Considerations When Choosing Roller Capacity

Rollers should ideally be used on solid surfaces such as steel so the weight is equally divided across each load wheel.

When operating 4 rollers on uneven surfaces such as concrete, select a roller with double the mathematical roller capacity to safeguard against overloading due to the load rocking and shifting. If operating more than 4 rollers, carefully select suitable roller capacity to prevent overloading in case load rocks on uneven surfaces and shifts weight.


Example: An equally distributed load of 40 tons, translates into 20 tons to be supported on each side


If the load rocks on an uneven surface, one roller looses contact with the load and the weight shifts to the closest roller

Capacity needed: 10 tons each roller

Capacity needed is doubled: 20 tons each roller


Wheels can be point-loaded when travelling over reccesses and uneven surfaces.

...or when hitting an obstacle

Side forces such as wind may cause uneven weight distribution on rollers resulting in possible side/ overloading.

Consider selecting higher capacity rollers to offset the hazards of point-loads, uneven weight distribution, and side forces.