Deep Groove High Precision Ball Bearing 6305 ZZ Low Noise Ball Bearing 25x62x17

6305-ZZ Deep Groove Ball Bearing: Low Noise, High Speed & Long Lifespan

I. Product Overview​

The 6305-ZZ deep groove ball bearing is a widely used basic component in the field of mechanical transmission. With its mature structural design and excellent comprehensive performance, it provides strong support for the stable operation of various mechanical equipment. It can bear both radial loads and a certain amount of axial loads, and performs excellently in working conditions that require operational accuracy and stability. Its applications cover multiple industries such as motors, water pumps, machine tools, household appliances, and engineering machinery, and it is an important component to ensure the efficient operation of key equipment parts and the precise transmission of power.​

II. Structural Design​

1. Precise Cooperation between Balls and Raceways: The 6305-ZZ deep groove ball bearing uses high-precision steel balls as rolling elements inside. After precision grinding, the steel balls have a smooth surface and high dimensional accuracy, and can roll smoothly in the deep groove raceways of the inner and outer rings. The depth and radian of the raceways are optimally designed, so that the contact area between the steel balls and the raceways is reasonable, which can not only effectively disperse the load but also reduce friction loss, ensuring that the noise and vibration of the bearing are at a low level during operation. When the equipment is subjected to radial or axial forces, the steel balls flexibly adjust their positions in the raceways and evenly transmit the force to the inner and outer rings through multi-point contact, ensuring the stable operation of the bearing as a whole.​
2. Sealing Structure Design: The "ZZ" in the model indicates that the bearing adopts a double-sided metal dust cover sealing structure. The dust cover is made of high-quality thin metal sheets by stamping, and is tightly installed on both sides of the bearing after fine processing. It can effectively block foreign objects such as dust and impurities from entering the inside of the bearing, avoiding wear and pollution of the steel balls and raceways, and significantly extending the service life of the bearing. At the same time, the inside of the bearing is pre-filled with an appropriate amount of high-performance grease, which, under the protection of the dust cover, can continuously provide lubrication for the steel balls and raceways, reducing equipment maintenance costs and workload.​

III. Dimensional Specifications​

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IV. Performance Advantages​

1. Excellent Bearing Capacity: Although mainly used to bear radial loads, the 6305-ZZ deep groove ball bearing, with its reasonable structure and high-quality materials, performs prominently in radial load-bearing and can also bear a certain amount of axial load. For example, in motor rotor support, it can stably bear the radial electromagnetic force generated by motor operation and the axial force caused by the rotor weight, ensuring the stable and high-speed rotation of the rotor and guaranteeing the efficient and reliable operation of the motor.​
2. Low Friction and High-Speed Performance: Deep groove ball bearings themselves have a small friction coefficient. The 6305-ZZ model further reduces the friction coefficient through high-precision processing and special heat treatment of the steel balls and raceways, so that the bearing generates less heat and has low energy consumption during operation, and can adapt to higher speed requirements. In equipment such as high-speed fans, the bearing can operate stably to achieve efficient gas transmission, and its low friction characteristic helps reduce energy consumption and improve equipment energy efficiency.​
3. Excellent Operational Stability: The precision manufacturing process ensures the fitting accuracy of various parts of the bearing. The rolling trajectory of the steel balls in the raceways is stable, which effectively reduces vibration and noise. The sealing structure of the double-sided dust cover not only blocks the entry of foreign objects but also enhances the structural rigidity of the bearing, further improving operational stability. In the motors of household appliances, its stable operational performance can reduce noise, providing users with a quiet use environment.​

V. Application Fields​

1. Motor Industry: Widely used in various motors, such as asynchronous motors and synchronous motors. As a supporting component for motor rotors, it can ensure the stability of the rotor during high-speed rotation, reduce vibration and noise, improve the operating efficiency and reliability of the motor, extend the service life of the motor, and is suitable for large industrial motors and small household appliance motors.​
2. Water Pump Field: It plays a key role in the impeller shaft support part of water pumps. It can bear the radial force generated by the rotation of the impeller and the axial force caused by water flow pressure, ensuring the stable rotation of the impeller and realizing efficient pumping operations, suitable for agricultural irrigation water pumps and industrial production water pumps.​
3. Machine Tool Industry: Suitable for auxiliary transmission components of machine tools, such as lead screw supports and worktable transmissions. It can meet their requirements for accuracy and stability, reduce vibration and deviation during transmission, ensure the relative position accuracy between the tool and the workpiece during processing, and improve the processing quality of parts.​
4. Household Appliances Field: Widely used in the motors of household appliances such as washing machines and fans. With the advantages of low noise, long service life, and maintenance-free, it ensures that the appliances operate quietly and stably, improves user experience, and reduces the probability of maintenance and after-sales costs.