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AGMA 6009-A00 Document Information:
Title
Standard for Gearmotor, Shaft Mounted and Screw Conveyor Drives
American Gear Manufacturers Association
Publication Date:
Jan 1, 2000
Scope:
This standard applies to gearmotors, shaft mounted and screw conveyor
drives defined as enclosed
gear drives having spur or helical gearing, alone or in combination
with straight bevel, spiral
bevel or worm gearing. The purpose of this standard is to define a
rating and selection practice
for these gear drives. Users of this standard are expected to have had
experience in the field of
gearing and mechanical drive systems.
Gearmotors
A gearmotor is defined as an enclosed gear drive in combination with
an electric motor of 1/8 HP or
larger, the frame of one supporting the other, with the motor shaft
common or directly coupled to
the input shaft and parallel, concentric, or at a right angle to the
output shaft. The output shaft
may be either solid or hollow.
Shaft mounted drives
A shaft mounted drive is defined as a gear drive with a specific
nominal output shaft bore size in
accordance with this standard to a maximum of 6.5 inches.
Screw conveyor drives
A screw conveyor drive is defined as a gear drive with specific
mounting and drive shaft dimensions
in accordance with this standard.
Limitations
This standard is applicable to gear drives having single or multiple
stage gearing with pitch line
velocities not exceeding 7000 ft/min for spur and helical gearing and
6000 ft/min for straight
bevel, spiral bevel and wormgearing, and component speeds not
exceeding 4500 rpm for helical, spur,
straight bevel and spiral bevel gearing and 3600 rpm for wormgearing.
Wormgearing operating at
sliding velocities greater than 2000 ft/min may require special
lubricants, pressurized systems or
both.
Exceptions
This standard does not cover epicyclic gear drives. This standard does
not cover the rating of
spur, helical or bevel gears due to wear or scuffing. The design and
rating of the electric motor
is beyond the scope of this standard.
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