Enter known or required input in mm or inches,
|Driver Pulley Pitch Diameter:||Variable|
|Driven Pulley Pitch Diameter:||Variable|
|minimum wrap angle:|
|Center to Center Distance:||Fixed|
Belt Wrap Angle
The above drawing shows how the minimum belt wrap angle is affected by the length of the belt when a large and small pulley are used in an application. The blue belt covers more of the circumference of the smaller pulley than the red belt giving better grip on the pulley thereby allowing less slippage.
An idler is often added in situations where a short belt must be used to increase the wrap angle on a pulley.