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List Of Common Bearing Knowledge

Source:  skf bearing  Time:  2020-07-24

1. Angular contact ball bearings


   There is a contact angle between the ring and the ball. The standard contact angles are 15°, 30° and 40°. The larger the contact angle, the greater the axial load capacity. The smaller the contact angle, the more conducive to high-speed rotation. Single row bearings can Withstand radial load and unidirectional axial load. The two single row angular contact ball bearings combined on the back of the structure share the inner ring and outer ring, which can bear radial load and bidirectional axial load.


   The main purpose:


   Single row: machine tool spindle, high frequency motor, gas turbine, centrifugal separator, front wheel of small car, differential pinion shaft.


   Double rows: oil pumps, roots blowers, air compressors, various transmissions, fuel injection pumps, printing machinery.


2. Self-aligning ball bearings


   Double-row steel balls, the outer ring raceway is inner spherical, so it can automatically adjust the axis misalignment caused by the deflection or misalignment of the shaft or housing. The tapered bore bearing can be easily installed on the shaft through the use of fasteners. Withstand radial load.


   Main uses: woodworking machinery, textile machinery drive shaft, vertical self-aligning bearing with seat.

SKF Bearing 22316 EK online, click here for more details.


3. Spherical roller bearings


   This type of bearing is equipped with spherical rollers between the outer ring of the spherical raceway and the inner ring of the double raceway. According to the internal structure, it is divided into four types: R, RH, RHA and SR. Because the arc center of the outer ring raceway is The center of the bearing is consistent, with self-aligning performance, so it can automatically adjust the axis misalignment caused by the deflection or misalignment of the shaft or housing, and can withstand radial load and bidirectional axial load.


   Main uses: papermaking machinery, reduction gears, railway vehicle axles, rolling mill gearbox seats, rolling mill roller tables, crushers, vibrating screens, printing machinery, woodworking machinery, various industrial reducers, vertical self-aligning bearings with seats .


4. Thrust spherical roller bearings


   In this type of bearing, the spherical rollers are arranged obliquely. Because the raceway surface of the race is spherical and has self-aligning performance, it can allow the shaft to have a certain tilt, and the axial load capacity is very large. It can also bear several For radial load, oil lubrication is generally used when in use.


   Main applications: hydroelectric generators, vertical motors, propeller shafts for ships, reducers for rolling screws of rolling mills, tower cranes, coal mills, extruders, and forming machines.


5. Tapered roller bearings


    This type of bearing is equipped with truncated cone-shaped rollers, the rollers are guided by the large rib of the inner ring, and the design makes the vertices of the inner ring raceway surface, the outer ring raceway surface and the conical surface of the roller rolling surface intersect with the center line of the bearing On the point. Single row bearings can bear radial load and unidirectional axial load, double row bearings can bear radial load and bidirectional axial load, suitable for bearing heavy load and impact load.


    Main applications: Automobile: front wheel, rear wheel, transmission, differential pinion shaft. Machine tool spindles, construction machinery, large agricultural machinery, railway vehicle gear reduction devices, rolling mill roll necks and reduction devices.Eric Bearing Limited has stock for SKF 32317 J2, contact us for more information about it.


6. Deep groove ball bearings


    Structurally, each ring of a deep groove ball bearing has a continuous groove raceway with a cross-section approximately one third of the equatorial circumference of the ball. Deep groove ball bearings are mainly used to bear radial load, but also can bear certain axial load.


    When the radial clearance of the bearing increases, it has the properties of an angular contact ball bearing and can withstand alternating axial loads in two directions. Compared with other types of bearings of the same size, this type of bearing has a small friction coefficient, high limit speed, and high accuracy. It is the preferred bearing type for users when selecting models.


    Main uses: automobiles, tractors, machine tools, motors, water pumps, agricultural machinery, textile machinery, etc.


7. Thrust ball bearings


    It consists of a washer-shaped raceway ring with a raceway and a ball and cage assembly. The raceway ring that matches the shaft is called the shaft ring, and the raceway ring that matches the housing is called the seat ring. Two-way bearings match the secret shaft of the middle ring. One-way bearings can bear one-way axial loads, and two-way bearings can bear two-way axial loads (both can't bear radial loads).


    Main uses: automobile steering pins, machine tool spindles.


8. Thrust roller bearings


    Thrust roller bearings are used to bear the main axial load of the shaft, combined longitudinal load, but the longitudinal load must not exceed 55% of the axial load. Compared with other thrust roller bearings, this type of bearing has a lower friction factor, higher speed, and has the ability to adjust the center. The rollers of type 29000 bearings are asymmetrical spherical rollers, which can reduce the relative sliding of the stick and raceway during work, and the rollers are long and large in diameter. The number of rollers is large and the load capacity is large. They are usually lubricated by oil. Grease lubrication can be used at low speeds.


    Main uses: hydroelectric generators, crane hooks.

   Eric Bearing Limited has more than ten years of rich experience in the export of bearings, with competitive prices and good qualityWe export to more than 50 countries and regions around the world. We have won wide acclaim from customers.