Trolley Trolley Type Push Maximum Load Capacity 4 000 lb Trolley Frame Material Cast Iron For Beam Shape Flat For Minimum Beam Flange Width 3 5/8 in For Maximum Beam Flange Width 8 in Headroom to Connecting Shaft 10 1/8 in Headroom to Mounting Point 5 11/16 in For Minimum Beam Height 6 in For Maximum Beam Height 24 1/2 in Includes Not Applicable Minimum Radius Curve 35 3/8 in Trolley Wheel Diameter 3 1/10 in Trolley Wheel Material Cast Iron Compatible Series Not Applicable