Gears: determining tooth loads and strength calculations : Determining gear loads

Determining gear loads
Gears: determining tooth loads and strength calculations

Author : Georges HENRIOT

Publication date: October 10, 2002 | Lire en français

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1. Determining gear loads

Adopted units

·Length: generally millimetre (mm)

·Time t: minute (min) and second (s)

·Mass: kilogram (kg)

·Force F: newton (N) or decanewton (daN)

·Torque C: metre · newton (m · N) or metre decanewton (m · daN)

·Stress, pressure: bar; 1 bar = 0.1 N/mm ² or: hectobar (hbar) = 1 daN/mm².

·Power P: watt (W) and kilowatt (kW)

Straight-toothed parallel gears (figures 1 and 2)

The pinion is assumed to be driving. Its action on the driven gear results in a force F_n which we'll assume is concentrated in the middle of the tooth width and directed along the common normal to the teeth, i.e. along the line of action...

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Determining gear loads