Safe working load – 500 kg to 20,000 kg; crane control – from floor through pendant push buttons, optionally through radio remote control/cabin with master control; power supply system – to hoist and cross travel through trailing cables/drag chain to crane through shrouded bus bars/trailing cable/MS angle iron conductors/bare copper conductors (depending on customers’ choice and application); motors – squirrel cage and slip ring motors based on application requirements, built-in separator electrically operated fail safe brakes for all three motions; motors with 'F' class insulation provided in all motions; class of duty/standards – equivalent to IS 3938; speeds – selected depending on client specifications/applications/shed dimensions; and drive system – drive through squirrel cage induction geared motors with built-in fail safe brakes.