Page 60 - Y-bearing-units

Mounting instructions

Mounting instructions
for Y-bearing plummer
block units
with a cast housing and an adapter sleeve

1 Mount any components that are on the
shaft between the two Y-bearing units.
2 Determine the position of the adapter
sleeve on the shaft († fig. 1).
3 Remove the nut and the locking washer
from the adapter sleeve († fig. 2).
4 Wipe the preservative from the bore and
outside surface of the sleeve.
5 Expand the adapter sleeve slightly by
inserting a screwdriver in the slot of the
sleeve and slide the adapter sleeve into
position on the shaft († fig. 3).
6 Slide the Y-bearing plummer block unit up
onto the adapter sleeve with the large end of
the tapered bore leading, but do not push it.
7 Install the locking washer and screw the
lock nut onto the adapter sleeve until the
Y-bearing unit is firmly in position on the
sleeve.
8 Further tighten the lock nut using one
of the following:
– a hook spanner in the HN series to a
tightening angle of about 70° († fig. 4)
– a TMHN lock nut spanner to a tightening
angle of about 70°
– a torque wrench to the tightening torque
indicated in table 2 on page 55
Make sure that while tightening the nut, the
sleeve does not rotate on the shaft.
9 Lock the nut in position by bending down a
tab on the locking washer in one of the slots
provided around the circumference of the
nut († fig. 5).
10 Mount the other Y-bearing plummer block
unit on the other end of the shaft, following
steps 2 through 9.
11 Position the Y-bearing units on their support
surfaces. Fit the attachment bolts or nuts
but do not tighten them.
12 Carefully align both Y-bearing units, using
the shaft and, if possible, turn it a few times.
Then tighten the attachment bolts or nuts.
13 If applicable, snap the end cover(s) into
place.

58