Solid rubber tyre, wheel x width 200 x 50 mm, fixed castor. Supplied = assembled. Wheel diameter = 200 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 = 205 kg. Type of mounting = with top plate. Wheel width = 50 mm. Overall height = 240 mm. Wheel bearing = roller bearing. Temperature resistance = -5 °C to +60 °C. Screw hole diameter = 11 mm. Hub length = 58 mm. Hub bore = 20 mm. Fixed castor plate dimensions = 137x115 mm. Swivel castor plate dimensions = 137x105 mm. Screw hole spacing = 105x75 - 80 mm. Housing surface = zinc plated blue passivated. Shore hardness = 85 A. On sheet steel rims. 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.