Single Row Cylindrical Roller Bearings Without Inner Ring

RNU single-row cylindrical roller bearings without inner rings are specially designed bearings whose main feature is that they do not have a traditional inner ring structure. This type of bearing is designed to better adapt to specific installation conditions and application requirements.

Design principle

No inner ring design: RNU bearings are designed without the inner ring of traditional bearings, and the function of the inner ring is usually assumed by the shaft itself. The purpose of this is to provide a more flexible solution under specific installation space or structural constraints.

Outer ring and rolling element: RNU bearings still have an outer ring and rolling elements (cylindrical rollers or balls), and the rolling elements support and distribute the load through the outer ring.

Bearing load capacity: Although there is no inner ring, RNU bearings can still withstand radial and axial loads. Its load capacity depends on the design and material selection of the outer ring and rolling elements.

Applications: RNU bearings are often used in specific applications that require a large gap between the outer ring of the bearing and the shaft or require a simplified bearing design. For example, in the design of some mechanical equipment, it may be necessary to reduce the overall length of the bearing or require the bearing to tolerate a certain degree of axial displacement.

Notes

Shaft design and manufacturing: Since RNU bearings do not have an inner ring, the manufacturing accuracy and surface quality of the shaft are very important for the installation and operation of the bearing. The size and shape of the shaft must be able to cooperate well with the outer ring and rolling elements to ensure the normal operation of the bearing.

Installation and adjustment: When installing RNU bearings, special attention should be paid to the positioning of the outer ring and the axial installation clearance. It is usually necessary to ensure the correct installation and adjustment of the bearing through the outer ring and related accessories of the bearing.

Lubrication and maintenance: Although RNU bearings do not have an inner ring, it is still necessary to regularly check and maintain the lubrication status and working conditions of the bearing to ensure its performance and life in operation.