Calculating Spur Gear Strength Proportions

Input values:

Input power P ₁

Input speed n ₁

Gearing ratio i

Gearing efficiency η

Calculated values

Output: P 2 = P 1 η

Output speed:

Metric units

Input moment:

Tangential/circumferential force:

Circumferential speed:

Resonance speed:

ANSI (English) units

Input moment:

Tangential/circumferential force:

Circumferential speed:

Resonance speed:

Output moment

M k2 = M k1 i η

Radial force

F r = F t tg α tw

Axial force

F a = F t tg β

Normal force