crossed roller bearing

Deep groove ball bearing with seals or shields

Single row deep groove ball bearings with seals or shields are particularly versatile, have low friction and are optimized for low noise and low vibration, which enables high rotational speeds. They accommodate radial and axial loads in both directions, are easy to mount, and require less maintenance than many other bearing types. The integral sealing can significantly prolong bearing service life because it keeps lubricant in the bearings and contaminants out.Integral sea

ling prolongs bearing service life

Simple, versatile and robust design

Low friction and high-speed capability

Accommodate radial and axial loads in both directions

Require little maintenance

Knowledge and introduction of bearings    :                                                                                                 

Crossed roller bearings are highly specialized bearings designed to handle complex loads and provide precise rotary motion. Here's a detailed introduction to crossed roller bearings based on the provided search results:

1. Features:

• Crossed roller bearings consist of an outer ring, inner ring, rolling elements (cylindrical rollers), and spacers. The rollers are arranged in an X pattern, allowing the bearing to support axial loads from both directions, radial loads, tilting moment loads, and any combination of these loads with a single bearing position。

• They offer high rigidity and running accuracy, making them suitable for high-precision applications。

• These bearings are preloaded and can operate at circumferential speeds up to 2 m/s with grease lubrication。

• They are greased but can alternatively be lubricated using oil, and are particularly easy to fit。

• Some designs are also available in a corrosion-resistant version with special plating。

2. Applications:

• Robots: They are used in rotating mechanisms of robots that require rigidity, smooth motion, and accuracy。

• Machine Tools: They provide accurate, smooth motion for spindle heads and bearing shafts。

• Life Sciences and Medical: Found in small mechanisms or articulating arms that position and rotate objects in labs, and in indexing tables of blood centrifuges。

• Semiconductor and Electronics Fabrication: They deliver micron-scale accuracy demanded by the semiconductor industry for systems like pick-and-place and wafer handling equipment。

• Military and Aerospace: Used in airplane seat adjustment mechanisms, ground-based radar systems, and swivel mechanisms in military surveillance cameras。

• Food and Beverage: Used in spindles of food slicers and processors where accuracy, durability, and cleanliness are required。

• Crossed roller bearings are used in a variety of applications due to their ability to handle complex loads with high accuracy in limited spaces. Some applications include:

3. Design and Construction:

• Crossed roller bearings can have normal clearance or be preloaded. They can be fixed to adjacent constructions using clamping rings。

• The outer ring is typically split and held together by retaining rings, allowing for easier assembly and disassembly。

• Some series are designed with high rigidity, featuring solid, one-piece construction for high accuracy。

• They can be configured with separators to achieve optimal smoothness, especially for high rotational speeds。

4. Mounting and Installation:

• Mounting hole types are available for easy installation, with options including threaded holes on the inner ring and countersunk holes on the outer ring。

• Some designs integrate the inner and outer rings into one structure for high rigidity and accuracy。

5. Tolerances and Accuracy:

• Crossed roller bearings conform to dimension series 18 as per DIN 616, with cylindrical rollers to DIN 5402 and spacers made from plastic。

• They are available in various accuracy classes, with the ability to handle specific tolerances for precise applications。

6. Operating Temperatures:

• These bearings are designed for operating temperatures from –30°C to +80°C。

In summary, crossed roller bearings are highly versatile and are chosen for their ability to handle a combination of loads while maintaining precision and rigidity in a compact design. Their unique crossed roller design and various configurations make them suitable for a wide range of high-precision applications across different industries.

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