# Numerical - Dynamic factor, given sum of errors

Q.  What is the deformation or dynamic factor if sum of errors on meshing teeth of steel pinion and gear is 32 x 10-3 mm?
- Published on 19 Oct 15

a. 284.8 N/mm
b. 300.23 N/mm
c. 320.5 N/mm
d. 368 N/mm

#### Discussion

• M.waqas   -Posted on 09 Aug 17
Really good page
• SATYAM    -Posted on 28 Sep 16
For steel and pinion gears tooth form factor (K) is 0.111 and modulus of elasticity for pinion and gear is 207 x 103 N/mm2.
Substituting these values in formula for deformation factor

C = K.e [(Ep x Eg ) / (Ep + Eg )]
C = 11500e

Therefore substituting value of e = 32 x 10-3, we get
C = 368 N/mm
• RAHMATALI   -Posted on 04 Aug 16
Hiii
• Sravanthi   -Posted on 25 Sep 15
For steel and pinion gears tooth form factor (K) is 0.111 and modulus of elasticity for pinion and gear is 207 x 103 N/mm2.
Substituting these values in formula for deformation factor

C = K.e [(Ep x Eg ) / (Ep + Eg )]
C = 11500e

Therefore substituting value of e = 32 x 10-3, we get
C = 368 N/mm

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