Selecting the eccentric bronze bushing suitable for the crusher requires a combination of various factors to consider, the following are some specific selection points:

Select according to the type of crusher:

Jaw crusher: the eccentric bronze bushing of the jaw crusher needs to withstand a large impact load, so it should be made of high hardness and good wear resistance, such as high-lead bronze, etc. The eccentric bronze bushing of the jaw crusher should be made of high hardness and good wear resistance. The shape is usually simple, and the size should match the specific model and structure of the jaw crusher to ensure stable operation after installation.

Cone crusher: For cone crusher, the precision of eccentric bronze bushing is required to be higher, because it directly affects the crushing effect and operation stability of the crusher. Generally speaking, the material of the eccentric bronze bushing of the cone crusher can be chosen such as tin bronze, which has better wear resistance and fatigue resistance, and can be adapted to the working characteristics of the cone crusher.

Gyratory crusher: The working load of gyratory crusher is large, and the eccentric bronze bushing needs to have good bearing capacity and wear resistance. When selecting, pay attention to the dimensional accuracy and fit precision of the eccentric bronze bushing to ensure a close fit with other parts of the crusher and reduce vibration and wear when the equipment is in operation.

Consider the material properties:

Wear resistance: During the working process of the crusher, the eccentric bronze bushing will be subjected to constant friction and abrasion, so wear resistance is an important indicator for selecting the material of the eccentric bronze bushing. Common wear-resistant materials include lead bronze, tin bronze and so on. Lead bronze contains a moderate amount of lead elements, which can form a lubricating film on the friction surface, reduce the coefficient of friction, and improve wear resistance; tin bronze has high hardness and strength, and is able to withstand greater pressure and wear.

Strength and toughness: Eccentric copper bushings need to have sufficient strength and toughness to withstand the shock loads and vibrations generated when the crusher is working. For example, some high-strength copper alloy materials, while ensuring wear resistance, also have good strength and toughness, and can adapt to the complex working environment.

Corrosion resistance: If the crusher works in a humid and corrosive environment, the eccentric bronze bushing needs to have good corrosion resistance. For example, you can choose to add a special alloy elements of copper alloy materials, such as aluminum bronze, etc., can effectively resist the erosion of corrosive media.

Focus on dimensional accuracy:

ID and OD dimensions: the ID and OD dimensions of the eccentric bronze bushing must match the dimensions of the crusher’s main shaft and frame and other components to ensure that the gap is appropriate after installation. If the clearance is too large, it will cause the eccentric bronze bushing to shake during operation, which will affect the stability of the crusher; if the clearance is too small, it will increase the difficulty of installation, and may even lead to the inability of the eccentric bushing to be installed or be damaged during installation.

Cylindricity and roundness: Cylindricity and roundness are important indexes to measure the shape accuracy of eccentric bronze bushing. Good cylindricity and roundness can ensure the matching accuracy between the eccentric bushing and other parts, reduce friction and wear, and improve the operation efficiency and service life of the equipment.

Eccentricity: The eccentricity of the eccentric bronze bushing is one of the key parameters, and a suitable eccentricity should be selected according to the design requirements and working principle of the crusher. If the eccentric distance is too big or too small, it will affect the crushing effect and performance of the crusher.