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Cylindrical roller thrust bearings

Cylindrical roller thrust bearings

Cylindrical roller thrust bearings are designed to accommodate heavy axial loads and impact loads. They must not be subjected to any radial load. The bearings are very stiff and require little axial space.   Axial cylindrical roller bearings have a low axial section height, high load capacity and high rigidity. Depending on the design, they can support axial forces in one direction or in both directions. Radial forces must be supported by separate means.

Size range: 100 - 2540 mm (Bore dimension)

Cylindrical roller thrust bearings can be used for bearing arrangements which are required to carry very heavy axial loads, to be insensitive to shock loads, to be stiff and to take up little axial space. Their main use is in applications where the load carrying capacity of thrust ball bearings is inadequate.

CYLINDERCIAL ROLLER THRUST BEARINGS

Most FV cylindrical roller thrust bearings are single direction bearings, i.e. they can provide axial support for a shaft in one direction.  They are particularly simple in design and are available as single row bearings (1) or as multi-row bearings (2,3)

All cylindrical roiler thrust bearings have a modified line contact between rollers and raceways. This means that damaging edge stresses are avoided.The bearings are all of separable design;the washers and roller and cage assemblies can be mounted separately.

Double direction cylindrical roller thrust bearings, which can axially locate the shaft in both directions,can be easily assembled using cylindrical roller and cage thrust assemblies and bearing washers of series 811 and 812 bearings together with an appropriately designed intermediate washer. Internally (shaft) centred double direction bearings (4) are obtained by combining two cylindrical roller and cage thrust assemblies and two housing washers with the intermediate washer and externally (housing bore) centred double direction bearings (5) by combining two cylindrical roller and cage thrust assemblies and two shaft washers with the inter- mediate washer. ZS intermediate washers for smaller double direction bearings based on series 811 components are included in the FV product range.

Cylindrical roller thrust bearings


Dimensions

The boundary dimensions of the bearings identified by a standard designation con- form to ISO 104.


Misalignment

Cylindrical roller thrust bearings do not permit any angular misalignment between shaft and housing, nor any errors of align ment between the support surfaces in the housing and on the shaft.


Single direction bearings 

Single direction axial cylindrical roller bearings comprise an axial cylindrical roller and cage assembly, an externally centred housing locating washer and an internally centred shaft locating washer.

The bore diameter, outside diameter and running surface of the housing locating washer and the shaft locating washer are precision machined. The bearings can support axial forces in one direction.

Bearings 811, 812 are of a single row design and correspond to DIN 722/ISO 104, bearings 894 are of a double row design to DIN 616/ISO 104. Bearings with the designation Z-5..AR have non-standardised dimensions and designations.


Split bearings 

Split axial cylindrical roller bearings are used for bearing positions that are difficult to access. They are mounted, for example, together with split radial cylindrical roller bearings in air preheaters.

The bearings have two or three rows of rollers. The main dimensions and designations (Z-5..AR) of these bearings are not standardised.


Double direction bearings 

Double direction axial cylindrical roller bearings comprise two axial cylindrical roller and cage assemblies, two externally centred housing locating washers and an internally centred intermediate washer. The bore diameter, outside diameter and running surface of the housing locating washers and the intermediate washer are precision machined. The intermediate washer is guided on the shaft and must be rigidly clamped in place.

Double direction axial cylindrical roller bearings can support axial forces in both directions.

The main dimensions and designations (Z-5..AR) of these bearings are not standardised.


Single direction axial cylindrical roller bearings

Single direction axial cylindrical roller bearings

Most FV cylindrical roller thrust bearings are single direction bearings, i.e. they can provide axial support for a shaft in one direction. They are particularly simple in design and are available as...

Double direction axial cylindrical roller bearings

Double direction axial cylindrical roller bearings

Double direction axial cylindrical roller bearings comprise two axial cylindrical roller and cage assemblies, two externally centred housing locating washers and an internally centred intermediate was...

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