ITT GOULDS PUMPS 3600 i-FRAME, Installation, Operation And Maintenance Manual

Page: 95 / 147

Rotor
Allowable runouts of the fully assembled rotor are listed in the Shaft and rotor runout requirements table.
Table 2: Shaft and rotor runout requirements
Characteristic Requirement
Flexibility factor, L
4
/D
2
>1.9x10
9
mm | >3.0x10
6
in.
Allowable shaft runout, TIR 40 µm
(0.0015 in.)
Component fit to shaft Interference
Allowable rotor radial runout, TIR* 60 um
(0.0025 in.)
*Total indicated runout of impeller hubs and sleeves
Figure 67: Fully assembled rotor
6.5.3 Bearings inspection
Condition of bearings
Do not reuse bearings. The condition of the bearings provides useful information on operating conditions
in the bearing frame.
Checklist
Perform these checks when you inspect the bearings:
• Inspect the bearings for contamination and damage.
• Note any lubricant condition and residue.
• Inspect the ball bearings to see if they are loose, rough, or noisy when you rotate them.
• Investigate any bearing damage to determine the cause. If the cause is not normal wear, correct
the issue before you return the pump to service.
Replacement bearings
Replacement bearings must be the same as, or equivalent to, those listed in this table.
NOTICE:
Thrust bearings must have machined bronze cages (retainers).
Table 3:
Pump size Radial Bearing Thrust bearing
Bearing housing
bore mm | in.
Shaft turn mm | in.
24F 6311 7311
120.033 | 4.7257 55.016 | 2.1660
120.012 | 4.7249 55.004 | 2.1655
25G 6312 7314
130.038 | 5.1196 60.015 | 2.3628
130.014 | 5.1187 60.003 | 2.3623
6.5 Preassembly inspections
Model 3600 i-FRAME API610 11th Edition / ISO 13709 2nd Edition to current API BB3 Multi-Stage, Axially Split Installa-
tion, Operation, and Maintenance Manual 93