Bearings from the NSK company usually consist of two rings or discs, rolling elements and a cage. Depending on the direction of the main load, a distinction is made between two basic types: radial bearings and thrust bearings. Depending on the type of rolling elements used, they are also classified as ball bearings or roller bearings.
NSK single row deep groove ball bearings
Deep groove ball bearings are the most common type of bearing. These bearings predominantly absorb radial forces, but axial loads can be imposed in both directions to some extent. Other design features may include stamped steel seals, shields and cages. These bearings are particularly suitable for applications with very high speeds and low friction losses.
NSK radial self-aligning ball bearings
The outer ring of this type of bearing has a spherical raceway; the spherical complement and inner ring are capable of self-aligning. This makes self-aligning ball bearings ideal when it is difficult to align the shaft and housing and when the shaft may deviate. Self-aligning ball bearings absorb radial and axial forces.
NSK Angular Contact Ball Bearings
In addition to radial forces, single row angular contact ball bearings are capable of withstanding high axial forces in one direction. Forces are transferred from one track to another at the contact angle (α). Various contact angles are available, but small contact angles are advantageous for high-speed operation.
Double row angular contact ball bearings consist of two single row angular contact ball bearings arranged against each other. They can absorb axial forces in both directions.
NSK cylindrical roller bearings
Cylindrical roller bearings are characterized by a high radial load capacity, which results from the linear contact between the rolling elements and the raceways. Some types can also withstand axial forces, depending on the design. Cylindrical roller bearings are separable.
Double row cylindrical roller bearings have high radial rigidity. They are used for applications such as high-precision machine tools.
NSK needle bearings
Needle roller bearings are a special type of cylindrical roller bearing. Absorbs only radial forces. These bearings have very long and thin rolling elements, with a length of three to ten times their diameter.
NSK tapered roller bearings
Due to their contact angle (α), tapered roller bearings are able to withstand high radial and axial loads in one direction. These bearings are usually assembled in pairs to absorb axial forces in both directions.
NSK spherical roller bearings
Spherical roller bearings can be used to compensate for misalignment between shaft and housing since their outer ring has a spherical raceway. Spherical roller bearings can withstand high radial loads and medium axial loads.
NSK thrust bearings
One-way thrust ball bearings consist of two washers with ball races. This design allows it to absorb purely axial forces.
Double direction thrust ball bearings have three washers. The central one is attached to the tree. Bearings of this type can withstand axial forces in both directions.
Spherical roller thrust bearings can withstand very high axial loads and lower radial loads.
