Professional custom production of self-lubricating bearings-Mingxu Machinery

Zhejiang Mingxu Machinery Manufacturing Co., Ltd. is a manufacturer specializing in the production and sales of self-lubricating bearings. The company adopts advanced production technology and specializes in the production of various types of mechanical accessories copper sleeves, self-lubricating bearings, etc.
Self-lubricating bearings are widely used in various components such as chassis walking mechanisms, body parts, hydraulic components, etc. Self-lubricating bearings have excellent wear resistance and dust resistance under high load conditions. At the same time, self-lubricating technology greatly extends the maintenance cycle of bearings, improves the utilization rate of equipment, and reduces maintenance costs.
Self-lubricating bearings (also called oil-free lubricating bearings) replace needle bearings and can effectively solve the problem of high failure rate, greatly improve the handling stability and component reliability, and solve this stubborn problem that has long plagued the mechanical control system.
The crawler walking mechanism of the machine consists of a driving wheel, a guide wheel and a supporting wheel. Their shafts are connected to the frame through sliding bearings to form an effective mechanical mechanism. Each sliding bearing uses dual-pipeline forced automatic centralized lubrication, but self-lubricating bearings are generally used.

Why use self-lubricating bearings?
The working environment of machinery is generally harsh. In actual work, there are many factors that cause the failure of sliding bearings. The following are the reasons for the failure of sliding bearings:
(1) Harsh working environment of equipment: When the machinery is working, most of the equipment is in a dusty site, and when the shaft and the shaft hole are not completely sealed, dust particles will fly into the fitting gap, especially when they are worn. These dust particles destroy the lubricating effect of the lubricating oil film and act as abrasive particles in the fitting of the shaft and the hole, causing abnormal wear of the shaft hole.
(2) Large impact load. Most machinery works under heavy load and low speed, and the structure of the machinery itself is huge. The impact force generated by this vibration can easily exceed the pressure limit of the lubricating oil film, resulting in loss of lubrication function. The use of solid embedded self-lubricating bearings will not cause such problems.
(3) Uneven working surface of the mining site. The ground in the working environment of the machinery is generally uneven. When working or walking, strong vibration will be generated, causing impact load, which will have a serious adverse effect on lubrication and cause bearing failure.
(4) Insufficient lubricating oil injected. The shaft and shaft hole of the mechanical running mechanism are not completely sealed. For this reason, the lubricating oil will gradually be squeezed out of the matching space during operation. At this time, if the lubricating oil is not replenished in time, the shaft hole will be in direct contact, resulting in abnormal wear.

Advantages of solid inlaid self-lubricating bearings
Solid inlaid self-lubricating bearings are self-lubricating bearings made by opening holes of appropriate size and orderly arrangement on the metal friction surface of the bearing matrix, and then embedding molded solid lubricants with unique lubrication properties in the holes (the area of ​​the solid lubricant is generally 25%-35% of the friction area).
This bearing combines the respective advantages of the metal matrix and the specially formulated lubricating material, breaking through the limitation of general bearings relying on oil film lubrication. RCB solid inlaid self-lubricating bearings are particularly suitable for use under special working conditions such as oil-free, high temperature, high load, low speed, anti-fouling, anti-corrosion, anti-radiation, and infiltration in water or vacuum solution where lubricating oil film cannot be added at all.
The matrix of the graphite copper sleeve should be determined according to the working conditions of the bearing itself. The more commonly used materials are high-strength brass, tin bronze, castings, etc. According to the working conditions of the bearing itself, through the combination of different metal matrices and embedded solid lubricants, it can ensure that the product can meet the special needs of various working conditions such as temperature, load, movement and medium, while ensuring stable and reliable operation.

Professional production, scientific testing
The company is equipped with advanced machining equipment, including CY series, CK series, HK series CNC lathes (nearly 20 units), CK511, CK5123 CNC vertical lathes (more than 10 units), VMC, G20L machining centers (more than 20 units) and other large equipment including various milling machines, planers, CNC sawing machines, radial drilling machines, gear hobbing machines, presses, CNC wire cutting machines and other machining equipment, providing professional metal processing technology.
The company is also equipped with professional testing equipment, including Hexagon fully automatic three-dimensional measuring instruments, contour and roughness measuring instruments, fully automatic two-dimensional imaging instruments and other large-scale automated testing equipment, digital measuring tools, high-precision measuring instruments, etc., with strong quality assurance capabilities and comprehensive capabilities to produce various high-quality standard parts and non-standard products.

Self-lubricating bearing product display