Balancers and Positioners by Ingersoll Rand AIR BALANCERS allow users to not only lift the load but also “float"; the load, allowing for precise manual movement and placement without the “jogging"; required with traditional hoists. Air balancers operate within a capacity range of 50 to 2000 lb (22 to 909 kg). INTELLIGENT LIFTING DEVICES remove the need for up and down controls by sensing user force input and translating it to precise vertical motion. These devices are ideal for applications where hands-on load control is required of loads up to 1000 lb (455 kg). MECHANICAL SPRING BALANCERS are for applications where a constant weight travels a relatively short vertical distance (i.e. power tools, weld guns). These balancers cover weights up to 363 lb (165 kg).