Trolley manoeuvrability refers to the ability of a trolley to be moved more or less easily during use. The limited space available inside some production departments or particularly winding routes that sometimes connect on work unit to another may require special trolley manoeuvrability characteristics to make operator tasks easier.
Swivel castors allow the trolley to rotate and the greater the castor offset (i.e. the distance between the bracket rotation axis and the wheel rotation axis), the easier the rotation. However, though it does guarantee excellent manoeuvrability, excessive offset may cause the castor to oscillate along straight routes (Swimmy effect).
Fixed castors do not allow the trolley to change direction but do guarantee directionality. In any case, the fixed castors must be mounted so that they are perfectly parallel to each other.
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