Self aligning bearing

Aligning ball bearing，also called self aligning bearing，Spherical plain bearing.Joint bearing is a kind of spherical plain bearing, whose sliding contact surface is an inner sphere and an outer sphere, which can rotate and swing at any Angle when moving. It is made of surface phosphating, blasting, inserts, spraying and other special processing methods. Joint bearing has the characteristics of large load capacity, impact resistance, corrosion resistance, wear resistance, self-aligning, good lubrication and so on.

The structure of the joint bearing is simpler than that of the rolling bearing, which is mainly composed of an inner ring with an outer sphere and an outer ring with an inner sphere. Joint bearings are generally used for swing movement (i.e. angular movement) with low speed. Because the sliding surface is spherical, it can also make inclined movement (i.e. aligning movement) within a certain Angle range. When the concentricity between the supporting shaft and the shaft shell hole is large, it can still work normally.

Joint bearings can bear large loads. According to its different types and structures, it can bear radial load, axial load or radial and axial load simultaneously. Because the outer sphere of the inner ring is inlaid with composite material, the bearing can be self-lubricating in operation. Generally used for low speed swing movement, and low speed rotation, can also be in a certain range of Angle tilt movement, when the bearing shaft and shaft shell hole concentricity is large, it can still work normally. Self-lubricating joint bearings are used in water conservancy, professional machinery and other industries.

Joint bearings are widely used in engineering hydraulic cylinders, forging machine tools, construction machinery, automation equipment, automotive shock absorbers, hydraulic machinery and other industries. A joint bearing is a spherical plain bearing. The basic type is composed of an inner and outer ring with a spherical sliding spherical contact surface. Depending on its structure and type, it can bear radial load, axial load, or radial and axial load at the same time.
Because the spherical sliding contact area of the knuckle-bearing is large, the inclination Angle is large, but also because most of the knuckle-bearing adopts special processing methods, such as surface phosphating, galvanized, chrome plating or external sliding surface lining, inserts, spraying, etc., so it has greater load capacity and impact resistance. And has the characteristics of corrosion resistance, wear resistance, self-aligning, good lubrication or self-lubrication without lubricating dirt pollution, even if the installation dislocation can work normally. Therefore, joint bearings are widely used in swing motion, tilt motion and rotation motion with low speed.

Joint bearings are mainly composed of an outer ring and an inner ring. The inner sphere of the outer ring and the outer sphere of the inner ring form the rolling friction pair.

Operating temperature
The allowable working temperature of knuckle bearings is mainly determined by the matching materials between the sliding surfaces of bearings, especially the sliding surfaces of plastic materials of self-lubricating knuckle bearings, whose bearing capacity will decline at high temperature. If the sliding surface material of a lubricated joint bearing is steel/steel, the allowable operating temperature depends on the allowable operating temperature of the lubricant. But for all lubricating and self-lubricating joint bearings, they can be used in the temperature range of -30℃ ~ +80℃, and maintain the correct bearing capacity.
Dip Angle
The dip Angle of the joint bearing is much larger than that of the general adjustable rolling bearing, which is suitable for use in the supporting parts with low concentricity requirements. The dip Angle of the joint bearing varies with the bearing structure size, type, sealing device and form of support. The dip Angle range of the general centripetal joint bearing is 3° ~ 15°, and the dip Angle range of the angular contact joint bearing is 2° ~ 3°. The dip Angle range of thrust joint bearing is 6° ~ 9°.
cooperate
In any case, the fit selected for the joint bearing shall not cause uneven deformation of the ring, and the choice of its fit nature and grade must be determined according to the bearing type, support form and load size and other working conditions.

(1) GE… Type E: single outer ring, no lubricating oil groove. Can withstand radial load and small axial load in any direction.
(2) GE… Type ES: single seam outer ring with lubricating oil groove. Can withstand radial load and small axial load in any direction.
(3) GE… ES-2RS, GEEW… ES-2RS: Single slit outer ring with lubricating groove with sealing ring on both sides. Can withstand radial load and small axial load in any direction.
(4) GE… ESN type: single slit outer ring, GE… XSN type: double slit outer ring (split outer ring), with lubricating oil groove, the outer ring has a stop groove. Can withstand radial load and small axial load in any direction. But when the axial load is borne by the stop ring, its ability to bear axial load is reduced.

5) GE… HS type: inner ring with lubricating oil groove, double and half outer ring, clearance can be adjusted after wear. Can withstand radial load and small axial load in any direction.
(6) GE… Type D 1: The inner ring is hardened bearing steel and the outer ring is bearing steel. The inner ring is extruded during assembly, with lubricating oil groove and oil hole. Bearing with inner diameter less than 15mm, without lubricating oil groove and oil hole. Can withstand radial load and small axial load in any direction.
(7) GE… Type DEM1: The inner ring is hardened bearing steel and the outer ring is bearing steel. When the inner ring is assembled, the bearing is squeezed into the bearing seat, and the end groove is pressed out on the outer ring to make the bearing axially fixed. Can withstand radial load and small axial load in any direction.
(8) GE… DS type: Outer ring with assembly groove and lubrication groove. Limited to large size bearings. It can bear radial load and small axial load in any direction (one side of the assembly groove cannot bear axial load).
Angular contact joint bearing
GAC… The inner and outer rings of type S are hardened bearing steel with oil grooves and oil holes in the outer rings. Can withstand radial load and one direction of axial (combined) load.
Thrust joint bearing
GX… S-shaped shaft ring and seat ring are hardened bearing steel; The seat ring has an oil groove and an oil hole. It can bear axial load or combined load in one direction (the radial load value shall not be more than 0.5 times of the axial load value).

1) SI… Type E is GE… E-bearing and rod end assembly. Rod end with internal thread, material is carbon structural steel, no lubricating oil groove. It can bear radial load and axial load less than or equal to 0.2 times radial load in any direction.
(2) SA… Type E is GE… E-bearing and rod end assembly. Rod end with external thread, the material is carbon structural steel; No lubricating oil groove, can bear radial load and any direction less than or equal to 0.2 times radial load axial load.
(3) SI… Type ES is GE… Type ES bearing and rod end assembly. Rod end with internal thread, the material is carbon structural steel; Lubricated oil groove. It can bear radial load and axial load less than or equal to 0.2 times radial load in any direction.
(4) SA… Type ES is GE… Type ES bearing and rod end assembly. Rod end with external thread, the material is carbon structural steel; Lubricated oil groove. It can bear radial load and axial load less than or equal to 0.2 times radial load in any direction.
(5) SIB… S-shaped rod end with internal thread, the material is carbon structural steel; The inner ring is hardened bearing steel; Lubricated oil groove. It can bear radial load and axial load less than or equal to 0.2 times radial load in any direction.
(6) SAB… S-shaped rod end with external thread, the material is carbon structural steel; The inner ring is hardened bearing steel; Lubricated oil groove. It can bear radial load and axial load less than or equal to 0.2 times radial load in any direction.
(7) SQ… Type I is spherical rod end joint bearing, rod end is carbon structural steel; The ball head is carburized steel. Can withstand radial load and small axial load in any direction.