Catterpillar is the world`s leading manufacturer and exporter of construction and mining equipment, diesel and natural gas engines and industrial gas turbines. Catterpillar offers 519 sm stationary mount knuckle boom loader. Caterpillar has a full line of stationary mount loaders for a wide range of mill yard applications. Four models are available with onboard or remote power. Caterpillar stationary mount loaders are completely pre-wired, tested and ready for on-site electric hookup, including installation kits with the required fasteners for mounting to steel or concrete pedestals.