Calcolatrice Rapporto di Trasmissione — Formula
## Gear Ratio Fundamentals
Gears trade speed for torque (or vice versa) while transmitting rotational power.
### Formulas
**Gear Ratio = N2 / N1** (driven teeth / driver teeth)
**Output Speed = Input Speed / Gear Ratio**
**Output Torque = Input Torque x Gear Ratio** (assuming no losses)
A ratio greater than 1 is a speed reduction (torque multiplication). A ratio less than 1 is a speed increase (torque reduction).
Gears trade speed for torque (or vice versa) while transmitting rotational power.
### Formulas
**Gear Ratio = N2 / N1** (driven teeth / driver teeth)
**Output Speed = Input Speed / Gear Ratio**
**Output Torque = Input Torque x Gear Ratio** (assuming no losses)
A ratio greater than 1 is a speed reduction (torque multiplication). A ratio less than 1 is a speed increase (torque reduction).
Esempio Risolto
A 20-tooth driver meshing with a 60-tooth driven gear, input 1800 RPM at 50 N-m.
- Gear ratio = 60 / 20 = 3.0 (speed reduction)
- Output speed = 1800 / 3.0 = 600 RPM
- Output torque = 50 x 3.0 = 150 N-m (ideal)
- Actual torque is slightly less due to mesh efficiency (typically 95-99% per stage).