Tie Rod
Tie rod is used in the commercial vehicles, agricultural vehicles and special-purpose vehicles. In the systems defined as rigid axle system, the function of centre rod can be described in terms of long tie rod (drag link) and short tie rod.
Long tie rod (drag link)
Long tie rod transmits the forces transmitted by short tie rod to the axle located on the other side. Long tie rod connected to control arm and right/left rods transmits the force of control arm to the rods. It is used for transmitting the steering forces to the front wheels and for optimal roadholding. Long tie rod provides a precise steering and secure driving. A centrally located part allows for optimal adjustment of both wheels.
Short tie rod
Short tie rod directs the steering force initiated in the steering gearbox, finally transmitting force of pitman arm to the wheel. Short tie rot connects the joint to the idler arm. It acts like a joint which transmits left or right motion of control arm backwards and forwards.
In addition, 3 tie rods, which are connected to the centrally located joint, are used in the axles that have front independent suspension system.