Efficiency and Thrust
The efficiency (η) at which the screw transfers a torque into thrust is obtained from the following equation.
| η | Efficiency |
|---|---|
| α | Lead angle |
| μ | Frictional resistance |
Fig.4 shows the result of the above equation.
The thrust generated when a torque is applied is obtained from the following equation.
| Fa | Thrust generated (N) |
|---|---|
| T | Torque (input) (N･m) |
| R | Lead (mm) |
