Trolley Trolley Type Push Maximum Load Capacity 20 000 lb Trolley Frame Material Cast Iron For Beam Shape Flat For Minimum Beam Flange Width 6 in For Maximum Beam Flange Width 12 in Headroom to Connecting Shaft Not Applicable Headroom to Mounting Point 7 5/32 in For Minimum Beam Height 6 in For Maximum Beam Height 12 in Includes Not Applicable Minimum Radius Curve 51 5/32 in Trolley Wheel Diameter 5 9/10 in Trolley Wheel Material Steel Compatible Series Not Applicable