Nylon wheel, hardwearing, wheel x width 200 x 50 mm, fixed castor. Supplied = assembled. Wheel diameter = 200 mm. Structure = fixed castor. Wheel material = plastic - nylon. Material of rim = nylon. Housing material = steel. Max. load at 4 km/h = 1200 kg. Type of mounting = with top plate. Wheel width = 50 mm. Overall height = 245 mm. Wheel bearing = ball bearing. Temperature resistance = -20 °C to +80 °C. Screw hole diameter = 11 mm. Hub length = 60 mm. Hub bore = 20 mm. Fixed castor plate dimensions = 135x110 mm. Swivel castor plate dimensions = 135x110 mm. Screw hole spacing = 105x75 - 80 mm. Housing surface = galvanised and chrome-plated. Hardwearing. Largely resistant to thinned acids and alkaline solutions. Temperature resistant from -20 °C to +80 °C. Steel housing, welded, with zinc chromate finish. Swivel bearings with double ball race. Live ring with labyrinth seal. With lubrication nipple, centre bolts screwed on and secured.