Taper Roller Thrust Bearings
Taper
roller thrust bearings enable axially very compact bearing arrangements and
capacity to carry very heavy axial loads, are insensitive to shock loads and
are stiff.
Single direction taper roller thrust bearings are used for
the kingpin bearing arrangement of commercial vehicles. They have a full
complement of rollers and are held together by a sheet steel cover. Most of
these bearings are fitted with rubbing seals of wear and oil-resistant
nitrile rubber.
Bearings with shaft and housing washers of same dimensions have a tapered
raceway and one retaining flange. These bearings suitable for very heavy
axial loads
Certain bearings have a shaft washer with tapered raceway and retaining
flange. These bearings can accept minor eccentricities of the shaft with
respect to the housing bore without much influence on bearing performance.
Bearings are fitted with a roller-centered cage.
Double direction taper roller thrust bearings are used
with multi-row cylindrical roller bearings in rolling mill applications.
Those bearings with a plane shaft washer are able to accommodate slight
eccentricities of the shaft with respect to the housing bore. A spacer
sleeve is arranged between the two housing washers.
The double direction taper roller thrust bearings with tapered raceways on
the shaft and housing washers have a higher axial load carrying capacity
than the ones with a plane shaft washer. They are usually mounted with a
loose fit on the roll neck. The shaft washer of most bearings has one or two
locating slots.
Taper roller thrust bearings accommodate extremely heavy
axial loads and permit angular movement of the screw spindle with respect to
the support. These bearings are full complement type and have extremely long
rollers with large diameter
Tolerance - The bore and outside diameter tolerances of
SKF single and double direction taper roller thrust bearings are produced,
with very few exceptions, with tolerances to ISO 199-1979. The tolerances
for the height and the running accuracy differ. Details of the values for a
particular bearing as well as the tolerances of screw-down bearings will be
sent on request.
Cages - Taper roller thrust bearings which do not have a
full complement of rollers are fitted with machined brass cage, a pin-type
steel cage, or a steel window-type cage.
