Product Manual

At left, a quill-style input worm gear reducer uses a hollow input shaft and a
shallow mounting flange. At right, extended mounting flange accommodates a
solid-shaft to solid-shaft input with a flexible coupling joining the two shafts.
Gearmotors
An electric motor combined with a gear reducer creates a gearmotor.
In sub-fractional horsepower sizes, integral gearmotors are the rule –
meaning the motor and the reducer share a common shaft and cannot
be separated. For application flexibility and maintenance reasons,
a larger gearmotor is usually made up of an individual reducer and
motor coupled together. This is most often accomplished by using a
reducer having a NEMA C input flange mated to a NEMA C face motor.
LEESON uses the term Gear+Motor
™
for its separable reducer and
motor packages.
-77-
Three-phase NEMA C face AC
motor combined with flanged
worm gear reducer results in a
“workhorse” industrial gear-
motor. This straightforward
mounting approach is common
with motors ranging in sizes
from fractional through 20 HP
and larger.