JQB， JDB-QJ， JQB SPHERICAL BUSHING self-lubricating spherical plain bearings are high-performance bearing products designed to meet the needs of specific industrial applications, particularly in environments where conventional lubrication is not possible. These bearings function as self-lubricating by embedding graphite or other solid lubricants in their construction, thereby reducing maintenance requirements and improving performance.

Oil Less Bearings, also known as self-lubricating spherical bearings, consist of the following main components:

Inner ring: This can be made from copper alloy, bronze, or cast iron, with the material chosen based on the application requirements.

Outer ring: Made from bearing carbon steel, the surface is electroplated to resist corrosion. In special cases, the inner edge of the outer ring may be coated with molybdenum disulfide (MoS2) to extend its lifespan.

Curved surface: There is a curved surface between the inner and outer rings, where one or both sides can use dry lubrication to enhance self-lubricating performance.

In summary, the self-lubricating spherical bearings achieve their self-lubricating function through the choice of materials for the inner and outer rings, as well as the design of the curved surface, making them suitable for various working environments.

Spherical plain bearings the set outer ring +internal

The JDBQJ spherical bearing appears to be a type of spherical bearing, which is a rolling-element bearing that permits rotation with low friction and permits angular misalignment. spherical bearings
Spherical bearings, in general, are designed to manage high radial loads and provide self-aligning capabilities to accommodate misalignments between the shaft and the housing. They can be found in a wide range of applications

SPHERICAL BUSHING JQB self-lubricating spherical bushing JDB-QJ Spherical bushing JQB self-lubricating spherical knuckle bearing Graphite cuzn25a16fe3mn3 copper sleeve ball bearing JDB-QJ Oil-free spherical spherical spherical knuckle bearing
Features of JQB self-lubricating spherical plain bearings
Material and structure: JQB joint bearings consist of a JDB-1 spherical bearing and an outer ring, which is usually divided into two halves and can be axially or radially opposed. The material of outer ring is 45# steel, after quenching treatment, the hardness reaches HRC45~50.
Matching dimensions: the outer ring matches with the seat hole as H8/p6, while the spherical bearing matches with the shaft as H7/p7, which ensures good mounting accuracy and running performance.
Self-lubricating characteristics: due to the inner ring of the outer spherical surface embedded with composite materials, these bearings can produce self-lubricating effect in the work, suitable for the environment that can not be conventional lubrication.
Common Models
Common Models
The JQB series includes a variety of models to meet different size and load requirements, including but not limited to JQB-015, JQB-020, JQB-025, JQB-030, JQB-035, JQB-040, JQB-045, JQB-050, JQB-060, JQB-070, JQB-080, JQB-090, JQB JQB-100, JQB-110, JQB-120, JQB-130, JQB-140, JQB-150, JQB-160, JQB-180, JQB-200, JQB-220, JQB-240, JQB-260, JQB-280, JQB-300.
Applications
JQB self-lubricating spherical plain bearings are widely used in a variety of machinery and equipment, especially in applications with special conditions such as high temperature, high load, corrosion resistance or inability to refuel. These bearings are designed to provide high load carrying capacity and excellent self-lubricating performance, making them ideal for metallurgy, mining machinery, ships, steam turbines, injection molding machines and other industries..
Precautions
There are several points to note when using JQB self-lubricating spherical plain bearings:
Before assembling, the lubricant application can shorten the walking-in period, which is good for mechanical operation and running.
When assembling, make sure the surface is clean, avoid the entry of foreign matter, recommend the use of frozen assembly method, and strictly prohibit knocking, so as not to damage the bearings or cause deformation.
After use, the working surface may appear black or gray-black phenomenon due to the oil film formed by the solid lubricant, which is normal and should not be scrubbed and can be used as usual.
JQB self-lubricating spherical plain bearings provide an efficient and reliable solution to meet the bearing needs in special industrial applications through their unique design and material selection.

Self-lubricating bearings, like the JDBQJ, do not require the application of grease or oil lubricants during operation. They are also known as maintenance-free or greaseless bearings. These bearings have lubricant impregnated within the sliding layer, which can be liquid (oil) or solid (graphite cuzn25a16fe3mn3, MoS2, lead), and is released through pores in the sliding layer during operation to lubricate the bearing surface. The lubricant is uniformly dispersed, ensuring consistent low friction performance even as the sliding layer wears down.

Spherical bushings are self-aligning spherical plain bushings that can handle both radial and axial loads simultaneously. They come in two main types: Steel-on-Steel and maintenance-free types. Maintenance-free spherical bushings typically have an outer ring with a PTFE liner and a spherical inner ring with hard chromium plating, providing excellent wear resistance without re-lubrication.

Self-lubricating bearings are suitable for various industries, including marine, automotive, construction, energy, and agriculture. They offer low friction, corrosion resistance, and can operate without additional lubrication, which is particularly beneficial in applications where lubrication is difficult or undesirable.

In summary, the JQB Spherical Bushing and JDBQJ Self-lubricating Bearing are designed for applications that require durable, high-performance bearings capable of operating without regular maintenance. They are used in a wide range of industries due to their robustness and self-lubricating properties