Jaw Crusher and Impact Crusher are common crushing equipment in the crushing market., but a lot of people especially the people who have just get into this industry still have many questions, they don’t understand what is different between them. Today, let’s talk about the difference between these two machines in practical application.
Henan Dewo Machinery is a professional crusher equipment manufacturer and our main products are: Jaw Crusher, Impact Crusher, VSI Sand Maker Machine, Hydraulic Cone Crusher, Simons Cone Crusher, Spring Cone Crusher and any kinds of Mobile Crushing Plant.
The obvious differences between jaw crusher and impact crusher are in structure and working principle. The jaw crusher works as a curved extrusion, the material is squeezed and crushed in the crushing chamber composed of moving and fixed jaw plate. The impact crusher works as impact crushing, the material is repeatedly impacted and broken between the rotor (board hammer) and the impact plate.
The working principle is easy to understand. Now we focus on the differences between them in actual production.
1. Scope of Application
1) Hardness of the Material
Jaw Crusher can crush most of material which compressive strength between 300-350Mpa. Impact crusher is suitable for crushing medium hardness and less tough, brittle materials, such as limestone. If the material is hard, it will cause great damage to the wearing parts and shorten the service life.
2) Material Granularity
Jaw crusher is generally used to crush large pieces of material, allowing ore to enter below 1m (depending on the model and manufacturer), and there are many applications in mines and gravel fields. Impact crusher is used to process some small and medium-sized materials, and the feeding size range is not as good as Jaw Crusher.
2. Production Line Position
As common understanding, Jaw Crusher is a commonly used primary crushing device used for coarse crushing (fine crushing can be used for medium or fine crushing), and Impact Crusher is a commonly used secondary or tertiary crushing device for medium or fine crushing.
3. Production Capacity
Generally, the Jaw Crusher capacity is greater than the Impact Crusher. The hourly output can reach 600-800t (depending on the manufacturer and product model), and the Impact Crusher hourly output is around 260-450t.
4. Discharge Fineness
Jaw Crusher as a primary crushing, the fineness of the discharge is large, generally below 300-350mm (depending on the manufacturer and the product model). The Impact Crusher as secondary or tertiary crushing, the fineness of the discharge is of much smaller.
Here should be noted that due to different material properties, the fineness of the discharge of the equipment may also be inaccurate.
5. Discharge Shape
The shape of the material after Jaw Crusher squeezing and crushing is not good, the Impact Crusher is the product with good grain size and less angular shape in the crushing equipment, the discharge shape is even better than Cone Crusher.
First, the sales volume and transaction of many manufacturers are higher, the main reason is the price. Second, Jaw Crusher as the traditional crushing equipment, it can meet all customer’s requirements such as performance, quality and power consumption etc. So the cost-effective devices are more likely to attract users' attention.
All of the above are personal opinions and welcome to join the discussion.