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394 RIMS, ARMS AND HUBS OF SPUR GEARS
P = circular pitch of the gear in inches.
F = width of the face of the gear in inches.
m = number of arms.
L~
-h-H —
Fig. 9
Example:
Calculate the arms in a gear of 80 inches diameter 6 inches
face and 2 inches circular pitch and 6 arms.
Solution:
*- v
80 X 2 X 6
-J 160 = 5.429 inches
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