JAW CRUSHER SPARE PARTS


1. Fixed jaw plate 2. Side plate（Up）3.Movable jaw plate4. Jaw 5.Toggle Plate 6.Tension device（spring and tension rod） 7. Side plate（lower） 8. Pulley 9.Bearing 10.Bearing 11.Eccentric Shaft 12. Fly wheel
Jaw Crusher uses motor as its power. Through the motor’s wheels, the eccentric shaft is driven by V-belt and groove wheel to make the movable jaw move by a regulated track. Therefore, the materials in the chamber that consists of fixed jaw, movable jaw and side- plate can be crushed and discharged through the discharge opening.
 1. The frame
The frame of jaw crusher has heavily impulsive load during work. So it must be of high intensity and rigidity. The frame is welded (the small jaw crusher is cast -steel). The fixed jaw fastening by high-strength bolt is installed at the front frame. The up and lower side-plate is installed at the left and right side of the frame.
 2. The movable jaw
 Structure characteristic
Movable jaw is made of high-quality casting steel. Its holes and troughs are made through precision machining and tested strictly, which can make sure that they can work safe and credible.
The eccentric shaft is made of the excellent forging steel. Its precision machining, heat treatment and inspection make it be of high intensity and rigidity.
Bearing adopts four sets self-aligning roller bearing and it has excellent loading capacity and auto self-aligning performance.
Both the fixed and movable jaw is made of high-quality manganese-steel. In order to extend its working time, it is designed symmetrically. So if one end is frayed, another end also can be used. Flywheel and groove wheel are made of good casting iron. Their weight and structure can ensure the crusher work balanceable. The flywheel on the eccentric shaft can be exchanged and connected by the power lock.
3. The toggle plate and adjustment parts
(1) The toggle plate is made of accurate casting iron. It is not only the component that spreads the strength, but also the insurance part of crusher, the toggle will break up immediately and the crusher will stop working when some unbreakable materials go into the crusher. Toggle and toggle mat adopt rolling contact way, which can reduce attrition during the normal operation, so the user only needs to put some lubrication grease on the contact surface. Change the toggle plate as soon as it’s broken, and the change method please see diagram 6
 (2) Adjusting parts are used for adjusting the discharge size and reducing the attrition among jaw plate, toggle plate and shim.
4. The tension part
It is used for guaranteeing the combination of whole configuration closely and balancing the mass force in working time.
The assembling process:
The end of tension rod connects to the earring on the low part of movable jaw plate, another end is on the low part of rear frame through washers. The spring is clamped by the washers and nuts of two sides. It needs some pretightening force when crusher works to avoid the draw down. But the force can’t be so big that the spring fracture.
 5. The rail
The rail is fastened on the basis of reinforced concrete through the foundation bolts.
Motor is installed on the rail, the motor base imbeds in the rail, adjust the distance from crusher according to the length of V belt. When the distance is confirmed, use the adjusting rod to fasten the motor base.
6. Safety device.
Safety devices are made and installed on working site with relative mark.