604ZZ Small Precision Bearing Deep Groove 4x12x4 Bearing Low Noise

604ZZ Deep Groove Ball Bearing: Mini-Size, High-Speed, Low Noise & Reliable

I. Product Overview

The 604ZZ deep groove ball bearing is a small precision bearing. With its compact size and reliable performance, it occupies an important position in micro mechanical transmission systems. It can operate efficiently in limited space while meeting the requirements of equipment for precision and stability, making it an ideal choice for core components of many small devices. It has a wide range of applications, covering fields such as micro motors, precision instruments, small electronic devices, and medical equipment, providing strong support for the stable operation of equipment.

II. Structural Design

1. Rolling Elements and Raceways: High-precision steel balls are used as rolling elements inside the bearing. These steel balls undergo precision grinding, with a smooth surface and extremely high dimensional accuracy, enabling them to perfectly match the deep groove raceways of the inner and outer rings. The radian and depth of the raceways are carefully designed to ensure uniform contact when the steel balls roll, which can effectively disperse radial and certain axial loads. When the equipment is under force during operation, the steel balls roll flexibly in the raceways and transmit the force smoothly through multi-point contact, reducing local wear and ensuring the stability and low noise of the bearing operation.

2. Sealing Structure: The "ZZ" in the model indicates that the bearing is equipped with a double-sided metal dust cover sealing structure. The dust covers are made of high-quality thin metal sheets by stamping and are tightly installed on both sides of the bearing, which can effectively block dust, impurities, water vapor, and other foreign objects from entering the bearing, avoiding contamination and wear of the steel balls and raceways. At the same time, the inside of the bearing is pre-filled with high-performance grease, which can maintain the lubrication effect for a long time under the protection of the dust covers, extending the service life of the bearing and reducing maintenance costs.

III. Performance Characteristics

1. High-Speed Adaptability: The 604ZZ deep groove ball bearing has a small friction coefficient. Thanks to precision manufacturing processes and high-quality materials, it can operate stably under high-speed working conditions. In equipment such as micro high-speed motors, it can easily cope with the high-speed rotation of the rotor to achieve efficient power transmission, and generates little heat during operation, reducing the risk of failure caused by overheating.

2. Stable Bearing Capacity: Although small in size, the bearing has good radial bearing capacity with reasonable structural design and high-strength materials, and can also bear a certain degree of bidirectional axial load. In small transmission mechanisms, it can not only stably support the rotation of the shaft to cope with radial forces but also resist axial forces generated by equipment operation, ensuring the continuous and stable operation of the equipment.

3. Low Noise and Low Vibration: The precision processing technology ensures the matching accuracy of various parts of the bearing, and the rolling trajectory of the steel balls in the raceways is stable and orderly, which greatly reduces vibration and noise. In precision instruments with strict requirements on the operating environment, such as micro measuring instruments, it can ensure quiet operation of the equipment without interfering with measurement accuracy, ensuring the accurate work of the equipment.

IV. Application Fields

1. Micro Motor Field: Widely used in various micro motors, such as toy motors, small fan motors, and precision instrument drive motors. As a supporting component of the motor rotor, 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, and extend the service life of the motor.

2. Precision Instrument Industry: Plays an important role in precision equipment such as micro measuring instruments, electron microscopes, and small sensors. Its characteristics of high precision and low noise meet the strict requirements of precision instruments for component precision and stability, ensuring the accuracy of instrument measurement data and the stability of operation.

3. Small Electronic Devices: Commonly used in transmission components of small electronic devices, such as the paper feeding mechanism of portable printers and the lens adjustment device of small projectors. Its compact structure and stable performance can adapt to the design requirements of miniaturization and lightweight of equipment, ensuring the normal operation of the equipment.

4. Medical Device Field: In small medical devices, such as micro infusion pumps and portable physiotherapy instruments, the bearing can meet the requirements of the equipment for operation stability and low noise, ensuring the safe and reliable use of medical devices and improving the user experience of patients.

V. Dimensions and Specification Parameters

VI. Maintenance Points

1. Lubrication Management: The bearing is pre-filled with an appropriate amount of high-performance grease at the factory, and no frequent addition is required in normal working environments. However, in harsh working conditions such as high temperature, high humidity, or heavy dust, it is necessary to regularly check the state of the grease. If it is found to be dry, discolored, or mixed with impurities, the suitable grease should be replaced in time, and the filling amount should be moderate to ensure a good lubrication effect.

2. Regular Inspection: Regularly conduct a visual inspection of the bearing to check whether the dust covers are intact and whether there are any damages, deformations, or looseness. Use professional instruments to monitor the vibration and temperature of the bearing during operation. If the vibration increases abnormally or the temperature exceeds the normal range (usually, the normal working temperature is 10-20℃ higher than the ambient temperature), it is necessary to stop the machine immediately for inspection, investigate the cause of the fault, and repair or replace it in time to prevent the fault from expanding.

3. Installation Notes: Ensure a clean environment during installation to avoid foreign objects entering the inside of the bearing. Use appropriate installation tools and operate in accordance with the correct installation method to ensure that the matching accuracy between the bearing and the shaft and bearing seat meets the requirements. Avoid impact damage to the bearing during installation to ensure its normal operation and performance.