What is a Pitman in Jaw Crusher?
Pitman is the main component of a jaw crusher that forms the moving part of the crusher. It functions as the link between the stationary and the moving jaw. The pitman is responsible for transferring the motion of the eccentric shaft to the rest of the crusher components, such as the toggle plate and the swing jaw.
The pitman is typically made of cast steel or cast iron and is mounted on the eccentric shaft, which is supported by bearings on either side. The pitman rotates as the eccentric shaft rotates, causing the pitman to move up and down in a reciprocating motion. This motion is then transferred to the rest of the crusher components, which results in the crushing of the material.
The design of the pitman is an important factor in the efficiency and performance of a jaw crusher. A well-designed pitman will have a lower mass and a longer stroke, which will result in higher crushing forces and better utilization of the crusher’s power.
In addition to its role in transferring the motion of the eccentric shaft, the pitman also plays a key role in the safety of the jaw crusher. Many pitman designs incorporate safety features that prevent the crusher from becoming jammed or overloaded, which can cause damage to the crusher and potentially result in injury to the operator.
In summary, the pitman is a critical component of a jaw crusher that forms the moving part of the crusher. It is responsible for transferring the motion of the eccentric shaft to the rest of the crusher components and plays a key role in the efficiency and safety of the crusher.
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