What is roller bearings
Roller bearings are one of the rolling bearings. Roller bearings rely on the rolling contact between the main parts to support the rotating parts.Different roller bearings can withstand different radial and axial forces.It is also one of the widely used parts in modern machinery.
Rolling bearings are divided into ball bearings and roller bearings according to the rolling power body.Roller bearings rely on the rolling contact between the main parts to support the rotating parts.Different roller bearings can withstand different radial and axial forces.When choosing roller bearings, the choice should be made according to the specific working conditions.
Characteristics of roller bearings
Roller bearing roller and raceway for line contact, radial bearing capacity is large, suitable for bearing heavy load and impact load.Small friction coefficient, suitable for high speed, limit speed close to deep groove ball bearings.The processing requirements for shaft and seat hole are higher.
Application of roller bearings
Different types of roller bearings may have different applications, let’s check them out:
Self-aligning roller bearings
Because the outer channel table is a sphere centered at the center of the bearing, it can automatically self-aligning. It belongs to the centripetal bearing and allows the tilt of the inner and outer ring axis to be less than 1.5°~2.5°.
Thrust self-aligning roller bearings
It belongs to centripetal thrust bearing, but the radial load shall not exceed 55% of the axial load.
In order to ensure its normal operation, it is generally necessary to apply a certain axial preload.
Tapered roller bearings
It belongs to centripetal thrust bearing.The outer ring can be separated and the clearance of the bearing can be installed.Usually used in pairs.
Cylindrical roller bearings
Belongs to centripetal bearings.The outer ring (or inner ring) can be separated, so it cannot bear axial load.
What are the characteristics of bearing steel of roller bearing materials
Features of bearing steel:
1.Contact fatigue strength.
Bearing under the action of periodic load, the contact surface is very easy to attack fatigue damage, that is, the emergence of cracking and spalling, which is an important damage situation of bearings. Therefore, in order to improve the service life of bearings, bearing steel must have a very high contact fatigue strength.
2. Wear resistance.
When the bearing task, there is not only rolling friction, but also sliding friction between the ring, the rolling body and the support frame, so that the bearing parts have been worn away. In order to increase the wear of bearing parts, maintain the accuracy and stability of bearings and extend the service life, bearing steel should have good wear resistance.
3.Hardness.
Hardness is one of the important qualities of bearing quality, which has indirect influence on the contact fatigue strength, wear resistance and elastic limit of bearing steel. The hardness of bearing steel in use should reach HRC61-65 individually, and the ability makes the bearing obtain higher contact fatigue strength and wear resistance.
4.Anti-rust performance.
In order to avoid bearing parts and finished products being corroded and rusted during processing, storage and use, bearing steel is required to have good rust resistance.
5. Processing performance.
Bearing parts have to go through many cold and hot processing procedures in the consumption process. In order to meet the requirements of a small amount, high efficiency and high quality, bearing steel should have good processing performance. For example, cold and hot forming performance, cutting performance, hardenability and so on.
In addition to the above basic requirements, bearing steel should also reach the appropriate chemical composition, average external organization, less non-metallic dopant, external appearance defects conform to the specifications and the appearance of decarburization layer does not exceed the regular concentration and other requirements.
The price of roller bearings
The price of roller bearings is affected by many factors such as market, material and quotation. If you want to know the specific price of roller bearings,please contact us to make enquiries.
Supplier of roller bearings:BMB Bearings
BMB Bearings is the complete one-stop supplier of OEMs and wholesalers purchasing high-precision, miniature ball bearings, industrial ball bearing related products, as well as related professional services, including world-class engineering and design. If you have any need, please feel free to contact us .