Round belts
Technical application data
Power transmission
Power transmission at 180° wrapping angle and 8% elongation at fitting.
The values shown in the diagram are achieved when the recommended groove shape is employed and the pulley diameter is not less than the smallest permitted value.
For round belts of polyurethane elastomer, hardness 87 Shore A
Diameter-dependent values
Recommended form of execution for the pulley
The dmin minimum pulley diameters permitted were established at 22°C. Lower temperatures can require larger pulley diameters.