Calculating Required Castor Load Capacity

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Please note that this is a basic rule and only applies to the load applied to the castors from above.   It does not take into consideration floor condition, outside forces, uneven loading and operator abuse.   If you feel that the situation you are using the castors in may be effected by one or some of these then please either consider a larger or stronger castor.   Please don't hesitate to contact us first for advice.

Calculating Required Castor Load Capacity

It is important that you make the right castor selection as different types of Castors accept different loads.

If you are fitting your castors to any objects like a trolley for example you need to ensure they are built to deal with the weight.

Use the following calculation to ensure you include all of the weight that the castor will need to bear:

Load capacity of castor = Weight of equipment + trolley / 3


For example a trolley that is carrying 500kg and weighs 100kg.  The castors would have to safely carry 600kg.  We would divide the 600kg by three to give a safe working load that the castor has to carry of 200kg each (at least).


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