Rubber seating rings
Rubber seating rings in the RIS 2 series
(† fig. 6) are primarily intended to “cushion”
SKF ConCentra ball bearings when mounted
in stamped steel plummer block housings.
Located between the bearing outer ring
and housing bore, they dampen vibrations
and noise and enable the bearings to be
displaced slightly in their housings to
accommodate minor variations in shaft
length or misalignment.
For some applications rubber seating
rings can be fitted to the SKF ConCentra ball
bearing outer rings, to convert SKF ConCen-
tra ball bearings to support rollers, and
serve as tyres, to run quietly and protect the
counter surface († fig. 7).
Fig. 6 Fig. 7
SKF ConCentra ball bearing units with a
flanged housing metric sizes only, have a
recess († fig. 3), at the back for accurate
positio ning, on an appropriate centring ring
provided by one of the following methods:
machining the wall accordingly (• † fig. 4)
Fig. 3
Fig. 4 Fig. 5
attaching an appropriate centring ring to •
the wall († fig. 5)
A centring ring relieves the attachment bolts
of radial loads.
13
B
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