The cross cylindrical roller slewing bearing is composed of two races, with compact structure, light weight, high manufacturing precision, small assembly clearance, and high installation precision requirements. The rollers are arranged in a 1:1 cross, which can withstand axial force, overturning moment and large radial force. Because the rollers are vertically arranged on the 90° V-groove rolling surface through the gasket, this design enables the cross roller slewing bearing to bear large radial loads, axial loads, moment loads and other loads in all directions.
Main features of crossed roller slewing bearings:
The structure of the cross roller slewing bearing is much simpler. With a row of cylindrical rolling elements arranged in a single raceway, considerable axial and radial load carrying capacity and overturning moment can be obtained. Additionally, crossed roller slewing rings do not cause contact or locking on one side of the rollers. At the same time, since the inner and outer rings of standard crossed roller slewing bearings are separated, the clearance can be adjusted even if preload is applied. High-precision rotary motion.
Advantages of crossed roller slewing bearings over ordinary slewing bearings:
1. The precision level that cross roller slewing bearings can achieve is much higher than ordinary slewing bearings, and the radial runout and axial runout that can be achieved are also much higher than ordinary slewing bearings.
2. The rigidity of the crossed roller slewing bearing is much higher than that of the ordinary slewing bearing, and the running noise is lower than that of the crossed roller bearing. Therefore, in a low-noise working environment, it is best to choose a crossed roller slewing bearing.
3. In terms of structure, compared with ordinary slewing bearings, the structure of cross roller slewing bearings is much simpler. A row of cylindrical rolling elements arranged criss-cross on a single raceway makes it possible to obtain fairly large bearings. In order to achieve the same effect, ordinary slewing bearings must be arranged on three rows of raceways through three rows of cylindrical rolling elements. In this way, the crossed roller slewing bearing occupies much less space and is lighter in weight than ordinary three-row roller slewing bearings.
In terms of structure, the structure of crossed roller slewing bearings and crossed roller bearings is much simpler than traditional bearings. With multi-row cylindrical rolling elements, considerable axial and radial load capacity and overturning moment can be obtained. It is much simpler. Traditional bearings must be arranged in sequence through multiple sets of bearings to achieve the same effect, which brings great convenience in terms of design, assembly and installation. Compared with traditional bearings, the cross-roller slewing ring structure and the single-row raceway structure of the cross-roller bearing occupy much less equipment space, and the difficulty of assembly is also greatly reduced.
Application industries of cross cylindrical roller slewing bearings:
It is often used on bucket wheel machines, overweight transport machinery, port machinery, mining machinery, park amusement machines, filling machines, construction machinery and other large rotating equipment.
AUB manufactures single row crossed cylindrical roller slewing rings in a variety of sizes and sizes to meet the needs of specific applications. Customized single row crossed cylindrical roller slewing rings with average raceway diameters ranging from 310 to 2200mm.
The gearless single row crossed cylindrical roller slewing ring bearings offered by AUB are simple in design, consisting of one-piece inner and outer rings and cylindrical rollers, which are separated by polyamide spacers and usually protected by integral seals. Single row crossed cylindrical roller slewing ring bearings can withstand heavy radial loads and moderate axial loads as well as overturning moments. These slewing ring bearings are suitable for bearing arrangements where stiffness is important or where zero operating clearance or preload and constant rotational resistance are required.
Compared with single-row four-point contact ball slewing bearings, single-row cross cylindrical roller slewing bearings have stricter requirements on the flatness and rigidity of the support surface. Due to the wide range of applications for single row crossed cylindrical roller slewing bearings, AUB manufactures them in a variety of executions and sizes, which are available from stock or within short lead times. AUB manufactures a wide variety of custom single row crossed cylindrical roller slewing rings to meet the needs of specific applications. Custom executions can include special ring materials and unique bolt patterns. Load capacity, speed capability and/or running accuracy can also be customized. A custom slewing ring may already exist to meet your specific requirements.