K01 Series — 8" (200 mm / 8 inch) Heavy Duty Caster Iron Core Polyurethane (PU) · Shore 95A · Galvanized 5.5 mm Bracket · No Spring (Rigid) 1. Product Overview The K01 8" (200 mm / 8 inch) is a heavy-duty industrial caster built around an iron-core polyurethane (PU) wheel in Shore 95A. With a load capacity of 500 kg per caster (2000 kg on a standard 4-caster system), it is the the largest and highest-capacity K01 size — built for the heaviest static and slow-moving loads in