Flowserve S-series PolyChem - Manual (Page 43)

USER INSTRUCTIONS POLYCHEM S-SERIES ENGLISH 71569207 11-08
Page 43 of 52
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Figure 6-19: Flowserve PolyChem S-series 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
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 N/A 6
Greased for life - double shielded 3 6207-2ZC3 5306-A2ZC3 or 3306-A2ZC3 N/A 7
1/A
Sealed for life - double sealed 4 6207-2RS1C3 5306-A2RSC3 or 3306-A2RS1C3 N/A 7
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 N/A 6
Greased for life - double shielded 3 6310-2ZC3 5310-A2ZC3 or 3310-A2ZC3 N/A 7
2
Sealed for life - double sealed 4 6310-2RS1C3 5310-A2RSC3 or 3310-A2RS1C3 N/A 7
Oil bath/mist - open 1 6212-C3 5310-AC3 (AHC3) or 3310-AC3 7310-BECBY
Regreasable - single shielded 2 6212-ZC3 5310-AZC3 or 3310-AZC3 N/A 6
Greased for life - double shielded 3 6212-2ZC3 5310-A2ZC3 or 3310-A2ZC3 N/A 7
2“HD”
Sealed for life - double sealed 4 6212-2RS1C3 5310-A2RSC3 or 3310-A2RS1C3 N/A 7
Oil bath/mist - open 1 6309-C3 5309-AC3 (AHC3) or 3309-AC3 N/A 7
Regreasable - single shielded 2 6309-ZC3 5309-AZC3 or 3309-AZC3 N/A 7
Greased for life - double shielded 3 6309-2ZC3 5309-A2ZC3 or 3309-A2ZC3 N/A 7
B
Sealed for life - double sealed 4 6309-2RS1C3 5309-A2RSC3 or 3309-A2RS1C3 N/A 7
Oil bath/mist - open 1 6311-C3 5311-AC3 (AHC3) or 3311-AC3 N/A 7
Regreasable - single shielded 2 6311-ZC3 5311-AZC3 or 3311-AZC3 N/A 7
Greased for life - double shielded 3 6311-2ZC3 5311-A2ZC3 or 3311-A2ZC3 N/A 7
C
Sealed for life - double sealed 4 6311-2RS1C3 5311-A2RSC3 or 3311-A2RS1C3 N/A 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 periodically
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 1 750 rpm.
5. The codes shown are SKF codes. Inboard 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.
6.10.2 Wet end assembly
Three sleeve designs are utilized on
the PolyChem S-series pump. The style of sleeve
depends on the pump model/impeller. See section
6.7.2, Pump disassembly, for description. See Figure
6-20 for seal sizes.
Figure 6-20
Seal size
Pump model
mm in.
Group A 35 1.378
Group B 43 1.693
Group C 53 2.087
Group 1 34.93 1.375
Group 2 47.63 1.875
Group 2 “HD” 53.98 2.125
To ensure proper sealing between the rear cover [1220]
and the gland all PolyChem S-series pumps utilizes a
combination of Belleville washers [6541.5] and flat
washers [6541.4] to create a spring load. Care must be
taken to ensure that the concaved side of the Belleville
washer faces toward the rear cover. (Figure 6-21.)
Figure 6-21
Stud [6572.2] Washer [6541.4] Nut [6580.2]
Belleville washer [6541.5