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Specifying AGMA Spur Gear, Helical Gear, and Herringbone Gear Backlash
Specifying mating gears backlash and tolerances, is determined by the operating velocity, lubrication, modes of operation and loading imposed on the mating gears.
The following table gives values for the AGMA Recommended
Backlash Range for Bevel Gear, and Hypoid Gears
Diametral Pitch |
Backlash (inches)
|
AGMA
Quality
7 - 13 |
AGMA
Quality
3 - 6 |
1.00 - 1.25 |
.020 - .030 |
.045 - .065 |
1.25 - 1.50 |
.018 - .026 |
.035 - .055 |
1.50 - 1.75 |
.016 - .022 |
.025 - .045 |
1.75 - 2.00 |
.014 - .018 |
.020 - .040 |
2.00 - 2.50 |
.012 - .016 |
.020 - .030 |
2.50 - 3.00 |
.010 - .013 |
.015 - .025 |
3.00 - 3.50 |
.008 - .011 |
.012 - .022 |
3.50 - 4.00 |
.007 - .009 |
.010 - .020 |
4.00 - 5.00 |
.006 - .008 |
.008 - .016 |
5.00 - 6.00 |
.005 - .007 |
.006 - .013 |
6.00 - 8.00 |
.004 - .006 |
.005 - .010 |
8.00 - 1.00 |
.003 - .005 |
.004 - .008 |
1.00 - 16.00 |
.002 - .004 |
.003 - .005 |
16.00 - 2.00 |
.001 - .003 |
.002 - .004 |
20 - 50 |
.000 - .002 |
.000 - .002 |
50 - 80 |
.000 - .001 |
.000 - .001 |
80 - Finer |
.000 - .0007 |
.000 - .0007 |
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