electric motor driven trolley - capacities 1/4 to 3 tons - adjustable to fit wide range of beam flange widths - forms and integral hoist and trolley combination - nema-4 push button, cable with steel strain relief-standar......electric motor driven trolley - capacities 1/4 to 3 tons - adjustable to fit wide range of beam flange widths - forms and integral hoist and trolley combination - nema-4 push button, cable with steel strain relief-standard - single and two-speed models - choose a wide range of options and accessories rigid mount trolleys capacities: 1/4 to 6 ton these rigid mount trolleys are designed especially for use with lug suspended hoists. the trolleys attach directly to lug brackets on hoists, thereby forming integral trolley-hoist combinations, offering close headroom dimensions-making the trolley-hoist ideal for hoisting applications where distance from floor to ibeam is limited. the trolleys are of all steel construction to provide maximum strength.wheels have hardened treads, insuring long life, and operate on ball bearings for easy travel. on hand geared models, the hand chain operated wheel turns a pinion which meshes with wheel gears for ease of operation and accurate spotting. the chain guide keeps the chain aligned with the wheel and helps prevent fouling. the wheel gears and drive pinion have machine cut teeth. anti-tilt rollers are provided on hand geared trolleys, as well as the 1-ton push type for extended hand chain wheel hoist, to eliminate tilting of trolley on beam when operating with light load or without load.