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7304B-Angular contact ball bearings for precision machinery

  • 7304B-Angular contact ball bearings for precision machinery
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Product description Technical parameter
Precision angular contact ball bearing, belongs to the deep groove ball bearing deformation structure, suitable for all kinds of precision machinery selection, this series of bearings can bear radial load and axial load at the same time, can work at a higher speed. The larger the contact angle, the higher the axial load carrying capacity. According to the axial load size, contact angle is mainly divided into C-15 degrees, AC-25 degrees, A-30 degrees, B-40 degrees type structure, small friction coefficient, high limit speed, high manufacturing accuracy, can provide high-speed ceramic ball series bearings and sealed series bearings, cage mainly organic processing window brass cage, steel plate stamping cage, glass fiber reinforced nylon cage (nylon), and phenolic Laminated cloth tube cage (rubber wood), also can provide universal pair and any pair combination bearings. Mainly used in: machine tool spindles, high frequency motors, gas turbines, centrifugal separators, small car front wheels, differential pinion shafts, booster pumps, drilling platforms, food machinery, indexing heads, welding machines, low-noise cooling towers, electromechanical equipment, coating equipment, machine tool groove plates, arc welding machines, water pumps, modules, and support seats.

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Ningbo WTOO Machinery Technology Co., Ltd.is China 7304B Grease-Lubricated Sealed Angular Contact Ball Bearing suppliers and Wholesale 7304B Grease-Lubricated Sealed Angular Contact Ball Bearing factory. Founded in May 2000, is a wholly-owned enterprise, covering an area of 31682 square meters, with a plant area of 61000 square meters, and has 950 employees, including 110 research and development personnel. The production and sales volume of miniature deep groove ball bearings with inner diameter ranging from 3mm to 60mm ranks the first in China and the second in the world.

WTOO has successively won the national manufacturing single champion, the national high-tech enterprise, the post-doctoral workstation of Zhejiang Province, the enterprise technology center of Zhejiang Province, and the brand strategy demonstration enterprise of Zhejiang Province. WTOO pays attention to scientific and technological innovation, constantly introduces scientific and technological talents, cooperates with domestic bearing industry experts and scientific research institutions, and vigorously implements the technical innovation project. Through holding Shanghai Bearing Import & Export Co., Ltd. (which wholly owns Shanghai Excel Bearing Manufacturing Co., Ltd.), the company has completed its strategic layout in Shanghai by establishing a talent center, a technology R&D center and a sales center, thus forming a collectivized operation structure.

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Sealing Mechanisms in Angular Contact Ball Bearings
The sealing mechanisms employed in grease-lubricated sealed angular contact ball bearings are pivotal to their operational integrity. These mechanisms serve the dual purpose of containing the lubricating grease within the bearing while acting as an effective barrier against external contaminants. Two commonly utilized sealing technologies in these bearings are labyrinth seals and contact seals.
1.Labyrinth Seals: Labyrinth seals are renowned for their ability to create a tortuous path that obstructs the entry of contaminants. These seals consist of intricately designed channels that form a maze-like structure, effectively preventing dust, moisture, and debris from reaching the bearing surfaces. Labyrinth seals are particularly beneficial in applications where prolonged exposure to harsh environmental conditions is a concern, ensuring a reliable and durable sealing solution.
2.Contact Seals: Contact seals, also known as lip seals or rubber seals, rely on direct contact between the seal and the inner or outer ring of the bearing. Typically made from rubber or synthetic materials, these seals provide a secure barrier against contaminants while maintaining flexibility to accommodate various movements within the bearing. The tight seal created by contact seals not only prevents ingress but also retains the lubricating grease, contributing to the overall efficiency and longevity of the bearing.

Advantages of Grease Lubrication
Grease lubrication stands out as a preferred choice for angular contact ball bearings due to its numerous advantages, underscoring its importance in enhancing bearing performance.
1.Adherence and Consistency: One of the key benefits of grease lubrication is its semi-fluid nature, which enables it to adhere effectively to the bearing surfaces. This quality ensures continuous lubrication even in high-speed applications, reducing friction and minimizing wear. The consistency of grease also contributes to its longevity, offering sustained lubrication over an extended period.
2.Low Maintenance Requirements: Grease-lubricated sealed angular contact ball bearings demand less maintenance compared to their oil-lubricated counterparts. The sealed design, coupled with the viscous nature of grease, helps retain lubrication within the bearing, reducing the frequency of re-greasing. This low-maintenance requirement translates to cost savings and increased operational efficiency in various industrial applications.
3.Cost-Effective Solution: Grease lubrication provides a cost-effective solution for industries where minimizing downtime and maintenance costs is crucial. The ease of application, reduced need for complex lubrication systems, and the longevity of grease-lubricated bearings make them a financially prudent choice, contributing to overall operational efficiency.

Application Areas and Industries of Grease-lubricated sealed angular contact ball bearing
The versatility of grease-lubricated sealed angular contact ball bearings makes them indispensable across a broad spectrum of industries, each benefiting from their unique combination of load-bearing capabilities and effective sealing.
1.Automotive Industry: In the automotive sector, these bearings find applications in wheel hubs, transmissions, and differentials. The ability to handle both radial and axial loads, coupled with effective sealing, ensures optimal performance and longevity in the demanding and dynamic conditions of vehicular systems.
2.Manufacturing and Robotics: Industries reliant on precision machinery, such as manufacturing and robotics, benefit from the high-speed capabilities and load-bearing capacity of these bearings. Applications include electric motors, robotic arms, and spindles, where the combination of angular contact design and grease lubrication ensures smooth and efficient operation.
3.Pumps and Gearboxes: In pump and gearbox applications, where the challenges involve varying loads and speeds, grease-lubricated sealed angular contact ball bearings excel. Their ability to accommodate axial and radial forces makes them suitable for ensuring reliable performance and extending the service life of these critical components.