Crossed Cylindrical Roller Bearings Types

This article will provide you with an overview of the different types of crossed cylindrical roller bearings. Read on to discover the differences between PXB, XU, RU, and CYB. Ultimately, this will help you decide which type of bearing you need for your application. Here are some benefits of each type:

PXU

The PXU series of crossed cylindrical roller bearings features a single inner ring with a split outer ring. This configuration is ideal for applications that require high accuracy and minimal clearance. The outer ring is held in place by three tooth lock washers and is not subjected to tensile stress. Once installed, the PXU series can be used as a stand-alone bearing, or as part of a multiple-bearing combination.

The high precision of cross-roller bearings makes them a suitable choice for a variety of high-precision applications. These bearings comprise two inner and outer rings, roller elements, and plastic spacers. The bearing is held together by three retaining rings. This design enables the bearing to handle a high amount of torque without jamming or flexing. PXU crossed cylindrical roller bearings are available in both cylindrical and biaxial varieties.

PXB

The PXB series of crossed cylindrical roller bearings feature a compact design, which makes them suitable for space-constrained applications. These bearings feature a high degree of running accuracy and rigidity, and are suitable for high-speed rotation. The outer ring is split in two along the circumferential axis to allow for easy assembly. They are also suitable for applications with a rotating inner ring.

The cross-roller design of this bearing enables it to carry external loads in any direction. This resulted in three to four times higher rigidity than angular contact ball bearings. The cross-roller bearing's width space requirement is less than half that of an angular contact ball bearing. In addition, it has a lower rate of skewing than angular contact ball bearings.

RU

RU crossed cylindrical roller bearings are characterized by their rolling contact structure. Because they have rolling contact structure, they don't require presser flanges on the outer ring and inner ring. This type of bearing is also capable of rotating both the outer and inner ring. Nevertheless, they must be lubricated regularly. The locking mechanism of crossed roller bearings is divided into three to four stages.

The cross cylindrical roller bearings have a high stiffness and are suitable for carrying loads in all directions. The symmetrical ring structure and washers prevent roller tilting, which improves the bearing's rotation accuracy. These bearings also feature high preload capability and simple installation. For this reason, they are popular in many industries. But, it's essential to understand how these bearings work before purchasing one.

XU

The cross roller bearing, also known as the XU type, is a highly versatile bearing with multiple applications. Compared to rolling bearings, this type is preloaded, sealed, and has a lubrication nipple on the outer ring. This type is widely used in various industries. These bearings are ideal for a variety of applications, including precision devices, medical equipment, industrial robots, and aerospace.

XU crossed roller bearings feature two rows of cylindrical rollers that are vertically aligned through a nylon spacer. They are mounted on a 90-degree V-shaped raceway, which makes them very durable and flexible. The precision of DK crossed roller bearings can reach P2 levels, and XU series bearings have mounting holes, which eliminate the need for a fixed flange or housing.