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7000A DTA-Angular contact ball bearings for precision machinery

  • 7000A DTA-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 7000A DTA Angular Contact Ceramic Ball Bearing suppliers and Wholesale 7000A DTA Angular Contact Ceramic 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. In October 2010, it acquired and held two bearing companies in Shanghai, established talent centers, technology research and development centers, and sales centers, and formed a group business model.

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1. What are the material selection and advantages of angular contact ceramic ball bearings?
In angular contact ceramic ball bearings, commonly used materials include silicon nitride (Si3N4) ceramics and stainless steel. Compared with traditional steel materials such as GCr15, ceramic materials have extremely high hardness, wear resistance and corrosion resistance. Si3N4 ceramic ball bearings can also be used where wear resistance and insulation are required due to their non-conductive properties.
For example, for high-speed machine tool spindles, traditional steel bearings are susceptible to heat and friction in high-speed rotation and high-temperature environments, while ceramic bearings can better resist high temperatures and reduce friction, thereby extending bearing life.
In addition, ceramic materials are lighter in weight than metal materials, which is also an advantage in certain application scenarios, such as high-performance automotive parts that need to reduce weight.

2. In what application environment does the 7000A DTA model bearing have the best performance?
7000A DTA model angular contact ceramic ball bearings are designed for use in equipment requiring high-speed operation and precise transmission. They excel in areas such as machine tool spindles, high-frequency motors, gas turbines and centrifugal separators.
In the application of machine tool spindles, these bearings can withstand high-speed rotation and maintain high precision, ensuring the accuracy of processing. In high-frequency motors, the low friction characteristics and high-speed capabilities of the 7000A DTA model bearings improve the motor's efficiency and response speed. In the field of gas turbines, these bearings can cope with high temperature and high-speed environments, ensuring the reliability and stability of the turbine.
In addition, in centrifugal separators, these bearings can reduce friction loss and vibration during high-speed rotation, ensuring efficient operation of the separator. Therefore, the 7000A DTA model bearings perform well in these application environments, improving the performance and reliability of the equipment.

3. What is the difference between the P4 and P5 accuracy grades of angular contact ceramic ball bearings? How to choose the appropriate accuracy level for different application scenarios?
P4 and P5 accuracy classes represent different bearing accuracy and precision in angular contact ceramic ball bearings. The P4 accuracy level is higher than P5, with smaller errors and higher accuracy. In situations where higher speeds and higher precision are required, choosing P4 grade bearings can better meet the requirements.
For example, in machine tool spindles that require high-precision processing, P4 precision grade bearings are usually selected to ensure the accuracy and precision of machine tool processing. For some less demanding applications, such as general low-speed rotating equipment, P5 precision grade bearings can also meet the needs.
When selecting the appropriate accuracy grade, the operational requirements of the equipment and the required level of precision and accuracy need to be considered to ensure that the bearing can optimally adapt to the specific application scenario, thereby improving the performance and efficiency of the equipment.