Solid rubber tyre on sheet steel rim, wheel x width 280 x 70 mm, fixed castor. Supplied = assembled. Wheel diameter = 280 mm. Structure = fixed castor. Wheel material = rubber - solid rubber. Material of rim = sheet steel, bright zinc plated. Housing material = steel. Max. load at 4 km/h = 385 kg. Type of mounting = with top plate. Wheel width = 70 mm. Overall height = 320 mm. Wheel bearing = roller bearing. Temperature resistance = -5 C to +60 C. Screw hole diameter = 15 mm. Hub length = 75 mm. Hub bore = 25 mm. Fixed castor plate dimensions = 220x120 mm. Swivel castor plate dimensions = 175x175 mm. Screw hole spacing = 190x75 mm. Housing surface = zinc plated blue passivated. Shore hardness = 85 A. On sheet steel rim. For light to medium duty requirements. Very quiet on hard floors. Hardness 85 Shore A. Temperature resistant from -5 C to +60 C. Swivel bearing with double ball race, swivel bearing protection. Also available as electrically conductive models on request.