High Load Ball Bearings 32x42x7 Low Friction Ball Bearing 6806ZZ

6806ZZ Deep Groove Ball Bearing: Compact, High-Load & Low Noise

I. Product Overview

As a member of the deep groove ball bearing family, the 6806ZZ deep groove ball bearing plays a key role in many mechanical transmission systems with its unique design and reliable performance. Its compact size design, especially the specification of inner diameter 30mm, outer diameter 42mm, and thickness 7mm, enables it to be adapted to a variety of equipment with strict space requirements. With excellent stability and precision, it is widely used in industrial automation, precision instruments, small motors and other fields, providing a solid guarantee for the efficient and stable operation of various mechanical equipment.

II. Structural Design

1. Rolling Elements and Raceways: High-precision Grade 10 steel balls are used as rolling elements inside. These steel balls undergo multiple precision grinding processes, with extremely high surface smoothness and dimensional accuracy controlled within a very small tolerance range. They perfectly fit with the deep groove raceways of the inner and outer rings. The radian and depth of the raceways are precisely constructed based on strict mechanical calculations. During the operation of the equipment, when subjected to radial or axial loads, the steel balls can roll flexibly in the raceways, evenly disperse the load through multi-point contact, effectively reduce local stress, minimize wear, and ensure the stability and low-noise characteristics 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 through precision stamping and are tightly installed on both sides of the bearing, forming a solid protective barrier. This design can effectively block the intrusion of foreign objects such as dust, impurities, and water vapor into the bearing, avoid contamination and wear of the steel balls and raceways, and at the same time protect the pre-filled high-performance grease inside, preventing its loss and deterioration, thereby extending the lubrication cycle and service life of the bearing and reducing the maintenance cost of the equipment.

III. Performance Characteristics

1. High-Speed Performance: The 6806ZZ deep groove ball bearing has an extremely low friction coefficient, which benefits from its precision manufacturing process and the selection of high-quality materials. Under high-speed working conditions, it can maintain stable operation. For example, in small high-speed motors, it can easily adapt to the high-speed rotation of the motor rotor to achieve efficient power transmission. Moreover, it generates little heat during operation, effectively reducing the risk of equipment failure caused by overheating.

2. Reliable Bearing Capacity: Although its external size is relatively small, through reasonable structural design and the application of high-strength materials, the bearing performs excellently in bearing radial loads and can also bear a certain degree of bidirectional axial loads. 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 during equipment operation, ensuring the continuous and stable operation of the equipment.

3. Low Noise and Low Vibration: The precision processing technology ensures the high-precision fit between various parts of the bearing, making the rolling trajectory of the steel balls in the raceways stable and orderly. This high-precision operating characteristic greatly reduces vibration and noise. In precision instruments with strict requirements on the operating environment, such as electronic measuring instruments, the bearing can ensure quiet operation of the equipment without interfering with measurement accuracy, providing a strong guarantee for the accurate work of the equipment.

IV. Application Fields

1. Industrial Automation Equipment: Widely used in various small transmission devices of automated production lines, such as the ball screw support of precision positioning platforms and the drive shaft support of small conveyor chains. Its stable performance and high-precision operation can ensure the positioning accuracy and operation stability of automated equipment, improving production efficiency and product quality.

2. Precision Instrument Industry: Commonly found in equipment such as electron microscopes, precision optical instruments, and micro measuring instruments. With its characteristics of high precision, low noise, and low vibration, it meets the strict requirements of precision instruments for component precision and stability, ensuring that the instruments can accurately measure and analyze data, providing reliable support for scientific research, testing and other work.

3. Small Motor Field: It is an ideal supporting component for the rotors of small motors (such as small fan motors, precision instrument drive motors, medical device motors, etc.). It can ensure the stability of the motor 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 adapt to the trend of miniaturization and lightweight of motors.

4. Other Fields: It is also applied to some small equipment with high requirements on space and performance, such as the transmission components of portable electric tools and the rotating parts of small fitness equipment. In these devices, the compact structure and reliable performance of the 6806ZZ deep groove ball bearing can effectively improve the overall performance and user experience of the equipment.

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 the grease 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 maintain 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 vibration and temperature monitoring instruments to real-time 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: When installing the bearing, it is necessary to ensure a clean installation environment to avoid foreign objects entering the inside of the bearing. Use appropriate installation tools and operate in strict 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 that it can operate normally and give full play to its performance.