How to calculate load capacity to let the caster serve you longer time ?

Load capacity include static load capacity and dynamic load capacity.
When we refer to the load capacity ,it is dynamic load capacity.

For example ,assuming that one caster load capaicty 100kg,one trolley will require 4 casters,then the trolley will support max 300kg =3pcsX100kg ,not 400kg.

In this way,we promise quality,and the caster will serve you longer time.
When we confirm requirements with customers,the load capacity is very important point.
We can also test load capacity for free according to customers’ requirements.