NTN - Plummer Blocks

Handling the Plummer Blocks and Bearings
9.3 Installation of the bearing and associated
components
Once careful checking is complete, install the bearing
and associated components. For the positional
relationship, see Fig. 9.5.
Fig. 9.6
Fig. 9.5
When a bearing is installed onto a shaft or into a
housing, do not directly hit its end face with a hammer
or drift as shown in Fig. 9.6. Otherwise, its design
performance can be lost. Always evenly exert force
around the entire bearing ring face. Also, do not apply
force to one bearing ring (for example, outer ring) as in
Fig. 9.7 to convey the force via the rolling elements to
the other bearing ring (inner ring) to install the latter.
Otherwise, a dent mark or other damage can occur on
either or both rings.
Fig. 9.7
When installing a cylindrical bore bearing, whose
interference is relatively small, its whole inner ring can
be uniformly press-fitted at an ordinary temperature as
illustrated in Fig. 9.8. Usually, the inner ring is pressfitted
by tapping the sleeve with a hammer. However,
when many bearings must be installed at a time, a
mechanical or hydraulic press will be helpful.
When installing a non-separable bearing to the shaft
and housing at a time, apply a press-fitting force to
both the inner and outer rings by using a pressure
distribution pad as in Fig. 9.9.
Fig. 9.8 Press-fitting the inner ring
Fig. 9.9 Simultaneous press-fitting of the inner and outer rings
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