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Bearing in Centrifugal pumps SKF

This application handbook is one in a series of application handbooks designed to give SKF® customers with particular application recommendations when used in conjunction with the SKF General Catalog. It is not possible to offer all of the information required to cover each application in detail in the restricted area of this manual. For particular bearing suggestions, contact SKF application engineers. The greater the technical requirements of an application and the more restricted the existing experience, the more beneficial it is to engage SKF's engineering service. We hope you find this manual informative and fascinating.

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Principle of Centrifugal Pump:

A pump is a device that uses suction or pressure to raise, transfer, or move fluids from one location to another. Figure depicts a centrifugal pump, which employs the kinetic energy of a revolving impeller to impart motion to the fluid. The revolving impeller propels the fluid through its vanes and into the pump casing, where the flowing fluid's kinetic energy is transformed to potential energy at higher pressure. More fluid is drawn into the pump intake where the pressure is lowest as the fluid exits the impeller via the pump discharge. As more fluid enters the impeller, this fluid travels through it.

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Centrifugal pumps are classified into three types based on the direction the fluid enters the impeller's entrance (eye): radial flow, mixed flow, and axial flow. Radial and mixed flow pumps are available in single or double suction configurations.

Head, H, is produced by a centrifugal pump as a function of the rate of fluid flow, Q, via the impeller.

Table of contents

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• Preface
• General
• Pump bearings
• Ball bearings in centrifugal pumps
• Roller bearings in centrifugal pumps
• Bearing technologies for the next generation pump
• Bearing installation

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