SKF - Rolling Bearings

Mounting
Fig. 14
the bearing († figs. 11 and 12) or a stop on
the shaft, which can be either a nut on a shaft
thread († fig. 13) or a plate attached to the
end of the shaft). Pumping oil into the hydraulic
nut displaces the piston axially with the
force needed for accurate and safe mounting.
Fig. 15
Oil injection method
With the oil injection method, oil under high
pressure is injected via ducts and distribution
grooves between the bearing and bearing seat
to form an oil film. This oil film separates the
mating surfaces and considerably reduces the
friction between them. This method is typical ly
used when mounting bearings directly on
tapered shaft seats († fig. 14). The necessary
ducts and grooves should be an integral
part of the shaft design. This method can also
be used to mount bearings on adapter or withdrawal
sleeves if they have been properly
prepared.
A spherical roller bearing mounted on a
withdrawal sleeve with oil ducts is shown in
fig. 15. Oil is injected between all mating surfaces
so that the withdrawal sleeve can be
pressed into the bearing bore as the bolts are
tightened.
H
279