Jaw Crusher is widely used in mining industry for its superior features, such as the large crushing ratio, even discharged materials, low noise and little dust pollution in construction waste management. The large and reliable adjusting range of discharged outlet can meet various requirements. To have a good knowledge of jaw crusher’s frame structure can help us better operate it and improve its working efficiency.

Crusher frame is the installation of the crusher spare parts. Its biggest impact loads in the work, its quality of the whole machine large proportion (about casting frame about 50%, of the welding frame around 30%), and processed the workload is very big also. Frame strength and stiffness of the main parts of the machine performance and service life have very big effect. Therefore, frame structure design is very important, jaw crusher frame according to the structure, the machine frame and frame.

The machine frame due to manufacture, installation and transportation difficulties, so it should not be used in large jaw crusher, and more for use by small and medium sized jaw crusher of stone crushing plant configuration. It is better than composite frame rigidity, but manufacturing is relatively complex.

Combined rack is suitable for large jaw crusher, it has two forms: one is through setting a pin and frame wall between the bolt combination, such as 1200 X 1500 jaw crusher frame consists of two parts, the frame and lower frame with bolt connection, combination between keys, pins under powerful shear force. The key and assembling positioning pin also.

Another kind is to use combination of welding, such as jaw crusher frame of 900 X 1200. It's better than inlaid pin link combination frame rigidity, fabrication, assembly and dismantling is convenient, 1500 X 2100 crusher adopts welding composite frame.

From the point of manufacturing process, overall frame integral casting frame and the frame is entirely welded. The former manufacturing more difficult, especially sheet small batch production, which is convenient for processing and manufacturing, machine weight is lighter, but it requires the welding process, welding quality is high, and the removal of internal stress after welding requirements in mining processing plant.

Jaw crusher is widely used abroad welded frame, not only use small crusher, large crusher is also welded frame.