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A Comprehensive Guide to the Selection and Application of Crossed Roller Bearings

What is a Crossed Roller Bearing?

A crossed roller bearing is a high-precision rolling bearing where rollers are arranged crosswise at 90° between the inner and outer rings. It can simultaneously bear radial, axial, and moment loads, making it a core component in precision transmission systems. This structural design enables high rigidity and high-precision rotation in confined spaces, and it is widely used in industrial equipment with strict requirements for stability and accuracy.

Features of Crossed Roller Bearings

1.Strong composite load-bearing capacity: The cross-arranged roller design allows it to bear radial, axial, and moment loads simultaneously without the need for additional bearings, simplifying the equipment structure.

2. High rigidity and high precision: The raceways and rollers undergo precision grinding, with rotational accuracy reaching P5 class and above, and small radial runout, making them suitable for high-precision transmission scenarios.

3. Compact structure: The thin-walled section design reduces weight by 20%-30% compared to traditional bearings, making it suitable for space-constrained equipment (such as vertical machining center rotary tables and robot joints).

4. Diverse structures: Common types include split outer ring type (RB, RA, SXU), split inner ring type (RE), and integral structure (RU, CRBH), which can be flexibly selected according to the rotation requirements of the equipment.

Applications of Crossed Roller Bearings

With high precision and composite load-bearing characteristics, crossed roller bearings are widely used in various fields:

Industrial machine tools: Rotary tables of vertical machining centers and spindles of vertical lathes, ensuring machining accuracy.

Construction machinery: Slewing bearings of excavators and rotating mechanisms of cranes, withstanding complex working condition loads.

Precision equipment: Robot joints and semiconductor manufacturing equipment, meeting the requirements of high rigidity and low vibration.

New energy equipment: Yaw mechanisms of wind turbines and photovoltaic tracking systems, adapting to harsh outdoor environments.

Factors Affecting the Price of Crossed Roller Bearings

The price of crossed roller bearings is affected by multiple factors:

<!--[if !supportLists]-->1. <!--[endif]-->Raw materials: Products made of high-carbon chromium steel (GCr15) or stainless steel (SUS440C) are more expensive than those made of ordinary steel.

<!--[if !supportLists]-->2. <!--[endif]-->Precision grade: High-precision products of P2/P4 grades are 15%-30% more expensive than P5 grade due to complex processing techniques.

<!--[if !supportLists]-->3. <!--[endif]-->Specifications and structure: Large-size or customized structures (such as designs with mounting holes) have prices that increase with the difficulty of processing.

<!--[if !supportLists]-->4. <!--[endif]-->Market supply and demand: Shortages of raw materials during peak seasons (such as industrial production peak periods) may lead to short-term price fluctuations. For the latest quotations of specific models, you can contact us to obtain a detailed quotation sheet. Factors to Consider When Purchasing Crossed Roller Bearings

<!--[if !supportLists]-->1. <!--[endif]-->Size matching: Accurately measure the inner diameter, outer diameter, and width of the equipment's installation space, and reserve gaps considering thermal expansion and contraction to avoid installation interference.

<!--[if !supportLists]-->2. <!--[endif]-->Structural adaptation: Split outer ring types (RB, RA) are suitable for high-precision rotation of the inner ring; split inner ring types (RE) are adapted to scenarios where the outer ring rotates; integral structures (RU) are suitable for equipment where both inner and outer rings need to run with high precision.

<!--[if !supportLists]-->3. <!--[endif]-->Installation method: Bearings with mounting holes can be directly fixed by bolts; those without mounting holes need to be matched with bearing seats and interference fits, and the selection should be based on the equipment assembly process.

<!--[if !supportLists]-->4. <!--[endif]-->Working condition parameters: Match parameters according to load size (refer to rated dynamic/static load), rotation speed (large clearance should be selected for high-speed scenarios), and ambient temperature (stainless steel materials are preferred for high-temperature environments).

<!--[if !supportLists]-->5. <!--[endif]-->Supplier qualifications: Choose suppliers with precision processing capabilities and customized services to ensure product quality and after-sales support

A High-Quality Supplier of Crossed Roller Bearings - NewBee Transmission

NewBee Transmission is a high-tech enterprise specializing in precision transmission equipment. It has been deeply involved in the field of crossed roller bearings for many years and is a well-known supplier of crossed roller bearings in the industry. We provide a full range of crossed roller bearings (covering RB, RA, RE, RU, SXU, CRBH and other structural types). Our products are made of high-carbon chromium steel or stainless steel, with precision up to P2 grade, meeting the needs of industrial machine tools, robots, new energy equipment and other fields. Relying on advanced five-axis processing equipment and strict quality control systems, we can customize special specifications of bearings according to customer needs and provide installation guidance and after-sales technical support.

For detailed parameters, customized solutions or the latest quotations of crossed roller bearings, please feel free to contact us through the following ways!