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Spiral Bevel Gear Tooth Contact
Section G
The illustration shown below is intended as a reminder to those who are unfamiliar with
the terminology applied to Spiral Bevel Gear Teeth
Convex Flank Concave Flank
The markings on a crownwheel which is correctly meshed with the pinion should
resemble those shown on the illustration below:-
Although the contact point on both flanks of the teeth may vary slightly, generally
speaking when correctly setup the markings on both the convex and concave flanks will
be in the centre of the tooth form and can still be considered to be correct if, on both
flanks, the markings are towards the toe or if crossed slightly e.g. towards the toe on the
convex flank and the heel on the concave flank or vice-versa.