USER INSTRUCTIONS POLYCHEM GRP ENGLISH 71569132 12-04A
Page 41 of 52
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Both products contain finely ground PTFE particles in
an oil based carrier. They are supplied in a paste
form which is brushed onto the male pipe threads.
Flowserve recommends using one of these paste
sealants. Full thread length engagement is required
for all fasteners.
Refer to figure 6-2 for recommended bolt
torques.
6.10.1 Power end assembly
The Mark 3A design has an optional oil slinger. If the
slinger was removed during disassembly, install a
new slinger [2541]. (See figure 6-22.)
6.10.1.1 Bearing installation
Mounting of bearings on shafts must be done in a
clean environment. Bearing and power end life can
be drastically reduced if even very small foreign
particles work their way into the bearings. Wear
clean gloves.
Bearings should be removed from their protective
packaging only immediately before assembly to limit
exposure to possible contamination. After removing
the packaging they should only come in contact with
clean hands, fixtures, tools and work surfaces.
Figure 6-22
The chart shown in figure 6-23 gives the SKF part
numbers for bearings in Flowserve Mark 3 pumps.
Note that the term “inboard bearing”
refers to the
bearing nearest to the casing. “Outboard bearing”
refers to the bearing nearest to the motor. (See
figure 6-22.)
Figure 6-23: Flowserve Mark 3 bearings
Group Type of bearing
Inboard single row,
deep groove
5
Outboard double row, angular
contact, deep groove
5 & 9
Optional outboard duplex
angular contact
5
1
Oil bath/mist - open
1
6207-C3
5306-AC3 or 3306-AC3
7306-BECBY
Regreasable - single shielded
2
6207-ZC3
5306-AZC3 or 3306-AZC3
NA
6
Greased for life - double shielded
3
6207-2ZC3
5306-A2ZC3 or 3306-A2ZC3
NA
7
Sealed for life - double sealed
4
6207-2RS1C3
5306-A2RSC3 or 3306-A2RS1C3
NA
7
2
Oil bath/mist - open
1
6310-C3
5310-AC3 (AHC3) or 3310-AC3
7310-BECBY
Regreasable - single shielded
2
6310-ZC3
5310-AZC3 or 3310-AZC3
NA
6
Greased for life - double shielded
3
6310-2ZC3
5310-A2ZC3 or 3310-A2ZC3
NA
7
Sealed for life - double sealed
4
6310-2RS1C3
5310-A2RSC3 or 3310-A2RS1C3
NA
7
3
Oil bath/mist - open
1
6314-C3
5314-AC3 or 3314-AC3
7314-BECBY
Regreasable - single shielded
2
6314-ZC3
5314-AZC3 or 3314-AZC3
NA
6
Greased for life - double shielded
3
6314-2ZC3
5314-A2ZC3 or 3314-A2ZC3
NA
7
Sealed for life - double sealed
4
6314-2RS1C3
5314-A2RSC3 or 3314-A2RS1C3
NA
7
Notes:
1) These bearings are open on both sides. They are lubricated by oil bath or oil mist.
2) These bearings are pre-greased by Flowserve. Replacement bearings will generally not be pre-greased, so grease must be applied by
the user. They have a single shield, which is located on the side next to the grease buffer, or reservoir. The bearings draw grease
from the reservoir as it is needed. The shield protects the bearing from getting too much grease, which would generate heat. The
grease reservoir is initially filled with grease by Flowserve. Lubrication fittings are provided, to allow the customer to periodic ally
replenish the grease, as recommended by the bearing and/or grease manufacturer.
3) These bearings are shielded on both sides. They come pre-greased by the bearing manufacturer. The user does not need to regrease
these bearings. The shields do not actually contact the bearing race, so no heat is generated.
4) These bearings are sealed on both sides. They come pre-greased by the bearing manufacturer. The user does not need to regrease
these bearings. The seals physically contact and rub against the bearing race, which generates heat. These bearings are not
recommended at speeds above 1 750r/min.
5) The codes shown are SKF codes. Inb
oard and outboard bearings have the C3, greater than “Normal” clearance. These clearances
are recommended by SKF to maximize bearing life.
6) Regreasable - single shielded bearings are not available in the duplex configuration; however, open oil bath-type bearings can be used
for the regreasable configuration. These bearings must be pre-greased during assembly. Lubrication fittings are provided, to allow the
user to periodically replenish the grease, as recommended by the bearing and/or grease manufacturer.
7) Not available.
8) All bearing configurations are supplied only with steel cages
9) SKF - the 5300 and 3300 bearing series are identical and therefore can be used interchangeably.
