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What Are Jaw Crushers? & How Do They Work?

by Michael McDonald
August 5, 2021
in Business
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What Are Jaw Crushers - How Do They Work
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A jaw crusher is a mechanical machine that is used to break down the rocks and crush them into smaller pieces. This large piece of equipment is widely used in mine and ore processing plants. Eli Whitey Black was the first inventor to develop this crusher in 1858 for crushing stones.

Its crushing action is mostly used in pit and quarry industries as well as in recycling processes where large materials need to be broken. There are many new, used, or second-hand available jaw crushers for sale out there.  You can choose one according to your need and capacity.

Here, we’ll discuss how a Jaw crusher works and what are its different types? Let’s go-ahead to know more!

How Does A Jaw Crusher Work?

Jaw crushers utilize mechanical pressure to apply compressive forces to reduce the size of larger rocks. Its structure is like that it has two crushing jaws. One jaw is movable while the other can’t move. These jaws work together to crush the materials by applying mechanical pressure. The jaws are joined in the vertical position and give a V-shaped structure. This V-shape makes an opening called a crushing chamber where the materials are put to be reduced.

Different sizes for jaw crushers are available. The size of a Jaw Crusher is measured by the top-opening of the V-shaped chamber. For instance, if a Jaw Crusher measures 50”    44” then 50” is its length from one jaw towards another, and 44” is the width across the two chambers.

Different Functions Of Jaw Crusher:

There are many applications of Jaw Crushers such as:

  1. It is used to crush different kinds of ores
  2. In construction industries, it is used to reduce building rubble into pieces
  3. It is used for rock ranging (from medium to hard rocks)
  4. Crushing large glasses
  5. Reducing the size of other hard materials

Principle Of Working:

Two different types of jaw crushers use a different type of working principle. As far as the single-toggle jaw crusher is concerned its moving jaw operates in an elliptical pattern. For a double-toggle jaw crusher, pendulum motion is seen. The eccentric shaft of the jaw crusher generates a compressive force which is later transferred to the crushing zone through the toggle plate system.

The whole system is very wisely designed. Spring pulling rods connect the whole system non-positively due to which even heavy loads can be handled by the centrifugal masses on the eccentric shaft.

The deep angle between the two jaws is of great benefit as because of it the material can be crushed notably once it gets entered into it. The final size of the crushed material can be controlled through adjustable crusher settings and suitable tooth form for the jaw. There is an adjustable wedge system for any adjustment of the crusher settings. The whole adjusting system of the machine is easily accessible even the wear out parts can be replaced in the event.

Jaw crushers exhibit a completely comprehensive system that has everything set in advance. The toggle plates in jaw crushers consist of replaceable temperature bars which require no maintenance. Moreover, the lubrication system is fit to provide sufficient grease to the bearing points.

Types Of Jaw Crushers:

There are two main types of jaw crushers mainly used in industry:

  1. Single-toggle jaw crusher (the eccentric shaft is pivoted directly on the swing jaw)
  2. Double-toggle jaw crusher (the eccentric shaft is pointed behind the swing jaw)

Beyond these two types, many other jaw crushers are available like bull-dog jaw crushers and force-feed jaw crushers, etc. but the reason for mentioning these two as the mainstream is that they are the most widely used jaw crushers in the mining industry.

Conclusion:

In light of the above discussion, the jaw crusher is a very important crushing machine used in the mining industry. There is not only a single type of it. But many types of jaw crushers for sale are available.

Michael McDonald
Michael McDonald
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