Self lubricating bearing

The plastic layer on the surface of the self-lubricating bearing can be kept in a sufficient margin during processing, and the device can be processed by itself after being pressed into the seat hole to achieve a better installation size. What is the relationship between the use of self-lubricating bearings and the sliding bearing? When we choose self-lubricating bearings, we must first watch the three objectives of the joints. One, hardness and hardness are one of the key guidelines for the quality of the bearing. It has an indirect effect on the self-lubricating bearing for fatigue strength, wear resistance and elastic limit. The hardness of the self-lubricating bearing under the condition of use should reach HRC61-65 individually. The higher hardness can make the bearing achieve higher contact fatigue strength and wear resistance.

Solid inlaid self-lubricating bearing introduction:
Metal-based inlaid solid self-lubricating bearing (referred to as jdb) is a novel lubricated bearing that combines the characteristics of metal bearing and the characteristics of self-lubricating bearing. The metal matrix bears the load, and the specially formulated solid lubricating material acts as a lubrication.
It has the characteristics of high bearing capacity, impact resistance, high temperature resistance and strong self-lubricating ability. It is especially suitable for heavy load, low speed, reciprocating or swinging, etc., which is difficult to lubricate and form oil film. It is also not afraid of water and other acid etching. And scouring. The cleaning of the removed bearings is divided into coarse cleaning and fine cleaning. They are placed in the container respectively, and the metal mesh bottom is placed first so that the bearing does not directly contact the container. When rough cleaning, if the bearing is rotated with dirt, it will damage the rolling surface of the bearing and should be noted. In the rough cleaning oil, use a brush to remove the grease and the adhesive. After it is almost clean, it is transferred to the fine wash. Fine washing is to carefully clean the bearing while rotating it in the cleaning oil. In addition, the cleaning oil should always be kept clean. The majority of users generally reflect that the inlaid bearing is not only fuel-efficient, energy-saving, but also has a longer working life than ordinary sliding bearings. The use of self-lubricating bearings has been widely used in metallurgical continuous casting machines, rolling equipment, mining machinery, ships, steam turbines, hydraulic turbines, injection molding machines and equipment production lines.


Most of the bearings use SUJ2 in JIS steel. Large bearings use SUJ3. The chemical composition of SUJ2 has been standardized as a material for sliding bearings in various countries around the world. For example, it is the same kind of steel as AISL52100 (USA), DIN100Cr6 (West Germany), BS535A99 (UK). When the sliding bearing equipment starts, the friction coefficient is very large. After the operation, the friction coefficient is reduced, but the change is relatively small within a certain interval, and the magnitude of the change has a great influence on the friction coefficient with respect to the pressure, so the cement is in the kiln. When using fever, the method of lowering the speed of the kiln is often used. Although it has an effect, most of them cannot change the fate of fever. This is the reason. Further, in the case of impact resistance, chrome steel, chrome molybdenum steel, nickel chrome molybdenum steel, and carburizing quenching are used as bearing materials, so that the steel has a softening layer from the surface to an appropriate depth. This is a problem. In fact, the friction coefficient increases as the pressure per unit area increases. Once the friction coefficient increases, the friction heat increases. Once the heat is generated, the frictional heat is greater than the amount of heat that can be dissipated. When broken, the bearing will heat up. The carburized bearing with appropriate softening depth, fine structure, hardness-compliant surface and core hardness has excellent impact resistance compared to bearings bearing steel, and the chemical composition of individual carburized bearing steel.
The principle of self-lubricating bearings in applications
1. No oil lubrication or less oil lubrication. It is suitable for places that cannot be refueled or difficult to refuel. It can be used without maintenance or less maintenance.
2. Good wear resistance, small friction coefficient and long service life.
3. There is an appropriate amount of elastoplasticity, which can distribute the stress on the wider contact surface and improve the bearing capacity of the bearing.
4. The static friction coefficient is similar, which can eliminate the creep at low speed, thus ensuring the working precision of the machine.
Opening the package too early before use will cause internal pollution. At the same time, the dirty working environment during the installation process will cause pollution of oil-free bearings. The oil-free bearing is a novel lubricated bearing that combines the characteristics of a metal bearing with the characteristics of a non-oil-lubricated bearing. The metal matrix is subjected to a load, and the specially formulated solid lubricating material acts as a lubrication. Widely used in metallurgical continuous casting machines, rolling equipment, mining machinery, ships, steam turbines, hydraulic turbines, injection molding machines and equipment production lines. So, why are oil-free bearings widely used? Let's take a look at the following! The advantages of oil-free bearings are well known. All kinds of mechanical smooth running must use some kind of bearing.
5. It can reduce vibration, reduce noise, prevent pollution and improve working conditions.
6. The transfer film can be formed during the operation to protect the grinding shaft without biting.

7. The hardness requirement of the grinding shaft is low, and the shaft without the quenching and tempering can be used, thereby reducing the processing difficulty of the related parts.
8, thin wall structure, light weight, can reduce the mechanical volume.
9, the back of the steel can be plated with a variety of metals, can be used in corrosive media; has been widely used in various mechanical sliding parts, and some in order to improve the flexibility of the sliding bearing spherical tile, the contact between the spherical tile and the tile seat The area shrinks very small, especially the grooved spherical tile in the middle, only a small part of the groove is in contact with each other, and the friction force will increase greatly, which is not conducive to the movement of the spherical tile. For example: printing presses, textile machines, tobacco machinery, micro-motors, automobiles, motorcycles, and agricultural and forestry machinery.