Numerical - Face width of worm gear

Q.  A worm gear pair is designated as 1/30/10/8. What is the face width of the worm gear?
- Published on 23 Sep 15

a. 30 mm
b. 53.07 mm
c. 58.4 mm
d. 62.3 mm

ANSWER: 58.4 mm

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    Discussion

  • Sravanthi   -Posted on 01 Oct 15
    Formula: Face width (b) = [2m √q + 1] or 0.73 dw
    Larger value is selected as the face width of worm gear

    b = 2 x 8 √10 + 1
    = 53.06 mm
    or

    dw = mxq = 8 x 10 = 80 mm
    b = 0.73 x 80
    = 58.4 mm

    58.4 mm > 53.06 mm
    Therefore, the larger value 58.4 is the face width of worm gear

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