Product Description

Precision Cross Roller Bearing, the inner structure of which adopts the vertical and cross arrangement of cylindrical rollers with 90°, can bear radial load, double-direction thrust loads and overturning moment at the same time. Combined with its high rigidity, it can be applied to the joints and rotating parts of industrial robots, rotary tables of machining centers, rotating parts of manipulators, precision rotary tables, medical equipments, measuring instruments, IC manufacturing machines, etc.

Precision Cross Roller Bearing has 3 structure types, including bearing   with cage, with separator, and with full complement. Cage and separator types are suitable to low friction moment and high-speed rotation, while full complement is suitable to low-speed rotation and heavy load.
Precision Cross Roller Bearing has the following 7 structure series:

 RB Series
 RE Series
 RU Series
 RA Series
 RA-C Series
 CRB Series
 CRBH Series

 

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Rolling Body: Roller Bearings
The Number of Rows: Single
Outer Dimension: Small and Medium-Sized (60-115mm)
Material: Bearing Steel
Spherical: Non-Aligning Bearings
Load Direction: Axial Bearing
Customization:
Available

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Customized Request

cross roller bearing

How do different types of cross roller bearings, such as single and double split, differ in terms of design and functionality?

Various types of cross roller bearings, including single split and double split designs, exhibit differences in their design and functionality. These variations affect factors such as load capacity, rigidity, ease of installation, and axial displacement capability. Here's a detailed explanation of the differences between single split and double split cross roller bearings:

  • Single Split Cross Roller Bearings:
  • Single split cross roller bearings consist of two separate parts - an inner ring and an outer ring. The inner ring is designed with a single split, allowing the bearing to be easily assembled and disassembled around the equipment shaft or housing. This design simplifies the installation process and reduces the need for complex adjustments. Single split cross roller bearings typically have a higher load capacity compared to double split designs, making them suitable for applications that require greater radial and axial load handling.

  • Double Split Cross Roller Bearings:
  • Double split cross roller bearings consist of three separate parts - an inner ring and two outer rings. Both the inner and outer rings have double splits, allowing the bearing to be easily separated into individual components. The double split design provides enhanced rigidity and axial displacement capability compared to single split bearings. Double split cross roller bearings can accommodate higher axial loads and have improved resistance to moment loads, making them suitable for applications that require increased rigidity and load-carrying capacity.

In terms of functionality, both single split and double split cross roller bearings offer advantages in different scenarios. Single split bearings are often preferred in applications where ease of installation, disassembly, and maintenance are critical factors. They are commonly used in machine tools, industrial robots, and other equipment that requires frequent assembly or adjustment. Single split bearings provide flexibility and convenience during installation and servicing processes.

On the other hand, double split cross roller bearings excel in applications that demand higher rigidity, increased load capacity, and improved resistance to moment loads. The double split design enhances the bearing's ability to handle axial loads and maintain stability under challenging operating conditions. Double split bearings are commonly used in precision machinery, robotics, aerospace systems, and other applications where high rigidity and load-carrying capacity are essential.

In summary, the main differences between single split and double split cross roller bearings lie in their design and functionality. Single split bearings feature a simpler two-part design, allowing for easy assembly and disassembly. They offer higher load capacity but may have limitations in terms of rigidity and axial displacement capability. Double split bearings, with their three-part design, provide enhanced rigidity, improved axial load handling, and increased resistance to moment loads. The choice between single split and double split cross roller bearings depends on the specific requirements of the application, balancing factors such as load capacity, rigidity, ease of installation, and axial displacement capability.

cross roller bearing

What considerations are important when selecting the appropriate size and material for a cross roller bearing?

When selecting the appropriate size and material for a cross roller bearing, several considerations are crucial to ensure optimal performance and longevity. The following factors should be taken into account:

  • Load Requirements:
  • Determine the expected load that the bearing will need to support. Consider both the magnitude and direction of the load, including radial, axial, and moment loads. Cross roller bearings are known for their high load capacity in all directions, but it is important to select a size and material that can handle the specific load requirements of the application.

  • Space Limitations:
  • Consider the available space for the bearing within the application. Cross roller bearings have a compact design, but it is essential to choose a size that fits within the allotted space while allowing for proper clearance and mounting considerations. Take into account the dimensions of the bearing, including inner and outer diameters, width, and overall profile.

  • Rotational Speed:
  • Determine the rotational speed at which the bearing will operate. Different materials and designs have specific limitations on rotational speed due to factors such as heat generation, lubrication requirements, and the potential for dynamic effects like centrifugal forces. Select a bearing size and material that can safely accommodate the anticipated rotational speed without compromising performance or causing premature wear.

