Milnor 42044SR2 Mechanical Parts And Service Download

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Pellerin Milnor Corporation

7. Calculate and record the final internal clearance by deducting the “Clearance Reduction” for

your bearing (see

Table 24

) from the measured clearance. For example, if you measured .004

and the clearance reduction is .001 to .002, then the final internal clearance should be between
.002 and .003.

8. Hand pack the bearing with grease by rotating the inner race and rollers, forcing grease be-

tween all rollers.

NOTE:

The bearing will be set into position in Step 9. If both front and rear bear-

ings are being installed, the rear (clean side on Staph Guard

models) bearing should

be set in position first because it is the fixed bearing.

9. Set the bearing into the housing (with the taper facing the proper direction) and seat the bear-

ing using the bearing setting fixture. This fixture is installed in similar fashion to the seal
sleeve setting fixture. If you have just set the rear bearing and the front bearing housing is yet
to be installed, leave the bearing setting fixture in place for now.

10. If you have just set the rear bearing and the front bearing housing is yet to be installed, repeat

all steps in bearing housing installation, measuring unmounted clearance and setting bearing,
for the front bearing and housing. The bearing setting fixture should not be removed from the
rear housing until it is needed to seat the front bearing. This will prevent rear bearing compo-
nents from being pushed out of position by the shaft as the front housing components are
seated. Remove the bearing setting fixture from the front housing once the bearing is seated.

Tightening Bearing(s) (Front and/or Rear)

BNWVUM02.T05 0000278718 A.3 A.5 3/12/20 11:54 AM Released

1. Once both bearings are seated, or if only one bearing was replaced, install the bearing lock

washer(s) and lock nut(s). Use a hammer and a metal drift as shown in

Figure 35

, to tighten

the lock nut.

It is imperative to only tap lightly and to assure that metal chips from the

drift or lock nut do not fall off and contaminate the bearing.

If both bearings are being

tightened, work between the front and rear bearings and turn the basket by hand periodically,
while tightening the lock nut(s).

2. After tightening the bearing(s) onto the tapered shaft, check the internal clearance as pictured

Figure 36

, by working a feeler gauge between the outer race and a roller of the outer row

then between the outer race and a roller of the inner row.

NOTE:

Sometimes, when setting the bearings, all the load is taken by only one row

of rollers (although the load would quickly equalize on both rows after the machine
has run for only a few minutes). If all the load is taken by one row, you will get an er-
roneous clearance reading. It is therefore, necessary to use the feeler gauge to measure
the

clearance of both rows of rollers

. With the bearing in place on the machine it is

admittedly rather difficult to get a feeler gauge back past the first row of rollers to
measure the second

but it must be done

3. If one row of rollers is tight but the other has measurable clearance, tap lightly on the end of

the shaft nearest the tight row of rollers to cause the shaft to shift axially and equalize the roll-
er loading. Adjust the bearing tightness to achieve the internal clearance previously
calculated.

Bearing Assemblies