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Wheel Concentricity Gauge
Instructions
To check the concentricity of a wheel,
slide the wheel on the pin with the spoke side of the wheel
facing to the left. The gauge pin should ride on the center area
of the wheel tread.
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Depending on the diameter of your wheel
you may need to zero the gauge. To do this, loosen the indicator
set screw with the provided allen wrench and lightly tighten
the screw so you can move the indicator up and down with
light pressure on the set screw. Adjust the indicator up
or down until the indicator hand reads zero.
Lightly tighten the indicator set screw.
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The indicator reads .001 inches per division.
Rotate the wheel one turn and record the high and low reading
on the indicator.
For example, if the indicator reads –2 divisions
and plus one division then the wheel is out of round by .003.
The ultimate goal is zero reading movement as you rotate the
wheel.
The more a wheel is out of round, the more the wheel
will bounce as it rolls. |
If you have access to extra
wheels, use the gauge to find four wheels with the least amount
of deviation.
Or, you
can round your wheels by using our Wheel Shaver tool. |
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