Axial Compensation

Axial compensation allows the designer to place the center of the belt over the center of the pulley while taking the camber of the material or the design of the system into consideration. 

Ideally, the shaft adjustment should allow the center of actuation of the shaft to pass through the center of the pulley width.  This assures each edge of the pulley moves equally and oppositely.  The twisting action of the pulley face changes tension on the belt edges to balance the edge tension and stabilize the tracking of the belt.

Pulley axis adjustment can be accomplished by adjusting pulley shaft pillow blocks left or right, up or down. Alternatively, a pulley shaft may be assembled to a pivoting yoke.  A similar axial adjustment can be accomplished using a Belt Technologies Independently Steerable Pulley (U.S. Patent #5,427,581).

Learn more about Forced Tracking