The joint bearing is a spherical plain bearing, which is mainly composed of an inner ring having an outer spherical surface and an outer ring having an inner spherical surface, and can withstand a large load. Since the outer surface of the inner ring is provided with a composite material, the bearing can be self-lubricated during operation. Generally used for low-speed oscillating motion, and low-speed rotation, it can also be tilted within a certain angle range. When the support shaft and the shaft housing hole are different, the normal operation can still be performed. Depending on their type and construction, it is possible to withstand radial loads, axial loads or combined loads of radial and axial forces. It can be rotated at any angle during movement. It is made by various special processing methods such as surface phosphating, blasting, inserting and spraying. The joint bearing has the characteristics of large load capacity, impact resistance, corrosion resistance, wear resistance, self-aligning, and good lubrication.

The rod end joint bearing is a joint bearing with a rod end or attached to the rod end, which belongs to a class in the joint bearing

application

Joint bearings are widely used in engineering hydraulic cylinders, forging machine tools, engineering machinery, automation equipment, automotive shock absorbers, water conservancy machinery and other industries. The joint bearing is a spherical plain bearing, and the basic type is composed of inner and outer rings having a spherical sliding spherical contact surface. Depending on its structure and type, it can withstand radial loads, axial loads, or combined loads acting in both radial and axial directions.

Because the spherical sliding contact area of the joint bearing is large, the inclination angle is large, and also because most joint bearings adopt special processing methods, such as surface phosphating, galvanizing, chrome plating or outer sliding surface lining, inserting, spraying, etc. Therefore, it has large load capacity and impact resistance, and has the characteristics of corrosion resistance, wear resistance, self-aligning, good lubrication or self-lubricating and non-lubricating dirt pollution, even if the installation is misplaced, it can work normally. Therefore, joint bearings are widely used for low-speed oscillating motions, tilting motions, and rotational motions.

Types of

Spherical plain bearings and rod end joint bearings are available in a variety of designs and have different combinations of sliding contact surfaces. Each design and combination has unique properties that make it ideal for certain applications.

Radial spherical plain bearing to be maintained

Maintenance-free spherical plain bearing

Angular contact spherical plain bearing

Spherical sliding thrust bearing

Rod end joint bearing

To select a certain bearing type, the main factors that must be considered in determining the required bearing size are the load, the bearing capacity of the bearing, and the expected service life. The same is true when selecting rod end joint bearings.

Classification characteristics

(1) GE...E type: single outer ring, no lubricating oil groove. Can withstand radial loads and small axial loads in either direction.

(2) GE...ES type: single-slit outer ring with lubricating oil groove. Can withstand radial loads and small axial loads in either direction.

(3) GE...ES-2RS type, GEEW...ES-2RS type: single-slit outer ring with lubricating oil groove and sealing ring on both sides. Can withstand radial loads and small axial loads in either direction.

(4) GE...ESN type: single-slit outer ring, GE...XSN type: double-slit outer ring (split outer ring), with oil groove, and outer ring with stop groove. Can withstand radial loads and small axial loads in either direction. However, when the axial load is received by the retaining ring, its ability to withstand axial loads is reduced.

(5) GE...HS type: There are lubricating oil grooves in the inner ring and double outer rings. The clearance can be adjusted after wear. Can withstand radial loads and small axial loads in either direction.

(6) GE...DE1 type: the inner ring is hardened bearing steel and the outer ring is bearing steel. Extrusion during assembly of the inner ring, with lubrication grooves and oil holes. Bearings with an inner diameter of less than 15 mm, no lubrication grooves and oil holes. Can withstand radial loads and small axial loads in either direction.

(7) GE...DEM1 type: the inner ring is hardened bearing steel and the outer ring is bearing steel. When the inner ring is assembled, it is extruded. After the bearing is installed in the bearing housing, the end groove is pressed out on the outer ring to fix the bearing axially. Can withstand radial loads and small axial loads in either direction.

(8) GE...DS type: The outer ring has a mounting groove and a lubrication groove. Limited to large size bearings. Can withstand radial loads and small axial loads in either direction (the side of the mounting groove cannot withstand axial loads).

Angular contact spherical plain bearings

The GAC...S type inner and outer rings are hardened bearing steel with oil grooves and oil holes in the outer ring. Can withstand radial loads and axial directional (combined) loads.

Thrust joint bearing

GX...S type The shaft ring and the seat ring are hardened bearing steel; the seat has oil grooves and oil holes. It can withstand axial loads or combined loads in one direction (in this case, the radial load value must not be greater than 0.5 times the axial load value).

(1) SI...E type is an assembly of GE...E type bearings and rod ends. The rod ends are internally threaded and the material is carbon structural steel with no lubrication grooves. Can withstand radial loads and axial loads in either direction less than or equal to 0.2 times the radial load.

(2) SA...E type is an assembly of GE...E type bearings and rod ends. The rod end is externally threaded and made of carbon structural steel; the oil-free groove is capable of withstanding radial loads and axial loads less than or equal to 0.2 times the radial load in either direction.

(3) SI...ES type is an assembly of GE...ES type bearings and rod ends. The rod end is internally threaded and the material is carbon structural steel; there is a lubricating oil groove. Can withstand radial loads and axial loads in either direction less than or equal to 0.2 times the radial load.

(4) SA...ES type is an assembly of GE...ES type bearings and rod ends. The rod end is externally threaded and the material is carbon structural steel; there is a lubricating oil groove. Can withstand radial loads and axial loads in either direction less than or equal to 0.2 times the radial load.

