Click Here For Information on Bolt Circle Drilling Using Small Drills;
To Solve for Values Required by Your Bolt Circle Program,
fill in the (3) known values.
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Finished hole dia. - .050 = |
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Drill size = |
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Web between holes = |
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(1) No. of holes = |
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(2) Dia. of bolt circle = |
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(3) Angle of 1st hole = |
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(4) Angle of last hole = |
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Actual rough hole dia. = |
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Due to value rounding in no. of holes, the actual rough hole dia. may differ slightly from the original finished hole dia. - .050.
If necessary, you can compensate for this by changing values in
finished hole dia. - .050, or drill size, and re-compute.You can print off your results by printing page one of these pages.
Created: 06/16/2001
Last Rev: