50mm

Wheel coated with polyurethane, low-noise operation, low rolling resistance, good floor preservation, high abrasion resistance, high cut and tear propagation resistance, non-marking, very good chemical connection with the rim. Rim of mechanical cast iron. Hub on shielded ball bearings with central spacer. Heavy duty castor in zinc-chromium plated pressed steel turning on double rim of balls in temperate thrust bearings. Assembled with self-locking nut and plastic dust protection.

Wheel made of high-quality, impact-resistant nylon, very low rolling and swivel resistance, smooth running performance on even floor, high abrasion resistance. Hub on plain bore. Medium duty castor in zinc-chromium plated pressed steel turning on double rim of balls.