Structural features and classification of roller type support roller bearings
Structural features of roller type support roller bearings
Roller type support rollers are single-row or double-row bearing units mounted on shafts or bolts. They consist of a thicker outer ring with a specific outer surface shape and a needle roller and cage assembly or a full complement needle roller or full complement cylindrical roller assembly. The outer ring has a crowned or cylindrical outer surface.
Support rollers with crowned outer surfaces can withstand higher radial loads and axial forces caused by slight misalignment and skewed operation; this type of bearing is suitable for applications such as cam transmission, bed rails, and conveying equipment. Roller type support rollers are available with or without inner rings, double-sided seals, and open types.
Support rollers with inner rings
Some rollers are separable structures, and the outer ring needle roller and cage assembly and the inner ring can be installed separately. Some needle roller and cage assemblies are integrated and can be installed separately from the inner ring.
Bearings without cages have as many rolling elements as possible and therefore have a very high load capacity. Due to the increased internal friction resistance, these bearings can reach slightly lower speeds than cage-guided bearing rollers.
Bearing rollers without inner rings
Some bearing rollers do not have inner rings. They are particularly compact but the shaft or bolt surface used as a raceway needs to be hardened and ground.
Some products are separable configurations. The outer ring, needle roller and cage assembly and the inner ring can be installed independently of each other.
Comparison of structural features
1. Bearing rollers with inner rings: suitable for applications requiring axial guidance, such as cam drives, bed rails, etc.
2. Bearing rollers without inner rings: suitable for applications with limited space and high shaft or bolt hardness requirements, such as precision machinery and automation equipment.
Roller-type bearing roller bearings are widely used in cam drives, bed rails, conveying equipment and other fields due to their diverse structural characteristics and strong adaptability. With their special structure and high load capacity, they meet various working conditions. Whether in a high-load environment or in precision equipment, they can perform well. Understanding the characteristics of different types of bearings will help you choose the most suitable bearing, thereby improving equipment performance and reliability.
