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Cylindrical roller thrust bearings are designed to operate under heavy axial loads at moderate speeds. They are relatively insensitive to shock loads, are very stiff and require little axial space. As standard they are available as single direction bearings and can only accommodate axial loads acting in one direction.
Cylindrical roller thrust bearings are of separable design, the individual components can be mounted separately. These bearings do not permit any angular misalignment between shaft and housing nor any errors of alignment between the support surfaces in the housing and on the shaft.
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Axial cylindrical roller bearings
Axial cylindrical roller bearings comprise axial cylindrical roller and cage assemblies and shaft and housing locating washers.
The bearings have particularly small axial section height, have high load carrying capacity and high rigidity and can support axial forces in one direction.
Axial cylindrical roller and cage assemblies
Axial cylindrical roller and cage assemblies comprise axial cages with one or two rows of cylindrical rollers. The cage assemblies have particularly small axial section height, high load carrying capacity and high rigidity. They can support axial force from one direction and act as non-locating bearings in a radial direction. Axial cage assemblies are combined with housing or shaft locating washers or are integrated directly in the adjacent construction. If they are used without
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UNITEC is a manufacturing company, certified according to ISO 9001 and belonging to the MONDIAL Group. In addition to the precision bearings for machine tools (crossed roller bearings, combined axial-radial bearings for ball screws and for indexing tables), UNITEC also manufactures bearings for the following applications:
SCREW EXTRUDERS:
- tandem bearings
TEXTILE INDUSTRY:
- special bearings, cam followers, track rollers
PAPER CONVERTING INDUSTRY:
- axial, radial and combined bearings, self-aligning bearings
PRINTING MACHINES
SENDZIMIR ROLLING MILLS
- Double- or 3-row roller bearings
STEEL AND METAL WORKING INDUSTRY
- multi-row roller bearings for cylinders
- chain wheels
- backup rollers for straightening machines
- combined needle roller bearings
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RBC Tapered Thrust Bearings
RBC Tapered Thrust Bearings are used in applications where heavy loads are present. RBC Tapered Thrust Bearings offer:
* Sealed versions where lubrication is problematic or space constraints do not offer the luxury of a shaft seal
* Unsealed versions available
* Case carburized bearing quality steel
* Size ranges from 1 inch to 3 inches bore diameters
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Cylindrical roller thrust bearing, with cylindrical rollers crowning-processed and even pressure between rollers and ball race, can bear one-way axial load, mainly used in the crane and oil drillers etc.
ZQZ cylindrical roller thrust bearings have the following types: 81100, 81200, etc.
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Spherical roller thrust bearing, with self-aligning function, large axial loading capacity and some radial loading capacity, are mainly used in the hydraulic motor, marine screw shaft, head mast, press, etc.
Specifications of ZQZ bearings include 29200, 29300 and 29400 series.
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GWG produce large diameter cylindrical roller thrust bearing . In addition to standard items,GWG can make non-standard and custom bearing with shorter lead time than expected.For more information,please view our homepage www.gwgbearings.com
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Cylindrical roller thrust bearings are separable axial bearings:
- Available in single direction as standard, double direction upon request
- Suitable for high axial loads
- Insensitive to shock loads
- Low to medium speed ratings
- Standards: DIN 616, DIN 722
- Series: 81100, 81200
- Application examples: injection moulding machines, presses, etc.
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Catalog sizes and engineered to order bearing designs are readily available.
Cylindrical Roller Designs - Catalog and Engineered
Aligning, Banded, and Double Acting Designs Available
Tapered Roller Designs - TTHD & TTVF
Cantilever Designs for Minimal Shoulder Support
Tandem Thrust 2-8 Stage Designs
High Temperature Designs Available
High Speed Designs Available
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These bearings can take over heavy axial loads and simultaneously they can accommodate radial loads with values of up to 55% of the axial load magnitude.
Because of their self-aligning capability, they absorb the bending deviation of the shaft.
RKB spherical thrust bearings have a machined brass cage guided by a sleeve clamped in the shaft washer bore (suffix EM). The shaft washer and the cage with rollers form a non-separable unit.
The overall dimensions of the spherical roller thrust bearings are in accordance with ISO 104:1979, so that they are interchangeable with different designs, even the earlier ones (suffix B).
