This Metal Ball Caster Wheel is strong enough to support most small robots while still providing a smooth rolling action.
Originally designed for use as an industrial ball transfer unit, this item makes a great caster for small robots. The metal ball rotates very smoothly on a set of ball bearings in any direction. The industrial quality design can support a significant amount of weight. The steel case is easy to mount with two 4mm holes that are 40mm apart.
This ball caster makes an excellent choice for small robots that are too heavy for lightweight casters. Buildings of micro sized robots should consider one of our lighter weight caster wheels.