The coil conductor itself is coated with insulating
materials of outstanding waterproof properties. Polypropylene insulation is
generally used for water tight insulated magnet wire for submersible motors, A
nylon sheath is used for mechanical protection over the Polypropylene
insulation layer. We use specially developed denatured Polypropylene which
offers very stable waterproof characteristics. The unique insulation structure
shown below is as a result of extensive development and has proven to be of a
far superior quality. Thus resulting in long insulation life under severe
F (260 C) Water Temperature
The motors operate with a flow rate O.5 ft/sec. (0.15 m/sec)
in water temperature up to 770 F (260C) without any derating
of horsepower. This 770 F (260 C) temperature is within
NEMA standards. For applications where water temperature is elevated, consult Pumps Unlimited for correct
application of motors. Motors can be provided for higher temperature
The high quality electrical grade silicone steel laminations
and proper design for allowance of voltage variation make up the high torque
qualities of the submersible motor.
The rotor balance ring (one on each end of the rotor) allows
for excellent dynamic balance for the rotating element of the motor.
Two carbon, water lubricated, bearings are used as guide
bearings. These have an extremely large surface area and results in extra
alignment supportless whipping and acts as a steady bushing.
Corrosion and Water Tight Protection
All main motor components are made of stainless steel:
including the can housing, shaft and bolts.
All submersible motors are manufactured and tested under the
most stringent quality control procedures. This assures that you receive a
motor that will give long service life and trouble free operation.
The well established KINGSBURY design thrust bearing creates
a wedge of water between the pivot shoe and carbon disc. Our innovative design
permits high thrust loads to be placed on the bearings while showing no
measurable wear after several years of severe duty operation. This allows for
long pumping life, virtual trouble free operation and low maintenance. For all
8" and 10" motors, the 1,000 lbs. maximum continuous up-thrust is
carried between the upper slide plate and the separate upthrust carbon bearing.
reliability of submersible motors depends upon their insulation
characteristics. We have carried out continuous research and development of
submersible motors for many years, drawing upon its total corporate technology.
These efforts have resulted in new patented water tight insulated magnet wire
having excellent insulation characteristics. This patented technology is being
applied to all water tight submersible motors. For the insulation material,
specially developed denatured polypropylene is applied over a special enamel
layer. An external nylon sheath is applied over this polypropylene layer for
extra mechanical protection. These three insulation barriers are applied to
copper conductors for complete insulation from the cooling fluid. This
guarantees that submersible motors will have an extremely long service life.
For Sales information, please contact us at: firstname.lastname@example.org
For service related issues, please contact
us at: email@example.com
Last Updated March 29, 2009 by Pumps Unlimited 19 Affonso
Drive, Carson City, Nevada 89706
(775) 246-0800, FAX (775) 246-0847