H719C-AC Ultra High Speed Bearing

Structural Features

1. Type
   It is a single - row angular contact ball bearing. This design allows the bearing to withstand both radial and axial loads in a certain direction. The single - row structure is relatively simple, which helps to reduce internal friction and energy loss, providing a basis for achieving ultra - high - speed operation.
2. Contact Angle
   The contact angle is 15° (the suffix C usually indicates a contact angle of 15°). Such a contact angle design can provide good axial load - carrying capacity and guiding performance during high - speed rotation, ensuring that the bearing can stably guide the movement of the shaft during operation and reducing vibration and deviation.
3. Materials
   • The bearing rings are generally made of high - quality bearing steel. This steel has high hardness, good wear resistance and fatigue resistance, and can withstand the huge pressure and friction generated during high - speed rotation, ensuring the service life of the bearing.
   • The rolling elements (balls) may be made of special materials, such as ceramic balls. Ceramic balls have the advantages of low density, high hardness and low thermal expansion coefficient. The low density can reduce centrifugal force and wear of the bearing during high - speed rotation; the high hardness can improve wear resistance; and the low thermal expansion coefficient enables the bearing to maintain stable dimensions and performance under large temperature changes.
4. Cage
   It adopts a cage design suitable for high - speed operation. Usually, lightweight and high - strength materials such as phenolic resin or special nylon are selected. The cages made of these materials have good self - lubricating performance and wear resistance. They can effectively maintain the spacing between the rolling elements during high - speed rotation, reduce collisions and friction between the rolling elements, reduce heat generation, and improve the stability and reliability of the bearing.
5. Sealing Design
   To prevent dust, moisture and other impurities from entering the bearing and affecting its performance and service life, the H719C - AC bearing may be equipped with a special sealing device. The sealing design can effectively retain the grease inside the bearing, reduce grease leakage, and block the intrusion of external pollutants, ensuring that the bearing can operate normally in a harsh working environment.

Performance Advantages

1. Ultra - High - Speed Performance
   This bearing is designed specifically for ultra - high - speed applications. With its advanced structure and materials, it can achieve extremely high rotational speeds. For example, in some high - speed spindle systems, it can reach tens of thousands of revolutions per minute or even higher, meeting the requirements of modern industry for high - speed processing and high - precision production.
2. High Precision
   Thanks to the high - precision manufacturing process and strict quality control, the H719C - AC bearing has extremely high rotational accuracy. Its tolerance class can usually reach a high standard, such as class P4 or even higher, ensuring the position accuracy and motion accuracy of the shaft during rotation, thereby improving the processing accuracy and product quality of the entire equipment.
3. Low Heat Generation
   During high - speed rotation, friction inside the bearing generates heat. The H719C - AC bearing effectively reduces frictional heat generation through an optimized structural design, the selection of materials with a low friction coefficient, and a good lubrication method. Low heat generation not only reduces energy loss and improves energy utilization efficiency but also avoids problems such as performance degradation of the bearing material and failure of the grease due to overheating, extending the service life of the bearing.
4. Long Service Life
   High - quality materials and advanced manufacturing processes ensure the fatigue resistance and wear resistance of the bearing. Under normal use and maintenance conditions, the H719C - AC bearing can maintain good performance for a long time, reducing the maintenance and replacement costs of the equipment and improving the reliability and operating efficiency of the equipment.