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Published in Heinz P. Bloch, Allan R. Budris, Pump User’s Handbook, 2021
Heinz P. Bloch, Allan R. Budris
The spherical roller thrust bearing is used in vertical pumps, as shown in Figure 7-42, to support combined axial and radial load. In some cases, the bearing is used with a separate ball bearing that supports radial load, or reversing axial load. In some cases, a thrust bushing is utilized to support reversing axial load. In heavy duty centrifugal pumps, deep-well pumps, and also in hydro-turbines, the spherical roller thrust bearing is sometimes used in combination with the spherical roller bearing which supports the radial load, and the thrust bearing supports the axial load. The thrust bearing is spring preloaded to ensure the minimum load requirements are satisfied when the pump’s axial load reverses direction. Short-duration reverse axial loads are supported temporarily by the radial bearing.
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Published in Heinz P. Bloch, Kenneth E. Bannister, Practical Lubrication for Industrial Facilities, 2020
Heinz P. Bloch, Kenneth E. Bannister
In recent years bearing materials, design and calculation methods of fatigue life have been substantially improved [5,6]. The major improvements include: a more accurate method of fatigue life prediction; the new approach takes into account operating temperature, lubricant viscosity and lubricant contamination.it is now possible to obtain almost infinite bearing life; provided that loads are lower than fatigue limit (these are given in bearing catalogues) and utmost cleanliness of the lubricant is being assured.new spherical roller bearing designs offer substantial increases in dynamic load capacity and consequently much longer service life when compared with ball bearings.
Temperature Effect on Load Distribution, Friction, and Wear of a Grease-Lubricated Spherical Roller Bearing (SRB)
Published in Tribology Transactions, 2023
Abdul Mannan, Matthew L. Pozzebon, William J. T. Daniel, Paul A. Meehan
This section presents the modelling of the effect of temperature on the wear of a grease-lubricated spherical roller bearing. Figure 1 shows a schematic of a spherical roller bearing, including its components (an inner race, an outer race, two cages, and two rows of rollers). The basis of this work is the Pozzebon et al. (25) wear model for the grease-lubricated spherical roller bearing, so this section provides an overview of it.