Goulds Pumps ANSI FAMILY IOM (ATEX Compliant) - IOM - Manual (Page 141)

APPENDIX VII-2
Duplex Angular Contact Bearing Installation Instructions
1. Inspect the shaft (122) to ensure that it is clean,
dimensionally correct, and is free of nicks, burrs,
etc. (Fig. VII-1).
2. Lightly coat the bearing seating with a thin film of oil.
3. Remove the bearings (112) from their packaging.
4. Wipe the preservative from the bearing (112) bore
and outer diameter.
5. Use an induction heater with a demagnetizing
cycle to heat both bearings (112) to an inner ring
temperature of 230 °F (110 °C).
6. Place both bearings (112) on the shaft (122) with
the large outer races together (back to back).
l
! CAUTION
Duplex bearings are mounted back to back.
Make sure orientation of bearings is correct.
s
! WARNING
Wear insulated gloves when using a bearing
heater. Bearings will get hot and can cause
physical injury.
7. Position the bearings (112) on the shaft (122)
against the shoulder and snug the locknut (136)
against the bearings until they are cool. The
locknut prevents the bearings from moving away
from the shaft shoulder as they cool. It is best to
rotate the outer bearing rings relative to each
other as they are placed on the shaft to assure
good alignment.
8. Remove bearing locknut (136) after bearings
(112) have cooled.
9. Place lockwasher (382) on shaft (122). Place
tang of lockwasher in keyway of shaft. (Fig. VII-2).
10. Thread locknut (136) onto shaft (122). Tighten
locknut one-eighth (1/8) to one-quarter (1/4) turn
beyond snug. Bend any tang of lockwasher (382)
into a slot of locknut.
NOTE: Tighten locknut if necessary to align the
closest tab of lockwasher with slot on locknut,
but do not overtighten. Refer to Table VII-2 for
maximum locknut torque.
ANSIFAM IOM - 5/08
139
8
Fig. VII-1
Fig. VII-2