Motor head
NEMA standard mounting dimensions utilizing four, 5/16 ”x 24 UNF threaded
studs
Over temperature protection
Over temperature protection provided with bi-metallic overloads
Thrust bearing
Heavy-duty 900 lb.Mitchell-type thrust bearing capacities exceeding NEMA
ratings
Cable
XLPE cross-linked polyethylene
Shaft seal
Nitrile radial lip/bellows
Corrosion resistance
High-grade materials provide high corrosion resistance.
AISI 304 (DIN W.-Nr.1.4301) stainless steel-standard, For aggressive water
the motor can be supplied with Viton® elastomers vs. standard NBR
Motor fill fluid
SML2 fluid filled motor design provides bearing lubrication
Low motor temperature
Due to a unique thin rotor can and close rotor to stator tolerance in the
MS motors, internal rotor losses are minimized. Large cooling surfaces
and internal fill fluid
circulation provides efficient heat transfer resulting in cooler operating
temperatures. Lower motor temperature means longer lifetimes.
Voltage tolerance
To assure adequate voltage is applied to the motor, Grundfos recommends a
maximum of 5% cable loss. Supplying the correct voltage to the motor
ensures proper starting torque and cooler operating temperatures are
achieved.
4" Submersible Deep Well
Motors
