Product Manual

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Types of Mounts
Rigid base is bolted, welded, or cast on main
frame and allows motor to be rigidly mounted
on equipment.
Resilient base has isolation or resilient rings
between motor mounting hubs and base to
absorb vibrations and noise. A conductor is
imbedded in the ring to complete the circuit for
grounding purposes.
NEMA C face mount is a machined face with
a pilot on the shaft end which allows direct
mounting with the pump or other direct cou-
pled equipment. Bolts pass through mounted
part to threaded hole in the motor face.
NEMA D flange mount is a machined flange
with rabbet for mountings. Bolts pass through
motor flange to a threaded hole in the mounted
part. NEMA C face motors are by far the most
popular and most readily available. NEMA D
flange kits are stocked by some manufacturers,
including LEESON.
Type M or N mount has special flange for
direct attachment to fuel atomizing pump on
an oil burner. In recent years, this type of
mounting has become widely used on auger
drives in poultry feeders.
Extended through-bolt motors have bolts
protruding from the front or rear of the motor
by which it is mounted. This is usually used on
small direct drive fans or blowers.