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 in For Maximum Beam Flange Width 8 in Headroom to Connecting Shaft Not Applicable Headroom to Mounting Point 6 in For Minimum Beam Height 3 in For Maximum Beam Height 8 in Includes Not Applicable Minimum Radius Curve 35 3/8 in Trolley Wheel Diameter 3 1/10 in Trolley Wheel Material Steel Compatible Series Not Applicable