Rollers deflection has two variations:
- Dual-end supported rollers (i.e., like a bridge supported from both sides of the river or valley).
- Cantilevered supported rollers (i.e., like a diving board, supported from one side, but unsupported on the other end).
In dual-supported rollers, the bending and deflection of the roller shell will have the greatest effect on the web.
In cantilevered rollers, deflection of the shaft or cantilevered support beam is most important.
In each case, deflection is reduced by either reducing the load on the bending element or increasing bending resistance.