Helical Gear Design Calculator

Calculate helical gear geometry, forces, and AGMA bending/contact stress for power transmission gear pairs.

Standard module in normal plane. Common: 1,1.5,2,3,4,5 mm.
mm
Number of teeth on the smaller gear (pinion).
Number of teeth on the larger gear.
Helix angle. Typically 15-30°.
degrees
Power to be transmitted.
kW
Rotational speed of the pinion.
rpm

Results

Pinion Pitch Diameter-mm
Gear Pitch Diameter-mm
Tangential Force-N
Axial Force-N
Radial Force-N
Gear Ratio-
References: AGMA 2001-D04; Shigley's Ch. 14 — Helical Gears