Thrust Screw Down Tapered Roller Bearing
FV bearing offers two types of screw down bearings – types TTHDSV and TTHDSX. Both types consist of a full roller complement design without a conventional bore. Screw down tapered thrust bearings offer the highest capacity of the v-flat bearing types, but at a reduced speed capability.
Size ranges:
35 mm to 2940 mm (13.75 in. to 115.75 in.)
Design Attributes:
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While these bearings do not have conventional bores, they are provided with center inserts for attachment and lifting purposes.
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TTSV and TTSX type bearings achieve true rolling motion between the tapered rollers and both raceways, with no skidding or sliding at any point on the rolling surfaces.
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The flat raceway permits radial displacement without affecting the operation of the bearing.
Applications:
We engineered screw down bearings for use in applications that experience a wide range of operating conditions, including:
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Heavily-loaded extruders
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Cone crushers
Supplementary description
Tapered 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 respect 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 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 washer (fig 1) or the housing washer (fig 2).
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fig 1 |
fig 2 |
The necessary alignment movements take place in bearings having a sphered shaft washer above the roller complement between the sphered shaft washer and a correspondingly concave sphered screw spindle or pressure plate (fig 3). The pressure plate can also be supplied by FV.
fig 3
Where the housing washer is sphered, the alignment movements are accommodated below the roller complement between the housing washer and the 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 specific application.
