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Static load rating is the maximum weight a caster can safely support while stationary — not moving. It's typically higher than the dynamic (rolling) rating for the same caster.
Useful for applications where equipment is loaded and then parked for extended periods, but shouldn’t be used to size a caster for equipment that regularly moves under load.
Storage racks, display equipment, and anything loaded once and left stationary for long stretches rather than moved frequently.
Using static rating to size equipment that moves regularly. If the equipment rolls under load more than occasionally, size to the dynamic rating instead.
Should I always use the higher static number?
Only if the equipment genuinely stays stationary under load most of the time — otherwise size to the dynamic (rolling) rating.
Is static rating listed on every product?
Not always separately — many listings show only the dynamic rating since that's the more conservative, generally applicable number.
