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Cross cylindrical roller slewing bearing

Categories Turntable Bearings
Brand Name: BCM
Place of Origin: Luoyang
MOQ: 1PCS
Packaging Details: wooden case
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Cross cylindrical roller slewing bearing

The design and application of the cross cylindrical roller slewing bearings are basically the same as those of the four point contact ball slewing bearing, except that the rolling elements are substituted from balls into rollers and the contact way between the rolling elements and rings is changed from point contact into line contact.

Those changes allow for the carrying capacity to be increased, but the wear and the friction moment load are also increased. cross cylindrical roller slewing bearings are composed of a inner ring, outer ring, a single row of rollers, cage (spacer), and seal device etc. cross cylindrical roller slewing bearing can carry different combined forces caused by axial load, tilting moment and radial load in different working condition, by adjusting the quantity of crossed rollers and contact angle.

There are integral and separate rings in the structure of cross cylindrical roller slewing bearing. Cages or spacers are usually adopted within design in order to ease friction. The complement of a full set of rollers is usually taken when the load is heavier. However, the greater frictional resistance could cause groove marks around the circle where rollers and raceway contact. This slewing bearing with a design of a full complement of rollers is mainly applied in the condition where a heavier axial load is the primary load, and the requirement for tilting moment and friction moment is not so high.

Cross cylindrical roller slewing bearings main structural characteristics: 1:1 cross arrangement of cylindrical rollers.The bearing with this structure features high stability, high precision, and high impact resistance. For example, the cannon's rotary base uses this kind of bearing.

Slewing bearins are large size bearings which can carry higher axial, radial laods and overturning moments at the same time, Slewing bearing generally have mounting holes, internal or external gears, lubricant holes and sealign equipment.

Slewing bearings are widely used in cranes, excavation machines, construction machinery, port cargo handling machinery, large turnplates of high precision radars and missile launchers, etc.

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