What is RB cross roller bearing

Crossed roller bearings are a type of high-precision, high-rigidity bearing widely used in industrial robot joints and other rotating parts.Among them, RB crossed roller bearings are the most common type.This type of bearing consists mainly of inner and outer rings, rollers, and a cage.The inner and outer rings are the main parts of the bearing, and the rollers roll between them. The role of the cage is to fix the rollers and maintain the accuracy of the bearing.Compared to other types of bearings, RB crossed roller bearings have higher precision and greater rigidity, and can withstand higher loads and higher rotational speeds.

Characteristics of RB cross roller bearings

High precision: The inner and outer rings and rollers of RB cross-roller bearings are arranged in a cross configuration, which provides high precision and meets the requirements of high-precision machines and equipment.This configuration enables the bearings to have better stability when subjected to load, thereby improving rotational accuracy.

High rigidity: The rollers and cages of RB cross-roller bearings are designed in a monolithic manner, allowing them to withstand higher loads and higher rotational speeds, resulting in high rigidity.This design enables the bearings to remain stable at high speeds, improving the performance and accuracy of the machine.

Low friction: The use of low friction materials between the rollers and the cage of the RB cross roller bearing reduces friction and wear, improving the service life of the bearing.This material also has good corrosion resistance and can be used in various environments.

High stability: The simple structure of RB cross-roller bearings provides high stability, ensuring long-term stable operation of machinery and equipment.This structure also makes the bearings easy to maintain and replace, reducing the cost of use.

High load capacity: RB cross-roller bearings have high load capacity, capable of withstanding greater loads and higher rotational speeds, making them suitable for various high-load machines and equipment.This load capacity enables the bearings to meet a variety of demanding application scenarios.

High rotational speed: RB cross roller bearings have high rotational speeds, which can meet the requirements of high-speed rotating machines and equipment.This rotational speed also makes the bearings irreplaceable in certain specific fields.

Application of RB Crossed Roller Bearings

RB cross roller bearings are widely used in industrial robots, mainly in the joint parts and other rotating parts of industrial robots, such as manipulators, machine tools, printing machines, textile machines, etc. In addition, RB cross-roller bearings are also widely used in aerospace, medical equipment, food processing, and other fields.In the field of industrial robots, the use of RB cross-roller bearings can improve the motion accuracy and stability of the robot, thereby enhancing the performance and reliability of the robot.In other fields, the use of RB cross-roller bearings can also improve the efficiency and accuracy of equipment, thereby enhancing production efficiency and product quality.

In short, as a high-precision and high-rigidity bearing, RB cross roller bearings have many advantages and wide application characteristics, providing a strong guarantee for the performance and accuracy of robots.

The difference between RA and RB crossed roller bearings

1. Different structure: the rollers of RA cross roller bearings are arranged in a cross pattern, while the rollers of RB cross roller bearings are arranged in a straight pattern.In addition, the inner and outer rings of RA cross roller bearings do not have fixed ribs, while the inner and outer rings of RB cross roller bearings have fixed ribs.

2. Different performance: Ra cross roller bearings have high rigidity and high precision, and are suitable for high-speed rotating applications such as CNC machine tools, industrial robots, and aerospace.RB cross roller bearings are suitable for heavy-duty applications and have high load capacity and stability.

3. Different application fields: RA cross-roller bearings are widely used in precision machine tools, aerospace and other fields, and are even known as the "spine of machine tools".RB cross-roller bearings are mostly used in heavy industrial fields, such as cranes.

4. Different prices: Generally speaking, the price of RA cross-roller bearings is higher than that of RB cross-roller bearings, as their production process is more complex and the accuracy requirements are higher.

5. Different installation methods: The RA series has no inner ring ribs and is sealed with a single-sided gap, which effectively prevents dust from entering the interior and is easy to install.The RB series has inner and outer ring ribs and is sealed with a double-sided gap, which prevents dust from entering the interior and is more complex to install.

6. Different use environments: The RA series can withstand radial loads and axial loads in any direction;the RB series can only withstand radial loads.Therefore, the RA series can withstand higher axial forces, while the RB series cannot.

7. Different rigidities: The RA series has a higher rigidity than the RB series because the inner and outer rings and rolling elements of the RA series are made of high-rigidity materials, making it much more rigid than the RB series.Therefore, the RA series is suitable for high-precision, high-speed machine tool spindles and various precision instruments;the RB series is suitable for general machine tool spindles and various industrial applications.

8. Different accuracy levels: The accuracy level of the RA series is higher than that of the RB series, as the RA series has undergone ultra-precision grinding and strengthening treatment, making its accuracy level much higher than that of the RB series.Therefore, the RA series is suitable for high-precision, high-speed machine tool spindles and various precision instruments;the RB series is suitable for general machine tool spindles and various industrial fields.

RB cross roller bearings are also a very common type of bearing. They are similar to RA cross roller bearings, but there are some structural differences.The rollers in RB cross roller bearings are arranged in a straight line, which increases the bearing's load capacity and is suitable for heavy-duty applications.

RA crossed roller bearing

RA cross roller bearings are a very popular type of bearing, featuring high stiffness and high precision.This type of bearing is suitable for high-speed rotating applications such as CNC machine tools, industrial robots, and aerospace.

The structural feature of RA cross roller bearings is that their rollers are arranged in a cross pattern, which reduces the sliding and wobbling of the rollers and improves the rotational accuracy and rigidity of the bearings.In addition, the raceways and rollers of RA cross roller bearings are precision machined and lapped, ensuring high accuracy and long life of the bearings.

RB Crossed roller bearing supplier

LZTC RB Crossed roller bearing, providing a series of services such as research and development, design, production, and sales of Crossed roller bearing products.

If you are looking for Crossed roller bearing supplier, please contact us for the latest quotation.