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Miniature ball bearings are small bearings with balls as the rolling element. They can be made from steel, stainless steel, brass, phosphor bronze, and aluminum. Many manufacturers have standard ball sizes, but can also customize sizes to meet specific customer needs. These balls can also be demagnetized or polished.

Miniature ball bearings are a popular choice for light-duty instrumentation. They are available in sealed, shielded, and open configurations. BL is one of the companies that excels at custom miniature bearings. It offers ball bearings made from AISI 440C stainless steel and 52100 steel. It also offers customized bearings with bores as small as a millimeter. Check out its free online catalog for more information.

Miniature ball bearings require proper lubrication for optimal performance and longevity. A variety of specialty and common lubricants are available. These lubricants provide a sealing barrier against contamination and lubricate sliding contacts between bearing components. Some specialty lubricants also have Custom Miniature Bearing  properties that carry away heat, which is important for the operation of a miniature ball bearing.

BDS can source the bearings you need from a global supplier. With expert services, BDS can source a bearing to match your specifications. In addition, it can assist you with any questions you might have about your custom bearing order. This way, you won't have to worry about the quality of your bearings.

Bearings can be divided into two main categories: linear and rotary. Each classification is based on the motion they're designed for. Linear miniature bearings are designed for pushing and pulling motions, while rotary bearings move in a radial direction. Rotary bearings are used in bicycles and other machines where they need to move in a circular motion.

Stainless steel is one of the most popular materials for ball bearings. This material has low noise and high load capacity. However, miniature/instrument bearings are usually not used in high-load applications. Stainless steel is a popular choice because it offers a high strength to wear ratio, which is important for efficient operation.

ABEC 1 miniature and instrument bearings are manufactured to meet ABMA Standard 20 tolerances. These bearings are made to withstand high torque while providing precision performance. They also have radial and axial play. This information should be taken into account during the initial design phase. They are a standard in the industry.

The accuracy of the guidance refers to the accurate level of the movement of the moving components along the Ina linear guide guide surface movement of its trajectory. The main factors affecting the guiding accuracy are the geometric accuracy of the guide bearing surface, the type of structure of the guide, the accuracy of the contact of the guide vice, the appearance roughness, the guide and the stiffness of the support, to the thickness of the oil film of your woman and the stiffness of the oil film.

Linear guide in the application of the assessment of the 6 elements.
 
1, the accuracy of the guide and the guide and the thermal deformation of the support, etc.
 
The accuracy of the guidance refers to the movement of the moving parts along the Ina linear guide guide surface movement when the accurate level of its trajectory. The main factors affecting the guiding accuracy are the geometric accuracy of the guide bearing surface, the structure type of Miniature Bearing  the guide, the accuracy of the contact of the guide, the roughness of the appearance, the guide and the stiffness of the support, the thickness of the oil film to your woman and the stiffness of the oil film.
 
The geometric accuracy of the linear motion guide generally includes: straightness in the vertical plane and horizontal plane; parallelism between the two guide surfaces. Guide geometric accuracy can be expressed in terms of the error on the full length of the guide or the error on the unit length.
 
2、Accuracy persistence
 
In addition, accuracy persistence is the ability to guide the rail work process to maintain the original geometric accuracy. The accuracy of the guide rail adherence mainly depends on the wear resistance dimensional stability of the guide rail. Wear resistance and the guide vice material matching, force, processing accuracy, lubrication and protection device performance factors. The residual stress in the guide and its support parts will also affect the accuracy of the guide to adhere to.

3, motion sensitivity and positioning accuracy
 
Motion sensitivity refers to the movement components can achieve a smaller stroke; positioning accuracy refers to the ability of the movement components to stop in the specified position as required. Motion sensitivity and positioning accuracy are related to the type of guide, friction characteristics, movement speed, transmission stiffness, quality of moving parts, etc.

4、Smoothness of movement

Linear guide motion smoothness refers to Ina linear guide in low-speed movement or micro movement without crawling phenomenon performance. Smoothness and the structure of the guide, guide vice material matching, lubrication, lubricant properties and guide movement of the transmission system stiffness and other factors.

5, vibration resistance and stability

And stability refers to the performance of self-excited vibration does not occur under the given operating conditions. Vibration resistance is the ability to guide the rail vice to accept forced vibration and impact.

