Casters are a collective term that includes activities and fixed casters. The movable caster is also called the universal wheel. Its structure allows 360 degree rotation; the fixed caster has no rotating structure and cannot rotate. Usually, the two casters are generally used together. For example, the structure of the trolley is the front two directional wheels, and the rear side is close to the push armrests are two universal wheels.
The movable caster is also called the universal wheel. Its structure allows 360 degree rotation; the fixed caster has no rotating structure and cannot rotate. Usually, the two casters are generally used together. For example, the structure of the trolley is the front two fixed wheels, and the rear side is close to the push armrests are two universal wheels.
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