Products Center

Rolling bearings support and guide rotating or oscillating machine elements – such as shafts, axles or wheels – and transfer loads between machine components. They provide high precision and low friction and therefore enable high rotational speeds while reducing noise, heat, energy consumption and wear.

Tapered Roller Thrust Bearings

Roller bearings — also known as rolling-element bearings — are similar to ball bearings in that they are designed to carry a load while minimizing friction. However, roller bearings transmit loads using cylinder rolling elements, rather than balls, to maintain the separation between moving parts of the bearing. These versatile bearings can contain single or multiple rows of rolling elements; multiple rows can significantly improve radial load capacity. Also, the use of different roller shapes can further reduce friction and support both radial and axial loads.

Roller bearings are used in rotary applications to replace sliding movement with low friction, rolling. Automated roller bearing setting techniques offer many advantages like reduced setting time, assembly cost, and reliable setting. To select the right roller bearing, one must determine the desired bearing life and a sufficient basic dynamic load rating to meet that life requirement. Roller bearings are used in power generation, wind turbines, gear drives, rolling mills, machine tool spindles, gear reduction units, etc.

Please get in touch with us for details.

Mail:[email protected]

Tapered roller thrust bearings carry axial loads with no radial load-carrying capacity. They comprise a shaft washer, a housing washer, and a roller and cage assembly and are separable. These bearings have raceways on the face of the washers.

Tapered roller thrust bearings are available in a single direction, double direction, and screw-down configurations:

(1) Single direction taper roller thrust bearings

single direction taper roller thrust bearings in two designs that differ in the execution of the washers. Bearings of the one design have a shaft and housing washers with the exact dimensions. These washers both have a tapered raceway and one retaining flange. Bearings of this design are preferred where weighty axial loads occur, for example, in the swivels of drilling rigs or crane hooks. The bearings have a cage that is centered on both washers.

Bearings of the other designers have a shaft washer with the tapered raceway and retaining flange, whereas the housing washer is a plane (flat). Therefore, bearings of this design can accept minor eccentricities of the shaft concerning the housing bore without any detrimental influence on bearing performance. Except for a few sites with a full complement of rollers, the bearings are fitted with a roller-centered cage.

(2) Double direction taper roller thrust bearings

Taper roller thrust bearings of the double direction type are mainly used with multi-row cylindrical roller bearings in rolling mill applications. Those bearings with a plane shaft washer are the more popular as they can accommodate slight eccentricities of the shaft concerning the housing bore, of the order of the radial internal clearance of the radial bearing with which they are used. A spacer sleeve is arranged between the two housing washers. This is dimensioned so that the cover screws of the chock can be fully tightened, and no unique spring adjustment of the bearing is required.

(3) Screw-down bearings

Taper roller thrust bearings of this type must accommodate weighty axial loads and permit angular movement of the screw spindle concerning the support. Therefore, the bearings are generally of the full complement type and have extremely long rollers of large diameter. To accommodate the alignment movements of the chock without detrimental effect on bearing performance, the bearings have one sphered washer. This may be either the shaft or the housing washer.  The necessary alignment movements occur in directions with a sphered shaft washer above the roller complement between the sphered shaft washer surface and a correspondingly concave sphered screw spindle or pressure plate.

Features of Tapered Roller Thrust Bearings:

  • Separable design
    The shaft and housing washers and the roller and cage thrust assemblies of tapered roller thrust bearings with cages can be mounted separately.
  • Low friction
    The optimized roller end design and surface finish on the flange promote lubricant film formation, resulting in lower friction. This also reduces frictional heat and flange wear.
  • Long service life
    Depending on the design, crowned or logarithmic raceway profiles optimize the load distribution along the contact surfaces, reduce stress peaks at the roller ends, and reduce the sensitivity to misalignment compared with conventional straight raceway profiles.
  • Enhanced operational reliability
    The surface finish on the contact surfaces on the rollers and raceways supports the formation of a hydrodynamic lubricant film.
  • High load-carrying capacity
    The rollers incorporated in tapered roller thrust bearings are manufactured to such close dimensional and geometrical tolerances that they are practically identical. This provides optimal load distribution and enables the bearings to accommodate heavy axial loads.

Applications of Tapered Roller Thrust Bearings:

Here are examples of applications in which tapered roller thrust bearings might be used:​

  • Material handling
  • Industrial transmissions
  • Machine tools
  • Trucks, trailers, and buses

Related Products

Roller Bearing Video