Bearings Inspection - ITT 3610 i-FRAME Manual

6.5 Preassembly inspections
Shaft inspection
NOTICE:
Do not use shaft centers for the runout check as they may have been damaged during the re-
moval of the bearings or impeller.
122
Figure 65: Shaft inspection
Shaft surface check
Check the shaft surface for damage. Replace the shaft if it is damaged beyond reasonable repair.
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
Flexibility factor, L
Allowable shaft runout, TIR
Component fit to shaft
Allowable rotor radial runout, TIR* 76 micrometers | 0.003 in.
*Total indicated runout of impeller hubs and sleeves
122
Figure 66: 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.
88 3610 i-FRAME API 610 11th Ed/ISO 13709 2nd Ed, API Type BB1 Single-Stage, Axially-Split, Between-Bearing IOM
Requirement
4 2 9
/D >1.9x10 mm | >3.0x10
25 micrometers | 0.0010 in.
Clearance
101
124
130
6
in.