About Caster Type
There are two kinds of caster&wheel: fixed caster and swivel caster. Swivel caster can be 360-degree rotating. Fixed caster doesn’t have
rotating structure, it can’t rotate. Usually we use fixed caster and swivel caster together. For example, for the hand trolley, we use two fixed
caster in the front side, and two swivel caster in the rear side.
A caster housing and a wheel make a caster. Caster is used to install under the equipment to make it moves smoothly.