Worm Gear Efficiency Calculator

Calculate efficiency and output torque for worm gear drives.

η = cos(φ_n) − μ × tan(γ) / (cos(φ_n) + μ × cot(γ))

Lead Angle γ = arctan(m × z₁ / d₁)

Worm Starts (Z₁)

Worm Gear Teeth (Z₂)

Friction Coefficient (μ)

Normal Pressure Angle (φ_n), °

Module (m), mm

Worm Pitch Diameter (d₁), mm

Input Torque (T₁), Nm

Gear Ratio-

Efficiency-

Output Torque-