Customize Jaw Crusher Parts

Jaw crushers are one of the most important pieces of equipment in the mining, construction and aggregate industries, with their rugged durability and ability to handle large amounts of material. However, like any heavy machinery, equipment wear is inevitable. To ensure continued efficiency and productivity, jaw crusher parts need to be replaced regularly.

The jaw crusher parts that are replaced regularly include jaw plates, tooth plates, liners, bearings of movable and static jaws, eccentric shafts, and seals of the lubrication system. Because these parts will experience greater wear and fatigue during long-term work, especially when processing materials with higher hardness, they are more prone to damage. Regular inspection and replacement of these key parts can effectively avoid equipment failures, reduce downtime, thereby improving production efficiency and extending the service life of equipment.

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Jaw Crusher Machine Structures

Jaw crusher is a kind of industrial crusher equipment used for coarse crushing of ore, rock and other materials. It has a compact structure design and high working efficiency. It is widely used in mining, metallurgy, construction and other industries. Its main components include frame, fixed jaw liner, suspension bearing, suspension shaft, movable jaw liner, eccentric shaft, eccentric bearing, connecting rod, flywheel, thrust plate support, front and rear thrust plates, top seat, pull rod, spring, pulley, pad, side wall liner, fixed steel plate, lifting lug (spring support plate), gasket and other parts.

Regular inspection and maintenance of these key components is the key to ensure long-term operation of equipment, improve production efficiency and reduce maintenance costs.

Jaw Crusher Structures — Jaw crusher parts diagram

Jaw Crusher Parts and Their Functions

Frame (Frame)
The frame is the main structural component of the jaw crusher and is made of steel or cast iron to withstand the high pressure and forces generated during the crushing process.

Fixed Jaw (Fixed Jaw)
The fixed jaw is a fixed component mounted on the frame. It forms half of the crushing chamber and connects with the moving jaw to crush the material. It is usually made of high manganese steel to resist wear caused by contact with the material being crushed.

Moving Jaw (Swinging Jaw)
The moving jaw is mounted on the moving jaw and is driven by the eccentric shaft. This component moves back and forth in the crushing chamber, pressing the material against the fixed jaw. Like the fixed jaw, it is made of durable, wear-resistant material, usually high manganese steel.

Eccentric Shaft
The eccentric shaft is the driving force for the jaw’s movement. It is located at the top of the jaw crusher and rotates to make the swinging jaw move in a circular motion.

Eccentric Shaft Bearing
The eccentric shaft bearing supports the eccentric shaft and allows it to rotate smoothly. It reduces friction and ensures that the shaft runs with minimal wear, thereby extending the life of the jaw crusher.

Toggle Plate
The toggle plate is a key component that connects the movable jaw to the eccentric shaft. It is a safety mechanism that absorbs shock loads and protects other components such as the drive and bearings from damage when overloaded.

Toggle Plate Seat
The toggle plate seat is where the toggle plate is placed. It is used to maintain the correct position and alignment of the toggle plate and movable jaw, ensuring smooth operation and efficient crushing.

Flywheel
The flywheel helps store energy during the crushing cycle and releases energy during the return stroke of the jaw plate. It ensures smooth operation of the jaw crusher by maintaining a constant speed. The flywheel also acts as a counterweight to reduce vibration during operation.

Jaw Crusher Pulley (V-Pulley)
The pulley, also known as the V-Pulley, is mounted on the flywheel and is responsible for transmitting power from the motor to the jaw crusher. It is connected to the motor through a V-belt, allowing the machine to operate efficiently.

Spring
The spring is used to absorb shocks and provide necessary tension to certain components such as the toggle plate. In some jaw crushers, the spring helps adjust the discharge opening and can be used to apply additional pressure to the material being crushed.

Discharge opening
The discharge opening is the gap between the fixed jaw and the moving jaw. The size of this gap determines the output size of the crushed material. It can be adjusted to accommodate different material sizes and achieve the desired output level.

Side guards (side liners)
The side guards or side liners are located on the sides of the jaw crusher to protect the frame from wear caused by the crushed material. They help extend the life of the machine by preventing direct contact between the frame and the material.

Bearings
The bearings in the jaw crusher are mainly used to support the movement of the eccentric shaft, flywheel and other rotating parts.

V-belts
V-belts are used to connect the motor to the jaw crusher, transmitting power and making the crusher operate.

Liners (side liners)
The liners are installed on the sides of the jaw crusher to protect the frame from wear. They are made of durable materials, such as high manganese steel, and help reduce the impact of the crushed material on the machine.

Customize Jaw Crusher Wear Parts: Applicable to multiple international brands

we produce jaw crusher spare parts that are compatible with many internationally renowned brands, including Metso, Sandvik, Terex, Nordberg, Trlo, Symons, Svedala, Pegson, Telsmith, Shanbao, Shibang, Gatory, etc., which can meet the needs of different equipment.

Available Models for Jaw Crusher Parts

Product Series	Models
PE & PEX Series	PE150250, PE200300,PE250400,PE400600,PE500750, PE600900, PE7501050, PE9001200, PE1001200, PE12001500, PE15001800, PEX250750, PE2501000, PE2501200, PE3001300, PE10″16″
CJ Series	CJ211, CJ409, CJ411, CJ412, CJ612, CJ613, CJ615, CJ8115
C Series	C80, C96, C106, C116, C120, C130, C150, C160, C200
CT & CTHT Series	CT1030, CT1040, CT1048, CT1252, CT2036, etc.

