Special accessories for 250*1000 fine jaw crusher jaw block screws

The jaw crusher is a complex machine, and its functional components are all precision instruments. But how much do you really know about each component of the crusher? Now we will dismantle a complete crusher to explain the function of each component in detail, providing a basis for solving crusher faults, repairs and maintenance in the future.
The first is the jaw crusher frame. Generally, the frame is a rigid frame with upper and lower openings. It is used to support the eccentric shaft and bear the reaction force of the crushed materials. It must have sufficient strength and rigidity. It is generally made of cast steel. Overall casting, small machines can also use high-quality cast iron instead of cast steel. The frames of large equipment need to be cast in sections and then firmly connected with bolts. The complexity of the process is beyond the ability of ordinary small manufacturers to complete.
We all know that the jaw plate and side guard plate of the jaw crusher are composed of a fixed jaw and a movable jaw. The jaw plate is fixed on the jaw bed with bolts and wedge irons. . The jaw bed of the fixed jaw is the front wall of the frame, and the jaw bed of the movable jaw is hung on the periphery. It must have sufficient strength and rigidity to withstand the crushing reaction force, so it is mostly made of cast steel or iron.
During the use process, we must pay special attention to the lubrication process of the crusher, which is related to the lubrication device of the jaw crusher. Eccentric shaft bearings usually use centralized circulation lubrication. The supporting surfaces of the spindle and thrust plate are generally lubricated with grease through a manual oil gun. The swing angle of the movable jaw is very small, making it difficult to lubricate between the spindle and the bearing bush. A number of axial oil grooves are often opened at the bottom of the bearing bush, and a ring of oil grooves is opened in the middle to connect them, and then an oil pump is used to forcibly inject dry butter for lubrication.