Center-loading flat or round cable trolleys made of plastic for lighter cable selections. Flanged guided plastic rollers for simple I-beam applications. Two, three and four rollers. These cable trolleys generally run on the same I-beam as the electricity-powered consumer.Main applicationsElectric chain hoists, e.g., on swiveling cranesTravelling hoistsStandard cranesTransport systemsElectricity and air supply for machineryTravel speed max. 1) [m/min]: 50 [164 ft/min]Load capacity/trolley max. 1) [kg]: 20 [44.1 lb]Main rollers diameter [mm]: 40 [1.57"]Ambient temperature [°C]: -20 ... +60 [-4° F to 140° F]Applications: indoor / outdoorI-beam: parallel flange / tapered flange1) depending on roller size/ roller material