Power Transmitted by Belt Drive:

The power transmitted through the belt based on the tension on the two sides and the belt speed.

Consider         T₁ is the tension on the tight side in 'N'

                       T₂ is the tension on the slack side in 'N', and

                       V is the speed of the belt in m/sec.

Then power transmitted through the belt is given through

Power P = (T₁  - T₂ ) V

= ((T₁ - T₂ ) V)/1000  kW                    . . . (8.10)

If belt is on the point of slipping.

                                         . . . (8.11)

The maximum tension T₁ based on the capacity of the belt to endure force. If permit able stress in the belt is 'σ_t' in 'Pa', that means N/m², then

T₁  = (σ_t  × t × b) N                                                             . . . (8.12)

Here t is thickness of the belt in 'm' and b is width of the belt also in m.

The above equations may also be utilized to find out 'b' for given power and speed.