  • Accuracy and Precision:
  • Consider the required level of accuracy and precision for the application. Cross roller bearings are known for their excellent positioning accuracy and low friction characteristics. However, different designs and materials may offer varying levels of precision. Determine the specific tolerance and precision requirements of the application and select a bearing that can meet those criteria.

  • Environmental Conditions:
  • Evaluate the environmental conditions in which the bearing will operate. Factors such as temperature, humidity, exposure to chemicals or corrosive substances, and the presence of contaminants can influence the choice of bearing material. Select a material that can withstand the specific environmental conditions of the application to ensure optimal performance and longevity.

  • Maintenance and Service Life:
  • Consider the desired maintenance requirements and service life expectations. Some bearing materials may require more frequent lubrication or maintenance than others. Additionally, different materials and designs have varying levels of durability and service life. Assess the maintenance capabilities and resources available and select a bearing that aligns with the desired maintenance schedule and service life requirements.

  • Budget and Cost:
  • Take into account the budget and cost considerations. Different bearing sizes and materials may have varying price points. Balance the desired performance and longevity with the available budget to select a bearing that offers the best value for the specific application.

By carefully considering these factors, it is possible to select the appropriate size and material for a cross roller bearing that meets the specific requirements of the application. Choosing the right bearing will help optimize performance, ensure reliability, and extend the service life of the bearing in the given application.

cross roller bearing

What are cross roller bearings and how are they used in various industrial applications?

Cross roller bearings are specialized types of roller bearings that utilize cylindrical rollers arranged in a cross configuration between inner and outer rings. This unique design allows for high radial, axial, and moment load capacities while maintaining a compact and space-saving profile. Cross roller bearings are commonly used in various industrial applications where precision, rigidity, and load-carrying capacity are critical. Here's a detailed explanation of cross roller bearings and their uses in different industrial sectors:

  • Robotics and Automation:
  • Cross roller bearings are extensively used in robotics and automation systems. These bearings provide high rigidity and precision, making them suitable for robotic joints, rotary tables, and linear motion systems. They can handle complex loads and moments, enabling smooth and accurate movement in robotic applications. Cross roller bearings are also preferred in industrial automation equipment such as pick-and-place machines, assembly systems, and semiconductor manufacturing equipment.

  • Machine Tools:
  • In machine tool applications, where high precision and rigidity are essential, cross roller bearings find wide usage. They are commonly employed in spindle units, rotary tables, and indexing heads of milling machines, lathes, and grinding machines. Cross roller bearings offer excellent rotational accuracy, enabling superior machining performance and surface finish. Their compact design allows for space optimization, making them suitable for machine tools with limited installation space.

  • Medical and Optical Equipment:
  • Cross roller bearings play a crucial role in medical and optical equipment that requires precise movement and stability. They are used in medical imaging devices, such as CT scanners and MRI machines, where the bearings support rotating components with high accuracy. Cross roller bearings are also found in optical instruments like telescopes, camera lenses, and precision measuring instruments, ensuring smooth rotation and precise positioning of optical components.

  • Aerospace and Defense:
  • In the aerospace and defense sectors, cross roller bearings are utilized in critical applications that demand high load capacity, rigidity, and reliability. They are used in aircraft landing gear systems, missile guidance systems, radar antennas, and satellite communication systems. Cross roller bearings are favored for their ability to accommodate both radial and axial loads, making them suitable for aerospace and defense applications with varying load requirements.

  • Industrial Robotics and Material Handling:
  • Cross roller bearings are integral components in industrial robotics and material handling equipment. They are commonly used in articulated robot arms, linear actuators, and conveyor systems. Cross roller bearings enable precise and smooth motion control, supporting heavy loads and withstanding dynamic forces. Their high stiffness and load capacity enhance the reliability and productivity of industrial robots and material handling systems.

  • Scientific and Research Instruments:
  • Cross roller bearings find applications in various scientific and research instruments that require precise positioning and smooth operation. They are used in electron microscopes, spectrometers, telescopes, and other scientific equipment. Cross roller bearings contribute to the stability and accuracy of these instruments, ensuring precise measurements and observations in research and scientific investigations.

In summary, cross roller bearings are specialized roller bearings that offer high load-carrying capacity, rigidity, and precision. They find diverse applications in industries such as robotics and automation, machine tools, medical and optical equipment, aerospace and defense, industrial robotics and material handling, as well as scientific and research instruments. The unique design and performance characteristics of cross roller bearings make them indispensable in industrial sectors that require precise motion control, high load capacity, and compact form factors.

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editor by CX 2024-05-14