Numerical - Minimum face width, given helix angle and normal module

Q.  What is the minimum face width required for a helical gear which has helix angle of 23o and normal module of 7?
- Published on 19 Oct 15

a. ≥ 64.72
b. ≥ 56.28
c. ≥ 33.35
d. ≥ 8.74

ANSWER: ≥ 64.72

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    Discussion

  • Sravanthi   -Posted on 28 Sep 15
    Given: Ψ = 23o & mn = 7

    Formula: Face width ≥ (1.15 π mn ) / sin Ψ

    Substituting the given values of Ψ & mn in the formula we get,

    Face width ≥ 64.72

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