Page 87 - Y-bearing-units

Y-bearings with a tapered
Fig. 11
bore
Y-bearings in the YSA 2-2FK series († fig. 11)
have a symmetrically extended inner ring on
both sides and a tapered bore (taper 1:12) ena-
bling them to be mounted on a standard adapter
sleeve in the H 23 series. The appropriate adapt-
er sleeve is not part of the bearing and must be 2
ordered separately.
Y-bearings with a tapered bore are equipped
with the rugged standard integral seal, fitted
with additional plain sheet steel flingers. The
outer ring has two lubrication holes as standard.
Mounting onto an adapter sleeve enables the
bearings to operate at higher speeds and run
more smoothly in applications where the direction
of rotation is constant or alternating.
Fig. 12 The SKF range, which comprises bearings
with bore diameters ranging from 25 to 65 mm,
fits adapter sleeves in the H 23 series for metric
shafts ranging from 20 to 60 mm († product
table on page 102). These bearings can also be
used on adapter sleeves in the HA 23, HE 23
and HS 23 series for inch shafts ranging from
3 /4 to 2 3 /8 inch († product table on page 104).

Y-bearings with a standard
inner ring
Y-bearings in the 17262(00)-2RS1 and
17263(00)-2RS1 series († fig. 12) with a
standard inner ring have normal tolerances for
the bearing bore diameter and are located on the
shaft using an appropriate interference fit. They
do not have any lubrication holes in the outer ring.
The only difference between these Y-bearings and
deep groove ball bearings in the 62 and 63 series
is the sphered outside surface of the outer ring.
These Y-bearings are suitable for applications
where the direction of the load alternates and
where smooth running is a key operational
parameter. These bearings can accommodate
heavier axial loads than Y-bearings of any other
design. They can also operate at the same speeds
as the corresponding sealed deep groove ball
bearings.
The SKF range comprises bearings for metric
shafts from 17 to 60 mm († product table on
page 106).

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