Crossed roller bearings and slewing bearings: The difference between the two major bearing technologies

In bearing technology, crossed roller bearings and slewing bearings are two important types of bearings, each playing an irreplaceable role in different application fields. These two types of bearings have significant differences in structure, performance and application. Today, Luoyang Coperion Bearing Co., Ltd. will take you to a deep understanding of the difference between crossed roller bearings and slewing bearings, and provide valuable reference for your bearing selection.

Structural Differences

Crossed roller bearings: Crossed roller bearings are known for their unique cross-arranged roller design. They consist of two cross-arranged roller rings, each with an inner and outer ring connected by rollers. The cross-arrangement of the rollers allows the bearing to withstand forces from all directions simultaneously, including radial forces, axial forces, and moments, giving it excellent load-bearing capacity and rigidity.

Slewing bearings: In contrast, the structure of a slewing bearing is relatively simple. It consists of an inner and outer ring, the inner ring is fixed to the base, and the outer ring is rotatable. The inner and outer rings are connected by rollers or balls, allowing the outer ring to rotate relative to the inner ring. This structure allows the slewing bearing to withstand large radial and axial loads while maintaining low friction and torque.

Performance characteristics

Crossed roller bearings:

· High rigidity: The cross-arranged roller design significantly improves the rigidity of the bearing, making it less likely for the bearing to deform and displace when under load.

· High precision: The split design of the inner and outer rings and the adjustability of the gap ensure the high-precision rotational motion of the bearing, meeting the needs of precision machining and high-speed operation.

· Wide applicability: Due to its excellent performance, crossed roller bearings are widely used in machine tools, industrial robots, automation equipment and other fields.

Slewing bearings:

· Large load bearing capacity: The slewing bearing can withstand large radial and axial loads and is suitable for use under heavy load conditions.

· Low friction and low torque: Its structural design makes the bearing have low friction loss and low torque during rotation, which improves mechanical efficiency.

· Wide application: Slewing bearings are widely used in engineering machinery, port machinery, aerospace, wind power generation and other fields, such as tower cranes, excavators, wind power generation equipment, etc.

Application Scenario

Crossed roller bearings, due to their high rigidity and high precision, perform well in situations that require precision machining and high-speed operation. For example, in the spindle, rotary table, robotic arm and other parts of CNC machine tools, crossed roller bearings can ensure the stable operation and machining accuracy of the equipment.

Slewing bearings are widely used in large mechanical equipment and heavy-load conditions due to their large load-bearing capacity and low friction and low torque. In the rotating mechanism of equipment such as cranes and excavators, slewing bearings can support the rotation of the equipment and improve work efficiency and safety.

As two important types of bearings, crossed roller bearings and slewing bearings have significant differences in structure, performance and application. Luoyang Coperion Bearing Co., Ltd., as a professional bearing manufacturer, is committed to providing customers with high-quality and efficient bearing products. We hope that through the popular science introduction of this article, we can help you better understand the difference between the two bearings and provide strong support for your bearing selection. In the future development, we will continue to adhere to the development concept of "quality-oriented, innovation-oriented" and contribute more to the progress of the industrial field.