Goulds Pumps HS - IOM - Manual (Page 21)

BEARING FRAME ASSEMBLY
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
LUBRICATION AND CARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
INSTALLING A BEARING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
NORMAL BEARING TEMPERATURE . . . . . . . . . . . . . . . . . . . . . . 17
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
GENERAL
The inboard of lower bearing is an angular contact ball
bearing with high thrust capacity and the outboard or
top bearing is a high radial capacity ball bearing.
Grease is the standard lubricant, but bearing assemblies
can be furnished for oil lubrication.
BEARING LUBRICATION AND CARE
NOTE: The shaft seals (332) at each bearing should
be oiled with a few drops of #20 or #30 oil before the
pump is started to insure lubrication of the seal lip
while the seal is “running in."
GREASE LUBRICATION
1. When the pump is furnished with grease lubrication, a
quality bearing grease equivalent to Mobilux #2 should
be used to insure long bearing life.
Grease lubricated pumps are assembled with the
bearings hand-packed with grease at the factory and
should be allowed to run for eight hours before any
grease is added. The suggested interval for adding a
small amount of grease is five hundred (500) hours;
however, the operating conditions and experience of
the customer with other equipment can be used to
establish a more suitable lubrication schedule for the
particular application.
Adding excessive amounts of grease will increase the
bearing temperature and shorten the lubricating life of
the grease (See Fig.W14).
OIL LUBRICATION
2. When the pump is furnished with oil lubrication, a
high quality bearing oil should be used to insure long
bearing life. PUMPS FURNISHED FOR OIL
LUBRICATION ARE SHIPPED WITHOUT OIL.
ADD OIL UNTIL THE LEVEL IS UP TO THE OIL
LEVEL LINE BEFORE THE UNIT IS STARTED. If
too much oil is added, there will be excessive heat
generated in the bearings and there may be leakage
from the shaft seals. We recommend a commercial oil
such as Mobil D.T.E., or B.B., or equal. However, a
good grade of non-detergent oil of #30 wgt. is usually
satisfactory. The oil should have a minimum viscosity
of 100 Sec. Saybolt at the normal operating
temperature.
For normal operating conditions, change the oil at least
once a year and thoroughly flush the bearings. If the
bearing assembly is exposed to dirty or moist
conditions, the oil should be changed more often.
See Fig.W17.
HS IOM 5/08
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