Steering systems use steering wheels, linkages, gears and other components to control a vehicle's direction of motion. Hydrostatic systems use less mechanical parts. Power steering systems require multiple mechanical parts.
Steering systems assist in the turning capability of a vehicle. Friction is created between the tire and the road requiring much effort to turn the tire. The steering system is geared toward easing that motion. Mechanical and non-mechanical systems have been designed for this purpose.
Hydrostatic steering is an hydraulic steering system that does not require mechanical steering linkage. In place of mechanical linkage, a steering unit and steering cylinders along with flexible hoses are used. This steering unit is used in industrial vehicles, marine ships, constructional equipment, and servo-type systems where directional steering is needed.
A power steering unit consists of mechanical linkage in the form of a steering shaft, steering rack, gearbox and fluid pump. When the steering wheel is turned, the power steering rack uses the pump to supply fluid to ease turning. Power steering systems are used in personal vehicles such as cars.