Screw-down bearings

Screw-down bearings

Axial tapered roller bearings for screw-down mechanisms in rolling stands can support extremely high axial forces in one direction. The separable bearings are mounted between the upper chock and the screw-down mechanism. Due to their low friction, these bearings reduce the screw-down forces. Axial tapered roller bearings for screw-down mechanisms have non-standardised dimensions and designations Z-5..TA1 or F-8..TA1. The bearings are available in various designs.
Size range: 200 - 900 mm (Outer dimension)

Screw-down bearings

Taper roller thrust bearings of this type must be able to accommodate extremely heavy axial loads and also permit angular movement of the screw spindle with re spect to the support. The bearings are therefore generally of the full complement type and have extremely long rollers of large diameter. To be able to accommod ate 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 neces sary alignment movements take place in bearings having a sphered shaft washer above the roller complement between the sphered shaft washer surface and a corres pondingly concave sphered screw spindle or pressure plate. The pressure plate can also be supplied by FV.


Where the housing washer is sphered the alignment movements are accommod ated below the roller complement between the housing washer and the sphered pressure plate.The pressure plate for these bearings is always supplied with the bearing.

FV produces many designs of screw- down bearing; they are tailored to meet the particular requirements of the application. 

A particularly popular design is that shown in fig 5.


The dimensions of taper roller thrust bear- ings are not standardised.


Taper roller thrust bearings with plane washers cannot accept any misalignment of the shaft with respect to the housing nor any errors of angle of the support surfaces in the housing and on the shaft.

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FV Bearings is a leading roller bearings manufacturer provides high quality and durable roller bearings for different industries such as automotive, aerospace, machinery, power plants, chemistry industry, agriculture and other fields.

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