Specifying AGMA Bevel Gear and Hypoid Gear Backlash

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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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