6、Stiffness

This is particularly important for fine machinery and instruments. Guide deformation including guide body deformation guide vice contact deformation, guide resistance to force deformation ability. Deformation will affect the relative position between the components and guidance accuracy. Both should be considered.

Ceramic bearings can be used in various harsh working conditions such as high speed, high temperature, low temperature, strong corrosion, strong magnetic field, vacuum, and high pressure. In order to facilitate the correct selection and use of ceramic bearings, the main characteristics of ceramic bearings are introduced as follows:

1) The hardness of ceramic materials with high bearing capacity can Dongsheng Bearing be up to 2 times that of bearing steel, and the elastic modulus is 1.5 times that of bearing steel. Therefore, the bearing capacity of ceramic bearings is also much higher than that of bearing steel bearings.

2) Good heat resistance The strength of the ceramic material decreases very little at high temperature, and it still maintains high strength and mechanical properties even at 800 degrees Celsius. At the same time, the expansion rate of the ceramic material is only 22% of that of the bearing steel, so the high temperature dimensional stability is good. .

3) The working speed of the ceramic ball bearing with high limit speed can reach more than 1.3 times the limit speed of the bearing steel bearing of the same type.

4) The temperature rise of ceramic ball bearing with small friction temperature rise when running at a speed of 18000r/min is about 60% of the temperature rise of bearing steel bearing under the same conditions.

5) Small friction loss For bearings of the same type, the mass of ceramic material is smaller than that of steel, the centrifugal force and gyroscopic moment of the rolling element during operation are small, and the spin sliding is small, so the friction loss is significantly lower than that of bearing steel bearings.

6) High durability Ceramic materials have high hardness and excellent wear resistance. The working life of ceramic ball bearings is generally more than 2 times that of ordinary bearing steel bearings.

7) Good corrosion resistance Ceramic materials can resist the corrosion of various inorganic acids, organic acids, salts, alkalis and molten metals such as hydrochloric acid, sulfuric acid, nitric acid, and caustic soda, but in hydrogen fluoride and molten iron, their corrosion resistance is poor. Be careful when using it.

8) Good insulation, low magnetic permeability is almost an insulator, magnetic permeability is far less than 0.1H, suitable for any non-magnetic parts.

9) Self-lubricating ceramic bearings can achieve self-lubricating. At present, the most widely used bearing material is silicon nitride.3

According to the latest fatigue life theory of rolling bearings, a bearing of excellent design, excellent material, well-made and correctly installed. The material of this bearing will never fatigue damage as long as it is loaded lightly enough (not greater than a certain permanent limit load value corresponding to the bearing). Therefore, as long as the working environment temperature of the bearing is suitable and the change is not large, there is absolutely no solid dust, harmful gas and moisture intrusion into the bearing, the lubrication of the bearing is sufficient and just right, the lubricant is absolutely pure without impurities, and will not deteriorate;

Then the bearing will run indefinitely. The significance of this theory is not only that it provides a more reliable tool for predicting the life of mode bearings than the ISO life Ball Bearing equation, but also that it shows that the fatigue life of all rolling bearings has considerable development potential, and shows that the development of this potential Therefore, it has a profound impact on the development, quality management and application technology of bearing products. However, the infinity of bearings is only possible under laboratory conditions; and such conditions are difficult to achieve and too expensive for bearings used in the field under certain working conditions.

When bearings are used in the field, their working load is often greater than their corresponding fatigue endurance limit load. After a certain period of work, sooner or later, the material itself will reach the electrical fatigue limit, resulting in fatigue spalling and can not continue to be used. Even if the working load of some bearings is lower than their corresponding permanent limit load, wear failure will occur due to the problem of bearing contamination that is difficult to eradicate. In short, the bearings used in the field are more or less always unable to fully meet the conditions that the above-mentioned laboratories have, and a slight deficiency in any one of the conditions will shorten the service life of the bearing, which will cause the bearing life problem.

Generally speaking, the life of a rolling bearing refers to the long service period in which the rolling bearing can continuously maintain the working performance and working accuracy that meet the active requirements under the actual service conditions (including working conditions, environmental conditions and maintenance and maintenance conditions, etc.).