Three-point linkage parts are essential components of a tractor’s rear hitch system that allow for the attachment and operation of various implements. The three-point linkage system, also known as the three-point hitch, was developed by Harry Ferguson and is widely used in modern agricultural tractors. The system consists of three main components:
1. Lower Link Arms: The lower link arms, also called lower draft arms or lower lift arms, are sturdy, adjustable arms that extend rearward from the tractor’s rear axle or transmission housing. These arms connect the tractor to the implement being towed. They are typically equipped with adjustable ball ends or clevises, which allow for easy attachment to the implement’s hitch points.
2. Top Link: The top link, sometimes referred to as the center link, is a movable link that connects the upper portion of the implement to the tractor. It is attached to the tractor’s upper hitch point and can be adjusted in length to control the implement’s angle and height relative to the ground. By changing the length of the top link, the operator can ensure that the implement remains level during operation.
3. Stabilizer Chains: Stabilizer chains, also known as sway chains or turnbuckles, are used to provide lateral stability to the attached implement. These chains connect the lower link arms to the tractor’s chassis or rear axle. By adjusting the tension in the stabilizer chains, the operator can limit the side-to-side movement of the implement during operation, ensuring smoother and more controlled performance
Together, these three-point linkage parts form a versatile and reliable system for connecting and controlling a wide range of implements, such as plows, cultivators, mowers, and more, making them indispensable in modern tractor operation.