Tech information
Bearing tolerance symbols
The bearing tolerance symbols are a list of codes and bymbols which used in the bearing tolerance tables. However, in some cases the code or symbol definition has been abbreviated.... [Read more]
Terminology of rolling bearing
Some frequently used bearing terms are explained here. For a detailed collection of bearing-specific terms and definitions, refer to ISO 5593 Rolling bearings
Symbols
Symbols used in this catalogue are mainly in accordance with ISO standards.
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Bearing selection criteria
There are a lot of bearing types, from which the designer can choose the one that best suits his needs. Due to the variety of applications and the different influences on the bearing position, it is not, however, possible to give generally applicable rules here for the selection of the bearing type.
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Types and Feature of Rolling bearings
Rolling bearings generally consist of two rings, rolling elements, and a cage, and they are classified into radial bearings or thrust bearings depending on the direction of the main load.
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Bearing tolerance, accuracy
Bearing tolerances refer to three aspects of accuracy: external dimensional accuracy, machining accuracy, and running accuracy.... [Read more]
Internal clearance of deep groove ball bearings
Deep groove ball bearings are manufactured as standard with radial internal clearance CN (normal). CN is not stated in the designation.
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Bearing internal clearance
Bearing internal clearance is defined as the total distance either inner or outer ring can be moved when the other ring is fixed.
If movement is in the radial direction, it is called radial internal clearance; if in the axial direction, axial internal clearance.
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Main dimensions for rolling bearings
The main dimensions of rolling bearings are the key dimensions of a rolling bearing. They include
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