Bearings and Supports

Since 1939, NACHI has been developing bearings of the highest caliber. Every step of production is carried out and controlled at NACHI's own plants, from the steel mill and heat treatment to the machining of components and the assembly of bearings.

Today, NACHI offers a wide range of ball bearings, roller bearings, spherical roller bearings, and precision bearings for applications in general machinery, agriculture, transmission, fluid power, aerospace, and the demanding automotive industry.

In general, contact bearings can be classified as radial or thrust bearings depending on the bearing design, or they can be classified as ball or roller bearings depending on the type of rolling element. Radial bearings are primarily designed to support a load perpendicular to a shaft axis, while thrust bearings accept loads parallel to the shaft axis. Using the classification of ball bearings and roller bearings, roller bearings can be divided into subclasses according to the shape of the roller: cylindrical roller bearings, tapered roller bearings, spherical roller bearings, or needle roller bearings. Ball bearings can be divided according to the number of rows into single-row or double-row (for thrust ball bearings, single-direction and double-direction). Ball bearings can be further subdivided into smaller segments according to the relationship between the bearing rings and the rolling elements; the shape of the bearing rings; and the use of accessories. Bearings are also classified by specific applications, such as clutch release ball bearings for automotive applications.

This link shows a table listing the main types of radial and axial bearings and a summary of their design.