Once you have identified the bearing's code some bearings come complete with seals or shields. This is known as the suffix in the bearings reference. Bearing Example. 6205 2RS1C3. The bearing type design that you need is a single row deep groove ball bearing with the following dimensions and suffix. d = 25mm D = 52mm B/T = 15mm. Result = 6205 Step 5: Calculate the bending stress in the shaft Step 6: Combine the bending stress and the torsional stress using the theories discussed in chapter 4 August 15, 2007 22 • Shaft shown drives a gear set that is transmitting 5 hp at 1750 rpm. • Shaft is supported in self-aligning ball bearings and gears are both 10 pitch, 40 tooth, 20° spur Medium size bearings (with the bore diameter between 50 and 100 mm) and large size ones (with the bore diameter between 100 and 200 mm) cannot be pressed on the shaft or in the housing cold due to the increase ofpressing forces with the bearing size increase. Thus, the spherical roller bearings are heated before mounting. The temperature X and Y are factors required for the calculation of equivalent dynamic bearing load for single and double row deep groove ball bearing, dependent upon axial load (Fa) and radial load (Fr). Therefore, if P o < F r, P = P o = F r. P o = Axial load and is equal to P o = 0.6Fr + 0.5Fa. Where, F r is the radial force and F a is the Axial Force. The shoulders of the shaft or housing in contact with the face of a bearing must be perpendicular to the shaft center line. (Refer to Table 11.1) The front face side shoulder bore of the housing for a tapered roller bearing should be parallel with the bearing axis in order to avoid interference with the cage. the shaft and the bearing resulting in high friction values. In this region of the curve, high bearing self-lubricity is of significant benefit. As the shaft speed increases we move into the second (Mixed) regime of the curve where the hydrodynamic film starts to build and effectively "lift" the shaft from the bearing surface. (a) Choose a shaft configuration to support and locate the two gears and two bearings. (b) Solution uses an integral pinion, three shaft shoulders, key and keyway, and sleeve. The housing locates the bearings on their outer rings and receives the thrust loads. (c) Choose fan-shaft configuration. Single row angular contact ball bearings and tapered roller bearings (ig. 1) are generally preloaded axially by mounting them against a second bearing of the same type and size in a back-to -back (load lines diverge) or face- to-f ace (load lines converge) arrange - ment. Deep groove ball bearings can also be Bearing preload 6306-2rs 30 72 19 6906-2rs 30 47 9 60/32 32 58 13 60/32-2rs 32 58 13 62/32-2rs 32 65 17 20-1039 34 58 24 20-1056-2rs 34 61 27 16007 35 62 9 20-1025-2rs 35 58 15 to optimize belt life and performance and to avoid undue stress on shafts and bearings it is desirable to calculate and measure belt tension based on drive loads. This standard provides a method for calculating and measuring V-Belt tensions and for calculating shaft loads associated with these tensions on two sheave locked center drives. A It is the inner diameter of the bearing and measured in millimeters. In general, the bore size is equal to five times the third and forth digit of bearing's patter number. However, from '0' to '3', this formula does not imply. The bore size indicated by '0' to '3' a