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Dez . 03, 2024 19:28 Back to list

deep groove ball bearing nomenclature

Understanding Deep Groove Ball Bearing Nomenclature

Deep groove ball bearings are one of the most widely used types of rolling bearings due to their versatility and ability to support both radial and axial loads. These bearings are characterized by their deep raceway grooves, which allow them to accommodate a higher number of balls and hence provide greater load-carrying capacity. Understanding the nomenclature associated with deep groove ball bearings is essential for selecting the right bearing for various applications.


Basic Structure and Design


A deep groove ball bearing consists of an inner ring, an outer ring, a set of balls, and a cage that holds the balls in place. The design allows for smooth rotation and minimizes friction, making them suitable for high-speed applications. The deep groove provides a greater contact area between the balls and the raceways, thus improving load distribution and enhancing longevity.


Nomenclature Breakdown


The nomenclature of deep groove ball bearings is typically defined by a combination of letters and numbers that provide essential information about the bearing’s dimensions, type, and specifications

. A common format used in industry is represented as follows 620X, where ‘6’ is the series, ‘2’ indicates the type, and ‘0’ refers to the bore diameter.


1. Series Number The first digit or digits denote the series. For instance, a ‘6’ indicates a deep groove ball bearing, while ‘3’ refers to deep groove ball bearings designed for higher loads.


2. Type The second digit denotes the type of bearing. For example, in the 620 series, ‘2’ specifies the configuration of the bearing, where different configurations may indicate variations in the cage design or sealing.


deep groove ball bearing nomenclature

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3. Bore Diameter The last digit usually denotes the bore diameter of the bearing, measured in millimeters. For example, a ‘0’ at the end of the 620 series indicates a bore diameter of 10mm, while size increases correspondingly with greater digits.


4. Additional Modifications Other letters may follow the series number to denote special features or modifications of the bearing, such as ‘C’ for a contacting seal, or ‘Z’ for a shield. Other designations, such as ‘RS’ or ‘2RS,’ refer to rubber seals on one or both sides of the bearing, enhancing the protection against dust and moisture.


5. Precision and Load Rating Additional codes may indicate load ratings, precision levels (e.g., P0, P6, P55 ratings), and other operational characteristics like speed capabilities. This information is essential for engineers and designers who must ensure bearings meet specific performance standards.


Application of Nomenclature


Understanding the nomenclature is crucial for engineers and technicians in the industry. By deciphering the alphanumeric designation of a bearing, one can quickly identify its size, shape, load capacity, and specialized features. This is particularly important when sourcing replacement parts or designing machinery that relies on precise specifications for optimal performance.


Conclusion


Deep groove ball bearings are fundamental components in numerous mechanical applications, from small electronic devices to large industrial machinery. Grasping their nomenclature allows professionals to communicate effectively about specifications, ensuring compatibility and performance in assemblies and machinery. As technology advances and applications diversify, a solid understanding of bearing nomenclature will continue to be invaluable in the field of mechanical engineering and design. By familiarizing oneself with the intricacies of this language, one can make informed decisions that enhance operational efficiency and reliability.


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