Gantry Cranes
A gantry crane gives you overhead lifting anywhere you need it, without tying into the building structure. Freestanding on casters or fixed in place, it moves engines, dies, motors, and awkward loads that no jack or hoist stand should handle.
Match the capacity to your heaviest lift and the span to the footprint you have to clear, then decide between steel for outright strength or aluminum for a frame one person can reposition. Total-locking casters hold the crane still under load; V-groove casters run it along a track.