Sauer-Danfoss Inc., together with its subsidiaries, engages in the design, manufacture, and sale of engineered hydraulic and electronic systems, and components that generate, transmit, and control power in mobile equipment worldwide. It offers closed circuit axial and bent axis piston hydrostatic transmissions for the propulsion of mobile equipment; open circuit piston pumps used to transform mechanical power from the engine to hydraulic power for various functions of the vehicle; geroller and gerotor motors used for propel and work functions; and hydrostatic steering units to convert steering wheel motion into hydraulic flow and pressure. The company also provides electronic controls, including microprocessor-based controllers, intelligent displays, joysticks, and electronic sensors, as well as develops and licenses software that helps its customers to integrate components into systems; and proportional valves, such as electro hydraulic valves for forestry and agricultural harvesting equipment, and mechanically actuated valves for construction equipment. In addition, it offers open circuit gear pumps and motors under the TurollaOCG brand name; cartridge valves and hydraulic integrated circuits under the Comatrol brand; directional control valves under the Valmova brand; inverters under the Schwarzmuller Inverter brand; and light duty hydrostatic transmissions, gear reduction drives, piston pumps, and wheel motors under the brand Hydro-Gear. The company sells its products directly or through distributors to original equipment manufacturers of mobile equipment, including construction, road building, agricultural, turf care, material handling, and specialty vehicle equipment. The company was founded in 1986 and is based in Ames, Iowa. Sauer-Danfoss Inc. is a subsidiary of Danfoss A/S.