packing and (2) lantern rings to seal the shaft area. (2) flush ports are provided for lubrication. The inner-
most flush port is used with process flow and the outermost port for water flush. A special alternate pack-
ing arrangement is available that includes a throat bushing and additional ring of packing near the gland
(see the attached addendum). A gland is used for packing adjustment.
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 assem-
bly 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 an-
gular contacts or a single taper roller bearing, depending on pump size. Lubrication is by flood oil.
Oil Cooling (Optional)
An oil-cooling coil is available on all sizes, it is installed in the bottom of the bearing housing and circu-
lates 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.
3.2 Nameplate information
Important information for ordering
Every pump has nameplates that provide information about the pump. The nameplates are located on
the bearing housing.
When you order spare parts, identify this pump information:
•
Model
•
Size
•
Serial number
•
Item numbers of the required parts
Refer to the nameplate on the bearing housing for most of the information. See Parts List for item num-
bers.
3.2 Nameplate information
Model AF (42"/1200mm/54"/60"/66") LM/LMR Bearings Installation, Operation, and Maintenance Manual
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