Trolley Trolley Type Push Maximum Load Capacity 6 000 lb Trolley Frame Material Cast Iron For Beam Shape Flat For Minimum Beam Flange Width 4 in For Maximum Beam Flange Width 8 in Headroom to Connecting Shaft 8 1/4 in Headroom to Mounting Point 2 11/32 in For Minimum Beam Height 8 in For Maximum Beam Height 24 1/2 in Includes Hanger Plate Hanger Shaft Washers Minimum Radius Curve 55 1/8 in Trolley Wheel Diameter 4 1/10 in Trolley Wheel Material Steel