Phenolic

Expansion stem casters are designed to mount casters into open tubing fixtures. Turning of hex nut beneath the lower raceway on the caster expands the  rubber adapter inside of the round or square tubing for a tight fit. There are various stem sizes available which individually have a range of  tubing sizes the stem will fit into.

Phenolic casters and wheels are an economically viable solution for many heavy duty industrial caster applications. These are a popular go-to option for many applications such dumpsters, facility carts, workbenches, mobile louvered panels and countless other industrial and mobile carts or machines.