Goulds Pumps AF (Axial Flow) (42"/1200mm/54/60"/66") LM/LMR Bearings - IOM" - Manual (Page 12)

12 AF (42-66) IOM
Shaft Sleeve – If packing is specified, a
replaceable wear sleeve is provided with the power
end. The sleeve is keyed to prevent rotation. The
stuffing box can also be modified to accept a
mechanical seal if required.
Impeller - The impeller is cast with (4) fixed vanes
at 0 or +5 degrees, CW or CCW rotation, and top
or end suction. The impeller bore is stepped for
easy assembly to the shaft. It is held in place with
a key, shaft washer, and bolts. It has a cover plate
and o-rings to prevent corrosion and allow for easy
impeller replacement. The impeller is dynamically
balanced (two plane) per ISO 1940 to a quality
grade G-16.
Shaft – The shaft is cantilevered into the elbow to
eliminate the need for internal bearings. It is sized
for minimal deflection, high critical speed, and
extreme corrosion resistance. The shafts are
stepped for easy assembly with the impeller. The
shaft comes with a replaceable sleeve when used
with stuffing boxes. Bearings - The inboard radial bearing absorbs shaft radial
loads and aligns the pump shaft. It is a spherical roller
bearing. The outboard thrust bearing absorbs impeller
thrust loads and comes as either back-to-back angular
contacts or a single taper roller bearing, depending on
pump size. Lubrication is by flood oil or grease, depending
on customer requirements.
Oil-Cooling (Optional ) – An oil-cooling coil is available on
all sizes, it is installed in the bottom of the bearing housing
and circulates water to cool the oil bath. Generally, it is
used when process temperatures cause excessive heat
build up in the bearing housing and/or bearings.
Configurations and Drives – The 42”, 1200mm, 54”, 60”,
and 66”pumps are usually gear driven and come on a
subbase as standard. They can also be pipe mounted with
a drive shaft to a motor on a separate subbase.
NAMEPLATE INFORMATION
Every Gould’s pump has a nameplate that provides
information about the pump, including hydraulic
characteristics. The nameplate for the AF is located on the
bearing housing. Note the format of the pump size:
Discharge X Suction - Impeller Diameter in inches or millimeters (Example 42” X 42”-42” or 1200mm X
1200mm-1200mm, see Fig. 1).
When ordering spare
parts you will need to identify pump model, size, serial
number, and the item number of required parts.
Information can be found in this manual.