The face load factor K Hβ , which in rating equations represents the load distribution over the common face
width in meshing gears, is one of the most important items for a gear strength calculation. In the
international standard for cylindrical gear rating, the ISO 6336-1 [1 ], using method C, some formulas are
proposed to get a value for this factor. But as the formulas are simplified, the result is often not very
realistic. Also AGMA 2001 (or AGMA 21 01 ) [2] proposes a formula for K Hβ , different from ISO 6336, but
again not always appropriate. Therefore a note in AGMA stipulates, that “it may be desirable to use an
analytical approach to determine the load distribution factor”.
In the last edition of ISO 6336 (2006), a new annex E was added: “Analytical determination of load
distribution”. This annex is entirely based on AGMA 927-A01 [3]. It is a well-documented procedure to get
a direct and precise number for the face load factor.

Share on Facebook

Post on X

Follow us

Save