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RE Crossed Roller Bearings

Q: What makes RE Crossed Roller Bearings different from other crossed roller bearings?

RE Crossed Roller Bearings are distinct primarily due to their unique structural configuration: they feature a separable inner ring and a one-piece, integrated outer ring. This design is specifically optimized for applications where the outer ring needs to achieve high rotational accuracy. While many crossed roller bearings offer precision, the RE type's construction provides enhanced rigidity and stability for outer ring rotation, making it ideal for specialized machinery like certain rotary table bearings and advanced robot bearings where this specific motion profile is crucial. This contrasts with types like RB, which are designed for inner ring rotation.

Q: What types of loads can RE Crossed Roller Bearings handle?

The design of RE Crossed Roller Bearings allows them to handle combined loads including radial, axial, and moment loads simultaneously. This is thanks to their unique roller arrangement, where each roller is crossed with another at a 90-degree angle. This design significantly increases the bearing's rigidity and load-carrying capacity, allowing it to replace a pair of traditional bearings in many high precision applications. For example, in robot bearings or aerospace bearings, this type can effectively manage complex dynamic loads, ensuring the stability and accuracy of the system.

RE Crossed Roller Bearings belong to the family of high-precision crossed roller bearings, designed with a separable outer ring and two-piece inner ring. Based on the structure of the RB series, RE series bearings maintain the same external dimensions while offering better adaptability for applications requiring high outer ring rotation accuracy. These bearings are widely used in rotary tables, robot joints, precision equipment, and aerospace mechanisms.

Structural Advantages of RE Crossed Roller Bearings

RE Crossed Roller Bearings are characterized by a separable outer ring and a split inner ring, which allows for simplified installation and optimized adjustment during assembly. This design reduces internal stress caused by uneven mounting and ensures stable rotation accuracy.

In comparison to the RB type, RE bearings reverse the inner and outer ring separation, making them more suitable for mechanisms where the outer ring rotates, such as rotary tables and gimbals. Their rigid outer ring ensures minimal deformation during load application.

Applications in High-Precision Machinery

Due to their excellent rigidity and compact design, RE Crossed Roller Bearings are widely used in rotary table bearings, robot joints, aerospace bearings, and other thin section bearings applications. They provide excellent performance in environments that require high precision and low torque fluctuation.

Their compact and integrated structure allows them to be used in limited spaces, making them ideal for high-performance machinery where space-saving is essential. The RE series also reduces the need for additional fixing parts, simplifying assembly.

Differences Between RE and Other Crossed Roller Bearing Types

The RE series maintains the same overall dimensions as the RB series, but swaps the separability between the inner and outer rings. This structural change optimizes the bearing for outer ring rotation, unlike the RB or SX series which are better for inner ring rotation.
Compared to RA or CRBS types, which are ultra-thin and used in robot bearings, the RE type offers higher rigidity and is better suited for applications where strength and support under load are prioritized. While other types may be used in lightweight designs, the RE series excels in durability and support.

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FREQUENTLY ASKED QUESTIONS

What makes RE Crossed Roller Bearings different from other crossed roller bearings?

RE Crossed Roller Bearings are distinct primarily due to their unique structural configuration: they feature a separable inner ring and a one-piece, integrated outer ring. This design is specifically optimized for applications where the outer ring needs to achieve high rotational accuracy. While many crossed roller bearings offer precision, the RE type's construction provides enhanced rigidity and stability for outer ring rotation, making it ideal for specialized machinery like certain rotary table bearings and advanced robot bearings where this specific motion profile is crucial. This contrasts with types like RB, which are designed for inner ring rotation.

Are there any special requirements for installing RE Crossed Roller Bearings?

Yes, proper installation is crucial for ensuring the performance of RE Crossed Roller Bearings. Due to its separable inner ring design, special care is needed during installation. First, the mounting surfaces must be clean, flat, and free of burrs. Second, the inner and outer rings need to be precisely aligned to prevent any preload or deformation. We recommend using professional tools for installation and strictly following the manufacturer's installation instructions. Incorrect installation can lead to reduced performance, increased noise, and even premature failure. Following these guidelines is key to ensuring the bearing reaches its full potential for high precision and long life.

What is the lifespan of RE type bearings?

The lifespan of RE type bearings depends on various factors, including the operating load, speed, lubrication conditions, and ambient temperature. As a high precision bearing, the RE series is designed for durability and long life. By using high-quality steel and precise manufacturing processes, TFL's RE bearings can withstand complex combined loads and maintain stable performance over a long period. To maximize their service life, we strongly recommend that customers choose the appropriate lubricant for their specific application and follow the correct installation and maintenance guidelines. Regular inspection and proper lubrication are key to ensuring the bearing's long-term stable operation.

What types of loads can RE Crossed Roller Bearings handle?

The design of RE Crossed Roller Bearings allows them to handle combined loads including radial, axial, and moment loads simultaneously. This is thanks to their unique roller arrangement, where each roller is crossed with another at a 90-degree angle. This design significantly increases the bearing's rigidity and load-carrying capacity, allowing it to replace a pair of traditional bearings in many high precision applications. For example, in robot bearings or aerospace bearings, this type can effectively manage complex dynamic loads, ensuring the stability and accuracy of the system.