Goulds Pumps 7200CB - IOM - Manual (Page 87)

Maintenance
Characteristic Requirement
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
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 4: Model 7200CB ball bearing fits
Bearing numbers are based on SKF/MRC designations.
Radial bearing Thrust bearing Bearing housing Shaft turn in (mm)
bore in (mm)
6216 7313/BECBM 5.5118 (140.00) Thrust Radial
5.5128 (140.03) 2.5597 (65.02) 3.1502 (80.02)
2.5592 (65.00) 3.1497 (80.00)
6313 7313/BECBM 5.5118 (140.00) 2.5597 (65.02)
5.5128 (140.03) 2.5592 (65.00)
6314 7314/BECBM 5.9055 (150.00) 2.7565 (70.02)
5.9065 (150.03) 2.7560 (70.00)
Bearing housings
Perform these checks when you inspect the bearing housings:
• Check that the bearing housings are very clean, with no burrs.
• Remove all loose and foreign material.
• Check the bearing housing bores against the values in the Ball bearing fits table.
• Repair or replace housings as necessary.
Model 7200CB, API Type BB5 Barrel Multistage / ISO 13709 2nd Edition / API 610 11th Edition Installation, Operation, and 85
Maintenance Manual