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how work jaw crusher

Jaw Crusher

Jaw Crusher

Jaw crusher is the vital equipment in crushing industry.

Processing capacity:1-2200t/h

Feeding size:125-1200mm

Appliable Materials: Limestone, granite, pebbles, cobble, iron ore, basalt and all kinds of hard and soft ores with compressive strength not higher than 320 Mpa.

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jaw crusher manufacturers in china - ftm machinery

Jaw crusher has been updated for three times. There are different types and series of jaw crusher. The primary serie was researched and developed as the PE jaw crusher. In order to improve the quality of the jaw crusher, Henan Fote Heavy Mining Machinery which is a jaw crusher manufacturer in China actively introduced advanced technology from German to produce another serie of jaw crusher (HD) with a larger crushing ratio and higher output capacity. HD series of jaw crusher is better than PE jaw crushers, and it is also called concrete jaw crushers. After researching from the market and the feedback from users, FTM machinery developed the European version jaw crusher(CJ).

Comparing with the HD jaw crusher, the CJ has more advantages. It is assembled by the non-welded structure, so it’s easy to disassemble and transport. Besides, a motor is installed at the end of the machine. Therefore, the CJ jaw crusher has been popular among the majority of users. Besides, we also have many types of mobile crushers and crushers plants

1.Excellent casting engineering. Jaw crusher is made up with rack, seesaw, side guard, eccentric shaft and transmission. The eccentric shaft, made of high carbon steel, is the core part of the jaw crusher and has a large bending torque. The seesaw simulates the two movements of the animal to complete the material crushing operation

jaw crusher manufacturers in china - ftm machinery

Steep nip angle reduces wear on the jaw mold and accelerates material flow down the chamber, which reduces the operating costs. The stroke is enlarged from top to bottom, causing it to be the longest at the bottom of the cavity, which increases capacity and reduction ratio. Therefore, the jaw crusher can process the raw material highly in various operations

3.Easy operation and low failure rate. The jaw rock crusher is designed in a modular manner and can remotely monitor and adjust the settings of feeders, crushers, and conveyors. They can be installed in a few days, saving installation costs. It was equipped with a lubrication system, so it’s easy to work and maintenance

jaw crushers | mclanahan

Jaw Crushers are used to reduce the size of many different types of materials in many applications. The Jaw Crusher was first introduced by Eli Whitney Blake in 1858 as a double-toggle Jaw Crusher. Introduced in 1906, McLanahan’s Universal Jaw Crusher was one of the first modern era overhead eccentric Jaw Crushers. On the overhead eccentric style Jaw Crusher, the moving swing jaw is suspended on the eccentric shaft with heavy-duty double roll spherical roller bearings.

The swing jaw undergoes two types of motion: one is a swing motion toward the opposite chamber side (called a stationary jaw die due to the action of a toggle plate), and the second is a vertical movement due to the rotation of the eccentric. These combined motions compress and push the material through the crushing chamber at a predetermined size.

More than 110 years of engineering and customer service experience keep customers running to McLanahan to meet their production goals. McLanahan Jaw Crushers are proudly made in the USA and have imperial designs. With our grass roots design coupled with listening to customer needs for product enhancement over the years, McLanahan offers traditional hydraulic-shim adjustment Jaw Crushers as well as H-Series Jaw Crushers that feature hydraulic discharge setting adjustment, adjust-on-the-fly chamber clearing in the event the site loses power (once power is restored) and hydraulic relief for overload events with auto-reset.

Whether the traditional hydraulic-shim adjustment or the H-Series Jaw Crushers, both machines have an aggressive nip angle that provides consistent crushing throughout the entire crushing chamber, which leads to increased production and less downtime on maintenance.

jaw crushers | mclanahan

A Jaw Crusher uses compressive force for breaking material. This mechanical pressure is achieved by the crusher's two jaws dies, one of which is stationary and the other is movable. These two vertical manganese jaw dies create a V-shaped cavity called the crushing chamber, where the top of the crushing chamber is larger than the bottom. Jaw Crushers are sized by the top opening of the crushing chamber. For example, a 32 x 54 Jaw Crusher measures 32" from jaw die to jaw die at the top opening or gape opening and 54” across the width of the two jaw dies. 

The narrower bottom opening of the crushing chamber is used to size the discharge material. A toggle plate and tension rods hold the pitman tight near the bottom of the moving swing jaw. The toggle plate is designed to perform like a fuse and protect the crusher in the event that an uncrushable material enters the crushing chamber. As a rule, Jaw Crushers have a 6:1 or 8:1 ratio for crushing material. Still using the 32 x 54 Jaw Crusher example, the top size of the feed entering the crushing chamber has to follow the F80 rule that 80% of the top size feed material is smaller than the gape opening. Using the F80 rule with the 32 x 54 Jaw Crusher, the 32” gape opening equals a 26” top sized feed, and with the 6:1 ratio of reduction, the discharge setting would be around 4”

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