Gear Contact Stress Calculator

Calculate AGMA surface contact stress (pitting resistance) for spur and helical gear pairs.

Transmitted tangential load.
N
Pitch diameter of the pinion.
mm
Gear face width.
mm
From AGMA tables. Typical spur: 0.08-0.15.
Uniform: 1.0, Moderate: 1.25, Heavy: 1.75.
Depends on quality and speed. 1.0-1.5.
Steel/steel: 191, Steel/cast iron: 162 √MPa.
√MPa

Results

AGMA Contact Stress-MPa
Contact Stress (metric)-MPa
References: AGMA 2001-D04 — Gear Rating; Shigley's Ch. 14