you first think of the tableware commonly used at home. With the development of science and technology, the physical properties of ceramics have been applied to all walks of life, including the bearing industry. Let’s introduce the advantages of ceramic bearings! because ceramics are hardly afraid of corrosion, ceramic rolling bearings are suitable for operation under harsh conditions full of corrosive media.
because the density of ceramic rolling ball is lower than that of steel and the weight is much lighter, the centrifugal effect on the outer ring during rotation can be reduced by 40%, and Ceramic Bearings the service life can be greatly prolonged.
ceramics are less affected by thermal expansion and cold contraction than steel. Therefore, when the bearing clearance Ceramic Bearings is certain, the bearing can be allowed to work in an environment with drastic temperature difference.
Fourth, because the elastic modulus of ceramics is higher than that of steel and is not easy to deform under stress, it is conducive to improve the working speed and achieve high precision.
because ceramic bearings have so many advantages in application, major imported bearing manufacturers such as SKF bearings, NSK Bearings Ceramic Bearings and fag bearings are involved in this field and launch corresponding products
Ceramic Bearings composed of outer ring, inner ring, steel ball and cage. It can bear both radial load and axial load, and can also bear pure axial load. It can work stably at high speed. Single row angular contact ball bearings can only bear axial load in one direction. When bearing pure radial load, this kind of bearing must be installed in pairs because the load action line of rolling element and radial load action line are not in the same radial plane, resulting in internal axial component force.
The code name of this bearing is s70000.Ceramic Bearings There is no lock on the raceway edge of its outer ring, which can be separated from the inner ring, cage and ball assembly, so it can be installed separately. Most of these are micro bearings with inner diameter less than 10mm, which are used in gyro rotor, micro motor and other devices with high requirements for dynamic balance, noise, vibration and stability.
The ring channel of this kind of bearing has a locking port, so the two rings cannot be separated. Ceramic Bearings There are three types according to contact angle:
① contact angle α= 40 °, suitable for bearing large axial load;
② contact angle α= 25 °, mostly used for precision spindle bearings;
③ contact angle α= 15 °, mostly used for large-size precision bearings.
are used to bear both radial load and axial load. Ceramic Bearings They can also bear pure radial load and axial load in either direction. This kind of bearing is selected and combined in pairs by the manufacturer according to certain preload requirements and provided to users.
When the bearing is installed on the machine and fastened, the clearance in the bearing is completely eliminated, and the ferrule and ball are in the pre tightening state, so the rigidity of the combined bearing is improved.
namely radial thrust ball bearing, can be loaded with more steel balls, Ceramic Bearings its radial bearing capacity is greater than that of ordinary ball bearing, and can also bear large axial load or pure axial load at the same time. Its allowable working speed is similar to that of deep groove ball bearing and its support rigidity is stronger, but it requires accurate installation and is very sensitive to axis misalignment error,
Generally, it does not need to bear the radial load alone, but it must bring additional axial load while bearing the radial load. This kind of bearing has many variants and is widely used. It is often made into three series with 15 °, 25 ° and 40 ° contact angles. Ceramic Bearings The larger the contact angle is, the higher its axial load capacity is. However, it is appropriate to use a small contact angle at high speed.
Most of these bearings are used in pairs for small-span rigid double support shafts or precision spindles. When in use, the clearance should be carefully adjusted. By changing the axial distance between the inner and outer rings of the bearing, the internal clearance of the bearing can be adjusted.
At the same time, several sets of bearings can be installed in parallel and given a certain pre interference, which can improve the bearing system.