Standard of curvature and shape of drums and pulleys for conveyor and flat belts
Shape of conical rollers for guiding conveyor belts
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b = drum width bc = width of the cylindrical part bo = band width h = conicity |
Length of cylindrical area bc
bc = bo / 2
Pulley width b
b = bo x 1,1
Crown bow h
h = (d + 100) / 450 mm
Curved pulley shape for power transmission belts with a polyamide core
To calculate the radius of curvature of the pulleys, apply the following formulae:
| Pulley Diameter | Crown height h |
| mm | mm |
| up to 112 | 0.3 |
| over 112 up to 140 | 0.4 |
| over 140 up to 180 | 0.5 |
| over 180 up to 224 | 0.6 |
| over 224 up to 355 | 0.8 |
| over 355 up to 500 | 1 |
| over 500 up to 1000 | 1.2 |
This information is given as an indication, we could not be held responsible for any misuse of this information.