V-Belt Power Transmission
V-Belt Power Transmission
A belt transmits power through the difference between its tight- and slack-side tensions acting at belt speed.
The power is P = (T_1 − T_2)·v. where T_1 and T_2 are the tight- and slack-side tensions and v the belt speed.
Inputs
T_1 := 1.2 kN=1200 N
T_2 := 0.4 kN=400 N
v := 15 m/s=15 m/s
Multiply the net driving tension by belt speed.
P := (T_1 - T_2)·v=12000 W
Results
A higher speed or a larger tension difference transmits more power, but the tight-side tension is limited by belt strength and pulley pressure.
Assumptions & limitations
- No belt slip.
- Tensions along the belt.
- Centrifugal effects neglected.