1.1 Applicability
This standard applies to the rating and design of
enclosed cylindrical wormgear speed reducers and
gearmotors having either solid or hollow output
shafts and single or multiple reductions, including
other types of gearing used in conjunction with
cylindrical wormgearing. The rating and design
considerations contained in this standard are valid
for rotational speeds not greaterthan 3600 rpm and
sliding velocities at the mesh of not more than 6000
Wmin (30 d s ) .
The knowledge and judgment required to evaluate
the various rating factors come from years of accumulated
experience in designing, manufacturing,
and operating gear units. Empirical factors given in
this standard are suited to the particular use shown.
This standard is intended for use by the experienced
gear designer, capable of selecting reasonable
values for the factors. It is not intended for use
by the “engineering public at large.”
No limitation is placed on the method of producing
the worms and gears, but the tooth form of the gear
must be conjugate to the thread form of the worm.
See AGMA 341.02, Design of General Industrial
Coarse-Pitch Cylindrical Worm Gearing.
1.2 Exceptions
This standard does not apply to cylindrical
wormgear reducers which are designed or used as
speed increasers.
This standard covers only the pitting resistance and
wear rating of wormgearing, and does not cover any
strength rating method.
1.3 System considerations
This standard does not attempt to address
complete drive systems, torsional vibration, criiical
speeds, or other types of vibrations which may
affect operation of enclosed cylindrical worm gear
reducers.
AGMA 6034-B92-1992 history
1992AGMA 6034-B92-1992 Practice for Enclosed Cylindrical Wormgear Speed Reducers and Gearmotors