drilled holes | 49 |
*Maximum torque rating for C303-0139: 10,000 ft.-lb.
**Maximum torque rating for C303-0684: 20,000 ft.-lb. Coupling
C303-0684 to a Kelly bar adapter with a 51/4" bolt circle
requires use of T303-0166 adapter and limits tool’s maximum
torque rating to 10,000 ft.-lb.
Baseplate Drive Tool
Catalog No. C3031526
Fits on 10"-Square Baseplate Foundations for *20,000 ft.-lb. Maximum Installing Torque
This tool weighs approx. 60 lb. and has twelve holes on a 75/8" bolt circle, tapped for 5/8" bolts furnished with compatible Kelly bar adapters.
*Coupling to a Kelly bar adapter with a 51/4" bolt circle requires use of T303-0166 adapter and limits tool’s maximum torque rating to 10,000 ft.-lb.
Drive-Holes Tools
Fit on Foundations WITHOUT Baseplates for Installing Torques up to *20,000 ft.-lb.
Drive tools are provided to coordinate with each specified Drive-Hole style foundation design to meet installing torque requirements as well as drive-hole size and spacing.
*A typical tool is shown for 10,000 maximum torque rating coupled to a Kelly bar adapter with a 51/4" bolt circle.
For more information, please contact your Hubbell Power Systems representative.
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Hubbell Incorporated. All rights reserved. Because Hubbell has a policy of
continuous product improvement, we reserve the right to change design specifications
without notice.
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