The formulas presented in this standard contain terms whose individual values can vary significantly
depending on application, system effects, accuracy, and manufacturing method. Proper evaluation of these
terms is essential for realistic rating. The knowledge and judgment required to properly evaluate the various
rating factors come primarily from years of accumulated experience in designing, testing, manufacturing, and
operating similar gear units. The detailed treatment of the general rating formulas for specific product
applications is best accomplished by those experienced in the field.
AGMA 6034–A87 was a revision of AGMA 440.04 — 1 971 , and in addition contained information for cylindrical
wormgear hollow output shaft speed reducers and for cylindrical wormgear gearmotors previously contained
in AGMA 442.01 — 1 965 and 461 .01 — 1 966. These two standards have been withdrawn.