PDF | The purpose of a bearing is to support a load whilst allowing relative motion between two elements of a machine. The lubricant type and its supply temperat ure, (figure (VII-8 In straight bridges, the following types of metallic bearings are adopted. •Sliding plate bearing •Steel roller bearing •Steel roller cum rocker bearing •Steel rocker bearing •Steel knuckle bearing • Diameter of roller (D) ≥ 75mm • L/D ≤ 10 • Lug width ≥ 10mm • No. of lug = 2 for L/D ≤ 6 = 3 for L/D > 6 • P ≥ 50mm • t ≥ 20mm or ¼ of S Cylindrical roller bearings cylindrical roller bearings are designed to transport heavy loads, the primary lamellar element is a cylinder, which means that the load is distributed over a larger area, which allows That the bearing handles large amounts of weight. optimum bearing arrangements for all types of locations and applica-tions. The performance of FAG su-per precision bearings in a specific application is achieved in particu-lar through close co-operation with the customer. The higher and more complex the demands, the better ball bearings roller bearings thrust ball bearings angular contact thrust ball bearings thrust cylindrical roller bearings thrust needle roller bearings thrust tapered roller bearings thrust spherical roller bearings automotive clutch release bearings rolling stock axle bearings crane-sheave bearings bearings for specific uses chain conveyor … Bearings. User's handbook. 7 Figure 2.1 d. Basic static load Basic static load, Cor, is given in the bearings catalogues for every size and it is taken in consideration when the bearing is stationary, has slow oscillations, low speed (n<10 rot/min) or when during the rotating these Bearing Type Radial load capacity 1234 Single-Row Deep Groove Ball Bearings Single-Row Angular Contact Ball Bearings Cylindrical Roller(1) Bearings Tapered Roller Bearings Spherical Roller Bearings Axial load capacity Bearing Types Relative permissible speed 1 4 7 10 13 porous carbon type, orifice air bearings can be made to have fewer than five 0.1 micron particle emissions per minute. The relative simplicity of orifice type bearings often results in the lowest manufacturing costs. Slot feeding This type of air inlet is similar to orifice air bearings but in place of a small hole is a rectangular slot. Rolling element bearings can be subdivided into two major types: ball bearings and roller bearings. Ball Bearings Ball bearings are one of the most common types of bearing classes used. It consists of a row of balls as rolling elements. They are trapped between two annulus shaped metal pieces. These metal pieces are known as races. In cases where the degree of misalignment is relatively large, self-aligning ball bearings, spherical roller bearings, or bearing units with self-aligning properties are the most appropriate choices. (Refer to fig. 2.1) . 1. Radial or journal bearings: In this type of bearing, the loading is at right angles to the bearing axis, such that bearing is installed perpendicular to the axial line of the shaft. 2. Thrust bearings: In these types of bearings, the loading is parallel to the bearings axis and collar is used to rotate the shaft at one position. 3. The radial ball bearing is designed to accommodate primarily radial loads but the deep groove type will support bidirectional thrust loads up to 35% of the radial load before bearing life becomes progressively shorter. The assembled radial bearing is inseparable and may be equipped with seals, shields, and/