SPX FLOW 006-U3, Инструкция по эксплуатации, Страница: 83 / 136

Waukesha Cherry-Burrell
®
Brand Universal 3 Pump Maintenance
02/2021 95-03103 Page 83
Front Bearing Assembly
SPX FLOW PD Precision Pumps require bearing assemblies with
very tight internal tolerances. In fact, the internal tolerances of
“off-the-shelf” bearings can be many times larger than required.
Although they are considered in-spec in the bearing industry,
they can cause internal damage within an SPX FLOW PD Pump.
SPX FLOW’s proprietary bearing “MATCHING” process starts
with top quality bearing assemblies, then sorts, measures, pairs,
grinds and adds spacers to them to ensure the matched bearing
sets meet the required tight internal tolerances.
SPX FLOW bearings can be cross-referenced and appear to be
the same, but competitive bearings are omitting the Matching
process, which is imperative to achieve the required internal toler-
ances. Once a bearing set is matched, it must remain together as
a set for the life of the pump, in order to maintain the tight internal
tolerances.
NOTE: The following instructions cover the assembly of a six-
piece front bearing assembly. For a four-piece assembly, only
one spacer and cup is used.
1. Lubricate the front bearing area of the shaft (Figure 200, item
7, 8) with anti-seize. Place it upright in a hydraulic press with
the liquid end down.
2. Unwrap the front bearing assembly.
NOTE: DO NOT interchange the parts of one bearing
assembly with another. The parts are precisely matched
during manufacturing and must be installed as a matched
assembly. See Figure 201.
3. Lift the lower cone and roller assembly (Figure 202, item A)
out of the bearing stack and place it on the shaft with the
radius facing down. Press it onto the shaft until it is seated
against the shaft shoulder. Press only on the inner cone .
4. Place the inner spacer (Figure 203, item B) over the shaft
onto the lower cone and roller assembly.
5. Place the lower cup (item C) over the lower cone and roller
assembly, keeping the cup opening toward the assembly.
6. Place the outer spacer (item D) over the shaft and onto the
lower cup.
Figure 200 - Grease Shaft
7, 8
Figure 201 - Bearing assembly
A. Lower Cone / Roller Assembly
B. Inner Spacer
C. Lower Cup
D. Outer Spacer
E. Upper Cup
F. Upper Cone / Roller Assembly
Figure 202 - Press Lower Cone onto
Shaft
PD100-645
A
Figure 203 - Install Inner & Outer
Spacer and Lower Cup
PD100-646
C
B D