Caster Numbering System

When searching for a caster or wheel, a series of numbers are associated with that particular product to identify its makeup. For casters that include the series, caster type, diameter, face width, bearing type, and material.

For caster wheels that include the diameter, face width, bearing type, material, and wheel/bearing bore.  We’ve included easy reference guides below as PDFs that explain each number that makes up the part and the corresponding materials, specs, or components associated with that particular part.