SKF - Rolling Bearings

7 Tapered roller bearings
Matched bearings
Matched bearings († fig. 6) can be supplied
for bearing arrangements where the load carrying
capacity of a single bearing is in adequate,
or where the shaft has to be located
axially in both directions with a specific axial
clearance or preload. The bearings and ring
spacer(s) are matched in production and delivered
as a set. When mounted, the radial
load is evenly distributed between the
bearings.
Depending on the requirements, matched
bearings can be supplied in face-to-face, backto-back,
or tandem arrangements († fig. 7).
The matched bearings listed in this catalogue
constitute the basic SKF assortment.
Other matched bearings can be supplied on
request.
Matched bearings arranged face-to-face
Matched bearings arranged face-to-face
(† fig. 7) have load lines that converge
toward the bearing axis. Therefore, the
arrangement can accommodate a limited
amount of misalignment. Axial loads in both
directions can be accommodated, but only by
one bearing in each direction.
The bearing set is supplied with an intermedi
ate outer ring spacer.
Matched bearings arranged back-to-back
Matched bearings arranged back-to-back
(† fig. 7) have load lines that diverge toward
the bearing axis to provide a relatively stiff
bearing arrangement that can also accommo­
Fig. 6
date tilting moments. Axial loads in both
directions can be accommodated, but only by
one bearing in each direction.
The bearing set is supplied with intermediate
inner and outer ring spacers.
Matched bearings arranged in tandem
Matched bearings arranged in tandem
(† fig. 7) have load lines that are parallel.
Radial and axial loads are shared equally by
the bearings. This arrangement is used when
the load carrying capacity of a single bearing is
inadequate. However, matched bearings
arranged in tandem can accommodate axial
loads in one direction only. If axial loads act in
both directions, a third bearing, adjusted
against the tandem pair, must be added.
Fig. 7
Face-to-face
arrangement
Back-to-back
arrangement
Tandem
arrangement
802