(5) SIB...S type Rod end with internal thread, the material is carbon structural steel; the inner ring is hardened bearing steel; there is lubricating oil groove. Can withstand radial loads and axial loads in either direction less than or equal to 0.2 times the radial load.

(6) SAB...S type The rod end is externally threaded and the material is carbon structural steel; the inner ring is hardened bearing steel; there is a lubricating oil groove. Can withstand radial loads and axial loads in either direction less than or equal to 0.2 times the radial load.

(7) SQ... is a ball end rod end joint bearing, the rod end is carbon structural steel; the ball head is carburized steel. Can withstand radial loads and small axial loads in either direction.

Self-lubricating radial joint bearing

(1) GE...C type and GE...T type: extruded outer ring, the sliding surface of the outer ring is sintered bronze composite material; the inner ring is hardened bearing steel, and the sliding surface is plated with hard chrome. Limited to small size bearings. The outer ring is bearing steel and the sliding surface is a layer of PTFE fabric. The inner ring is hardened bearing steel and the sliding surface is hard chrome plated. A load that can withstand constant direction can withstand radial loads in one direction while being able to withstand axial loads in either direction.

(2) GE...CS-2Z type: the outer ring is bearing steel, the sliding surface is sintered bronze composite material; the inner ring is hardened bearing steel, the sliding surface is hard chrome plated; the two sides are provided with dustproof cover. A load that can withstand the same direction, can withstand radial loads and can withstand small axial loads in either direction.

(3) GEEW...T type: the outer ring is bearing steel, the sliding surface is a layer of PTFE fabric; the inner ring is hardened bearing steel, and the sliding surface is plated with hard chrome. A load that can withstand the same direction, can withstand radial loads, and can withstand small axial loads in either direction.

(4) GE...F type: the outer ring is hardened bearing steel, the sliding surface is glass fiber reinforced plastic with PTFE as additive, the inner ring is hardened bearing steel, and the sliding surface is plated with hard chrome. A medium radial load that can withstand the same direction.

(5) GE...F2 type: the outer ring is glass fiber reinforced plastic, the sliding surface is glass fiber reinforced plastic with PTFE as additive; the inner ring is hardened bearing steel, and the sliding surface is plated with hard chrome. A medium radial load that can withstand the same direction.

(6) GE...FSA type The outer ring is medium carbon steel, the sliding surface is composed of glass fiber reinforced plastic disc with PTFE as additive, and fixed on the outer ring with a fixture; the inner ring is hardened bearing steel. For large and extra large bearings. Can withstand large radial loads.

(7) GE...FIH type outer ring is hardened bearing steel; inner ring is medium carbon steel, sliding surface is composed of glass fiber reinforced plastic disc with polytetrafluoroethylene as additive, and fixed on inner ring with fixing device; Double half outer ring. For large and extra large bearings. Can withstand large radial loads.

Self-lubricating angular contact spherical plain bearings

The outer ring of GAC...F is hardened bearing steel; the sliding surface is glass fiber reinforced plastic with PTFE as additive; the inner ring is hardened bearing steel, and the sliding surface is plated with hard chrome. Can withstand radial loads and axial (combined) loads in one direction.

Self-lubricating thrust joint bearing

GX...F type The seat ring is hardened bearing steel, the sliding surface is glass fiber reinforced plastic with PTFE as additive, the shaft ring is hardened bearing steel, and the sliding surface is hard chrome plated. Can withstand axial load or combined load in one direction (the radial load value should not be greater than 0.5 times the axial load value).

Self-lubricating rod end joint bearing

(1) SI...C type is an assembly of CE...C type bearings and rod ends. The rod ends are internally threaded and the material is carbon structural steel. Can withstand loads of constant direction. It can withstand radial loads and can withstand axial loads less than or equal to 0.2 times the radial load in either direction.

(2) SA...C type is the assembly of the CE...C type bearing and the rod end. The rod ends are externally threaded and the material is carbon structural steel. Can withstand loads of constant direction. It can withstand radial loads and can withstand axial loads less than or equal to 0.2 times the radial load in either direction.

(3) SI...CS-2Z type is an assembly of GE...CS-2Z type bearings and rod ends. The rod ends are internally threaded and the material is carbon structural steel. It can withstand radial loads and can withstand axial loads less than or equal to 0.2 times the radial load in either direction.

(4) SA...CS-2Z type is an assembly of GE...CS-2Z type bearing and rod end. The rod ends are externally threaded and the material is carbon structural steel. Can withstand loads of constant direction. It can withstand radial loads and can withstand axial loads less than or equal to 0.2 times the radial load in either direction.

(5) SIB...C type The rod end has internal thread, the material is carbon structural steel, the sliding surface is sintered bronze composite material; the inner ring is hardened bearing steel, and the sliding surface is plated with hard chrome. Can withstand radial loads in the same direction.

(6) SAB...C type The rod end is externally threaded, the material is carbon structural steel, the sliding surface is sintered bronze composite material; the inner ring is hardened bearing steel, and the sliding surface is plated with hard chrome. Can withstand radial loads in the same direction.

(7) SIB...F rod end with internal thread, carbon structural steel, sliding surface is made of glass fiber reinforced plastic with PTFE as additive; inner ring is hardened bearing steel, sliding surface is hard chrome plated . Can withstand radial loads in the same direction.

(8) SAB...F type The rod end is externally threaded, the material is carbon structural steel, the sliding surface is made of glass fiber reinforced plastic with Teflon as additive; the inner ring is hardened bearing steel with sliding surface. Can withstand radial loads in the same direction.

(9) SQ...L type Made of special self-lubricating alloy material, it can withstand radial load and small axial load in either direction.