Polyurethane tyre on aluminium rim, wheel x width 200 x 50 mm, swivel castor with double stop. Supplied = assembled. Wheel diameter = 200 mm. Structure = swivel castor with double stop. Wheel material = polyurethane (PU) - elastic. Material of rim = aluminium. Housing material = steel. Max. load at 4 km/h = 300 kg. Type of mounting = with top plate. Wheel width = 50 mm. Overall height = 235 mm. Wheel bearing = ball bearing. Temperature resistance = -5 C to +80 C. Swivel castor offset = 54 mm. Screw hole diameter = 11 mm. Hub length = 60 mm. Hub bore = 20 mm. Fixed castor plate dimensions = 135x114 mm. Swivel castor plate dimensions = 135x110 mm. Screw hole spacing = 105x75 - 80 mm. Housing surface = zinc plated. Shore hardness = 75 A. On aluminium rims Non-marking due to special composition. Hardwearing and cut resistant. Hardness 75 Shore A. Temperature resistant from -5 C to +80 C. Swivel bearing with double ball race, swivel bearing protection.