What does BENOY tell you about self-lubricating bearings?

Self-lubricating bearings are divided into composite self-lubricating bearings, solid inlaid self-lubricating bearings, bimetallic self-lubricating bearings, and special material self-lubricating bearings. Different self-lubricating bearings are selected according to different uses and working conditions.

One of the large categories of solid inlaid self-lubricating bearings (referred to as JDB for short) is a new type of lubricating bearing that combines the characteristics of metal bearings and oil-free lubrication bearings. The metal base bears the load, and the specially formulated solid lubricating material plays a lubricating role.

It has the characteristics of high load bearing capacity, impact resistance, high temperature resistance, and strong self-lubricating ability. It is especially suitable for occasions where it is difficult to lubricate and form an oil film such as heavy load, low speed, reciprocation or swing, and it is not afraid of water erosion and other acid solutions. And scour. Products have been widely used in metallurgical continuous casting machines, rolling equipment, mining machinery, molds, lifting machinery, textile machinery, wind power generation, ships, steam turbines, turbines, injection molding machines and equipment production lines. Abrasion resistance is twice that of ordinary bushings.

Difference between oil bearing and self-lubricating bearing

1. Oil-bearing bearings are made of metal powder with a structural gap of 10-40%; the inlaid self-lubricating bearing base is made by centrifugal casting; the base density is relatively high, the bonding strength is higher than that of oil-bearing bearings, and the service life is longer than oil-bearing bearings. Be long

2. The lubricating material of oil-containing bearings is lubricating oil, and the oil film has sufficient thickness to eliminate direct contact between the two friction surfaces. At this time, there is only friction between liquid molecules, so the friction coefficient is very small (f = 0.001 to 0.008), which significantly reduces friction and wear; while the lubricating material of the inlaid self-lubricating bearing is a solid lubricating material, even in the absence of oil Under the working conditions, the good lubricating effect can still be ensured, which can ensure the uninterrupted and sustainable lubrication, and its effective lubrication life is consistent with the life of the substrate;

3. The lubricating oil in oil-bearing bearings is volatile and easy to lose. The lubricating oil film dissipates faster under high temperature and pressure, and cannot obtain the proper lubricating effect. In the graphite copper sleeve, the solid lubricant is rubbed and the solid in the hole or groove The lubricant is transferred or reversed to the friction surface, and a solid transfer film with good lubrication, firm adhesion and uniform coverage is formed on the friction surface, which greatly reduces friction and wear. With the progress of friction, the embedded solid lubricant is continuously provided on the friction surface, which guarantees good lubrication of the friction pair during long-term operation.