Customize Jaw Crusher Parts Advantages

Accurate dimensions to ensure complete consistency with original part numbers and design drawings.
Effectively reduce jaw crusher downtime and improve production efficiency.
With higher cost-effectiveness, helping you save 40-60% of costs.
Adopting advanced manufacturing technology, strictly following the requirements of original process and drawings.

Jaw Crusher Parts Supplier and Manufacturer

Sanyuantang is a leading manufacturer and supplier of crushing equipment, vibrating screens and conveying equipment in China, with advanced production equipment and technology, strict quality control system, and rich accessories supply. We are committed to providing high-quality cast liners and jaw crusher wear parts to meet your highest requirements for equipment performance and durability. If you need to customize or replace jaw crusher parts, please feel free to contact us.

The following is the processing flow of our factory：

1.Process design
2.Pattern Making
3.Modeling
4.Coating
5.Casting
6.Pouring
7.Clean
8.Heat Treatment
9.Grinding workshop
10.Machining
11.Inspection
12.Packing&Delivery

FAQS

Why do jaw crushers need to replace parts regularly?

The main reason for replacing parts of jaw crushers is that during long-term operation, the equipment will be subjected to high-intensity working pressure and friction, resulting in different degrees of wear of various parts such as wear-resistant parts and liners. Especially when processing materials with higher hardness such as ore, cement, stone, etc., the wear phenomenon is more obvious, affecting the crushing efficiency and the service life of the equipment.
Regular replacement of parts can not only ensure the stable operation of the equipment, but also effectively avoid shutdowns and production delays caused by equipment failure, thereby improving production efficiency and economic benefits.

How to disassemble a jaw crusher?

The most frequently replaced part of a jaw crusher is the thrust plate, i.e. the elbow plate. The thrust plate must be removed from the crusher with an integral connecting rod. First, unscrew the baffle bolts, cut off the dry oil lubricating oil pipe, and hang the thrust plate on the crane hook or other lifting equipment. Then, you can loosen the spring at one end of the horizontal pull rod, pull the movable jaw to the direction of the fixed jaw, and remove the thrust plate. If you want to remove the rear thrust plate, you should pull the connecting rod together with the front thrust plate and the movable jaw to remove the rear thrust plate.

After removing the thrust plate, cut off the thin oil lubrication pipe and the cooling water pipe, support them with a bracket under the connecting rod, and then remove the connecting rod cover before you can lift the connecting rod.

The main shaft of the crusher should be removed together with the pulley and flywheel, and the motor (with the belt) should be moved as close to the crusher as possible along the slide rail, and the V-belt should be removed. Then lift the shaft with a crane.

In order to disassemble the movable jaw, you must first cut off the dry oil lubrication oil pipe, disassemble the tie rod, remove the bearing cover, and then use a crane or other lifting equipment to pull out the movable jaw.

Precautions for replacing wear-resistant parts of jaw crusher

In jaw crusher, liner, thrust plate and eccentric shaft are the main wear-resistant parts. The service life of jaw crusher wear-resistant parts is shown in the figure below. The following are the precautions for replacing these wear-resistant parts.

Name of easily worn parts	Materials	General use period (months)	Minimum stock
Moving jaw lining	High manganese steel	4	2 sets
Fixed jaw lining	High manganese steel	4	2 sets
Toggle plate	Cast iron	2	2 sets
Main bearing lining	Cast babbitt alloy	24	1 set
Eccentric bearing lining	Cast babbitt alloy	36	1 set
Moving jaw spindle bearing lining	Bronze	12	1 set
Wall spring	Spring steel	6	2 pieces
Bearing	Bearing steel	6	2 pieces
Spring pull rod	Plain carbon steel	6	2 pieces
Gasket	Plain carbon steel	4

1. Replacement of liner

The fixed jaw liner (tooth plate), movable jaw liner (tooth plate) and two side liners (guard plates) of jaw crusher are most susceptible to wear. Severe wear will cause the product particle size to increase. When the liner is initially worn, the liner can be turned over or the upper and lower pieces can be turned over. The wear of the jaw plate is mostly concentrated in the middle and lower parts. When the tooth plate is worn off by 3/5, a new liner needs to be replaced. When the liners on both sides are worn off by 2/5, a new one is also needed.

2. Replacement of spindle, eccentric shaft and bearing

If the spindle is not worn much and you just want to repair the geometric shape, you can turn it on the lathe, but when the journal size is reduced by 5% after several turns, it is not allowed to turn again and should be replaced with a new one.

Since the jaw crusher works under impact load, the babbitt lining on the bearing needs to be recast every two years.

If the eccentric shaft and the bearing, the mandrel and the bearing are worn, and the gap is greater than 1.5 times the original assembly gap, it is necessary to add a pad to adjust or replace it;
If the oil groove is worn by 1.5 mm, the oil groove should be reopened and adjusted;
If the gap between the connecting rod head cover and the eccentric shaft is worn to more than 1.5 times the assembly gap, it is also necessary to add a pad to adjust or replace it with a new one.

3. Replacement of thrust plate

When the thrust plate is severely worn or the front thrust plate is broken, the ore in the crushing chamber must be removed first, the severely worn or broken thrust plate must be removed, and the toggle plate on the movable jaw and the connecting rod must be checked for damage. Then pull the movable jaw to the vicinity of the fixed jaw, lubricate the working surface of the toggle plate with dry oil, replace the new thrust plate, make it slowly contact with the working surface of the toggle plate, and tighten the horizontal pull rod so that the movable jaw clamps the thrust plate. Tighten the safety cover, connect the lubrication system, and adjust the discharge port size.