Bearing types and applications pdf

The rolling elements distinguish the two basic bearing types – ball bearings and roller bearings. In a tapered roller bearing , the center lines do not converge at a common point. The separator, which retains the balls or rollers, is also called the cage. In order to reduce frictional resistance and wear and in some cases to carry away the heat generate a layer of fluid (known as lubricant) may be provided.

The lubricant used to separate the journal and bearing is usually a mineral oil refined from petroleum, but vegetable oils, silicon oils, greases etc. There are also bearings designed for special applications , such as: railway car journal roller bearings , ball screw support bearings , turntable bearings , as well as linear motion bearings (linear ball bearings , linear roller bearings and linear flat roller bearings ). Types of rolling bearings are given in Fig. Depending upon applications described above, bearing can be divided into following types , the differences between types of bearings concern load type and ability to handle weight. This movement is either rotary (shaft rotating within a mount) or linear (one surface moving along another). Start with a free body diagram.

In general, sliding contact bearings do best when the materials in con-. A steel shaft should not run in a steel bore , but it can run in. The ball bearings are the most common and the most utilized applications on the market, being able to withstand axial and radial loads. Its main feature is the rotation spee being higher than in oth.

What is a bearing part number? JOURNAL BEARING DESIGN TYPES AND THEIR APPLICATIONS TO TURBOMACHINERY by Dana J. Salamone received his B. It has a split outer race shell into which the roller assembly is inserted. The bearings are contained by hardened washers. In addition, depending on the type of rolling elements, they are classified into ball bearings or roller bearings, and they are further segregated by differences in their design or specific purpose. The nomenclature for the most important features of these bearings is given in Fig.

Typical applications include: crane hooks, pulverizers, cone crushers and other heavy-loa medium-speed applications. There are thousands of different types of roller bearings available to meet specific application requirements. These bearings feature rollers that are longer than their diameter, and can tolerate higher loads than ball bearings. Our cylindrical roller bearings can carry heavy radial loads and are able to be used in high-speed applications. There are many types of bearings, each used for different purposes.

These include ball bearings, roller bearings, ball thrust bearings, roller thrust bearings and tapered roller thrust bearings. Ball bearings, as shown below, are probably the most common type of bearing. Bearing shells and thrust washer(Fig. 1) 1. There are at least common types of bearing , each of which operates on different principles: Plain bearing , consisting of a shaft rotating in a hole.

Special applications require bearings made from stainless steel or ceramics or surface-coated bearings. For some applications , a hybrid bearing type is more suitable. In this kind of bearing , the rings are made from steel and the rolling elements are ceramic. ROTA TING TECHNOLOGY, INC. John Nicholas received his B. For machines in which bearings are mounted and dismounted rather often for periodic inspection, these types of bearings are recommended.

The challenge is to define the need and then to select the best type. Contact the SKF application engineering service through your local SKF representative if you have any questions, or require any assistance, when using the bearing selection process guidelines or information here and in the product sections. Giant roller bearings and magnetic bearings are two types of specific applications for which specialized bearings are manufactured. When moving large structural components, buildings, and other heavy loads, giant roller bearings come in handy. The basic parts of a ball bearing include.

Inner Race – This is the part that is mounted on the rotating shaft and tends to rotate the shaft. Outer Race – This is the part that is mounted to the housing and is stationary. This also serves as a means for transferring the loads from the bearing to the housing.