Suggested oil lubrication and minimum load dependent on speed has to be taken into account for satisfactory running.
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Axial spherical roller bearings are single row, self-aligning roller bearings. They comprise solid shaft and housing washers and asymmetrical barrel rollers with cages. The cage holds the roller and cage assembly together with the shaft locating washer. The bearings can be dismantled. The parts of the bearings can be fitted separately.
Axial spherical roller bearings can support very high axial loads and permit relatively high speeds. Since the raceways are at an angle to the bearing axis, the bearings can also support radial loads.
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GWG produce large diameter spherical roller thrust bearings. In addition to standard items,GWG can make non-standard and custom thrust roller beairngs with shorter lead time than expected.For more information,please view our homepage www.gwgbearings.com
Series Number:
292xx
293xx
294xx
Bore diameter range:
150mm-900mm
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Excel series-Spherical Roller Thrust Bearings
The raceway of housing washer of this bearing type is spherical with the center of the radius located on the bearing axis. The design provides self-alignment capability to the bearing. The contact angle () is approximately 45° enabling the bearing to support axial load and a small to moderate amount of radial load.
This bearing type is often used for injection molding machines, crane hooks and other large machines.
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Spherical roller thrust bearings are separable single direction acting axial bearings
* Able to accommodate misalignment
* Suitable for high axial and some radial loads
* Relatively high speed ratings
* Standards: DIN 728
* Series: 29200, 29300, 29400
* Application examples: heavy vertical shafts, injection moulding machines, etc.
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RKB taper roller thrust bearings have separable parts: shaft washer, housing washer and rolling element assembly.
RKB program includes the single direction type, the double direction type and the screw-down special type.
RKB T.R.T bearings are manufactured in two constructive versions.
The rollers are radially guided by the rib of one washer (suffix ZB).
These bearings can also be produced in the version without the cage (suffix V).
The most common series are T, TK and 351 type.
Bearings made of case hardened carburizing alloy steels can be also produced.
RKB bearings are used in the rolling mill applications associated.
RKB produces double direction taper roller thrust bearings in two constructive versions, either with central plane shaft washer and taper raceways in both housing washers or with both plane housing washers and taper raceways in the central shaft washer.
A special sleeve is arranged, so no special adjustment of the bearing is required.
As the double direction taper roller bearings are usually mounted with loose fit on the roll neck, the shaft washer is normally provided with one or two locating slots that, engaged with key-way or similar devices, prevent the shaft washer from rotating on the seating.
The most common series are 350, 351, 353 and TTK type.
RKB screw-down bearings are a special design of the single direction taper roller thrust bearings used for rolling mill arrangements.
They are generally produced with case hardened carburizing alloy steels and with full complement of long rollers of large diameter.
The dimensions of taper roller thrust bearings are not standardized.
The main boundary dimensions are produced according to ISO 199/1979
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The cylindrical roller thrust bearing is applied to take axaial loads. It has a high load capacity. The housing washer and the shaft washer of it are made of bearing steel. The cage material can be copper base alloy,aluminum alloy,steel.the cylindrical roller thrust bearings made in NNN use copper base alloy as the basic cage material.Aluminum alloy & carbon steel and plastic are also available on the request of the clients.In that case,some special suffix should be appended to the bearing codes to show the difference.
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Tapered roller thrust bearings allow for a very compact bearing arrangement which can carry very heavy axial loads, and provide high shock-load resistance in a variety of applications.
We produce single direction tapered roller thrust bearings and double direction tapered roller thrust bearings. The screw-down bearings constitute a special design of single direction tapered roller thrust bearing.
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Axial needle roller bearings
Axial needle roller bearings are units comprising axial needle roller and cage assemblies and axial bearing washers with a centring spigot. They can be combined with drawn cup needle roller bearings and needle roller bearings. The axial running surface for the needle roller and cage assembly must be hardened and ground.
Axial needle roller and cage assemblies
Axial needle roller and cage assemblies comprise plastic or metal axial cages with integrated needle rollers and have a very small axial section height. They can support high axial forces in one direction. Radial loads must be supported by separate means. Axial needle roller and cage assemblies require hardened and ground axial running surfaces for use as raceways.
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