Jaw Crusher

Jaw crushers play a vital role as primary crushers in the crushing process, facilitating the production of material suitable for subsequent stages. Their mechanism involves a fixed and moving jaw, with the latter mounted on a pitman, facilitating a reciprocating motion.

How does a Jaw Crusher Work?

Jaw crushers are mainly used as primary crushers. Their main purpose is to produce material that can be transported by belt conveyors to the next crushing stages. The crushing process takes place between a fixed and a moving jaw. The moving jaw dies are mounted on a pitman that has a reciprocating motion. The jaw dies must be replaced regularly due to wear.

Types of Jaw Crushers

Single Toggle Crusher

In the single toggle jaw crusher, an eccentric shaft is on the top of the crusher. Shaft rotation causes, along with the toggle plate, a compressive action.

Double Toggle Crusher

A double toggle crusher has, basically, two shafts and two toggle plates. The first shaft is a pivoting shaft on the top of the crusher, while the other is an eccentric shaft that drives both toggle plates. The moving jaw has a pure reciprocating motion toward the fixed jaw.

The chewing movement, which causes compression at both material intake and discharge, gives the single toggle jaw better capacity, compared to a double toggle jaw of similar size. The jaw crusher is reliable and robust equipment, and therefore quite popular in primary crushing plants.