What are the bearings that can withstand both radial and axial forces
In many mechanical equipment, bearings as a kind of rotating at the same time to provide load-bearing capacity of the parts, will often require to carry a certain direction of the load, and some times need bearings can simultaneously withstand radial and axial load, which needs to be selected and discriminated among the many types of bearings, that can simultaneously withstand the radial force and axial force of the bearing which?
A, spherical roller bearings
Spherical roller bearings are equipped with spherical rollers between the outer ring of spherical raceway and the inner ring of double raceway, which are divided into four types of R, RH, RHA and SR according to the different internal structures. As the outer ring raceway arc and bearing consistent, with the spherical performance, so it can automatically adjust the shaft or shell deflection or different heart caused by the axis of the misalignment. Can bear radial load and two-way axial load. Especially the radial load capacity is large, suitable for bearing heavy load and shock load.
Thrust spherical roller bearings with spherical profile of the roller, with a steeper angular position arrangement, not only can withstand higher axial load, but also can withstand moderate radial load, and its geometric design and manufacturing process to make its friction is very small, suitable for heavy loads and the establishment or maintenance of bearing seat alignment difficulties or shaft will produce deformation of the application.
Second, deep groove ball bearings
In the structure, deep groove ball bearing each ring has a cross-section of about one-third of the equatorial circumference of the ball continuous groove type raceway. Deep groove ball bearings are mainly used to bear radial load, but also can bear a certain axial load. When the radial clearance of the bearing is increased, with angular contact ball bearing properties, can withstand two directions of the alternating axial load. Compared with other types of bearings of the same size, this type of bearing has a small coefficient of friction, high speed, high precision, and is the bearing type that users give priority to when selecting the type.
Third, crossed roller bearings
In crossed roller bearings, because the cylindrical rollers are arranged perpendicular to each other through the interval keeper, so one crossed roller bearing can bear radial load, axial load and moment load and other loads in all directions. Because the rollers are arranged vertically on the 90° V-groove rolling surface through the interval keeper, this design makes the crossed roller bearings can withstand large radial load, axial load and moment load in all directions. There are two main types of crossed roller bearings, one is crossed cylindrical roller bearings, the other is crossed tapered roller bearings.
1、Crossed cylindrical roller bearings
Crossed cylindrical roller bearings are a kind of bearings with cylindrical rollers arranged vertically crossed between inner and outer rings of the bearing, with linear contact between rollers and raceways, good rigidity, very small elastic deformation of the bearing under load, and able to bear radial load, axial load and moment load at the same time, especially suitable for applications requiring high rigidity and high rotational accuracy.
2、Cross tapered roller bearings
Crossed tapered roller bearings are two rows of tapered rollers in the 90° V-shaped raceway surface through the interval keeper vertical cross arrangement, can withstand radial load, axial load and other loads in all directions. The linear contact on the raceway and roller structure provides large rotational accuracy, high stability and greater tilting rigidity.
Fourth, tapered roller bearings
Tapered roller bearings belong to the separated bearing, bearing inner and outer ring have tapered raceway. These bearings are divided into single row, double row and four row tapered roller bearings and other different structure types according to the number of rollers installed. Single row tapered roller bearings can bear radial load and single direction axial load, mainly used to bear radial load mainly radial and axial combined load.
Single tapered roller bearing outer ring raceway taper angle in 10 ° ~ 19 ° before, can simultaneously withstand the combined effect of axial load and radial load. The larger the cone angle, the greater the ability to withstand axial load. Large taper angle bearing, post code plus B, cone angle in 25 ° ~ 29 °, it can withstand the larger axial load. In addition, single row tapered roller bearings can be installed in the process of adjusting the size of the clearance. Compared with angular contact ball bearings, large load carrying capacity and low speed.
Crossed tapered roller bearings
Five, angular contact ball bearings
Angular contact ball bearings because of its inner and outer ring raceway can have relative displacement in the horizontal axis, so it can bear radial load and axial load at the same time, can work at a higher speed, the larger the contact angle, the higher the axial load carrying capacity, so it can also bear pure axial load.
Double row angular contact ball bearing can bear larger radial load mainly radial, axial two-way combined load and moment load, it can limit the shaft or shell two-way axial displacement, contact angle of 30 degrees. Pairs of installed angular contact ball bearings can withstand radial load-based radial, axial two-way combined load, can also withstand pure radial load.
Angular contact ball bearings are mainly used in metallurgical equipment, mining machinery, engineering machinery, paper making machinery, wind turbines, semiconductors, machine tools, gear units, electric motors (motors), pumps and compressors, injection molding machines, motorcycles and other fields.
