The 7303 bearing is a high-precision, single-row angular contact ball bearing designed to accommodate combined loads—simultaneously supporting both radial and axial forces. With its specific dimensions of a 17mm bore diameter, 47mm outer diameter, and 14mm thickness, this bearing is a key component in applications requiring high rotational speeds and significant axial rigidity. Its compact design and robust performance make it a core component in equipment requiring precise load distribution and stable rotation, serving industries from machinery to automotive.
1. Combined Load Capacity: The angular contact structure enables it to bear both radial loads and significant unidirectional axial loads, suitable for mechanical parts under composite stress.
2. High Rigidity & Precision: Precision-machined raceways and high-quality balls ensure low radial runout and high rotational accuracy, maintaining stable operation of high-precision equipment.
3. Versatile Contact Angles: Available with different contact angles (15° for high speed, 40° for heavy axial load), allowing customization to match diverse application requirements.
4. Durable & Efficient: Made of high-strength bearing steel with heat treatment, it resists wear and high temperatures; optimized cage design reduces friction, extending service life and saving energy.
1. Industrial Motors & Pumps: Used in small and medium-sized AC/DC motors, centrifugal pumps, and vacuum pumps, enduring combined loads during high-speed rotation.
2. Machine Tools: Applied in spindle components of light machine tools (e.g., drilling machines, milling machines) and auxiliary shafts, ensuring precise machining accuracy.
3. Automotive Components: Fits automotive transmission auxiliary shafts, steering systems, and small electrical parts (e.g., alternators), adapting to vehicle vibration and load changes.
4. Precision Instruments & Devices: Suitable for rotating parts of medical equipment (e.g., small centrifuges), optical instruments, and textile machine drafting shafts, requiring high precision and stability.


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