A herringbone speed reducer consist of 20 teeth pinion driving a 100 teeth gear. The normal module of gear is 2mm. The face width of each half is 30mm and Lewis factor is 0.4. Calculate the material constant K if surface hardness is 400BHN.

1.25 N/mm¬¨¬®‚Äö√¢¬ß

4.05 N/mm¬¨¬®‚Äö√¢¬ß

3.25N/mm¬¨¬®‚Äö√¢¬ß

A herringbone speed reducer consist of 20 teeth pinion driving a 100 t

1.	A herringbone speed reducer consist of 20 teeth pinion driving a 100 teeth gear. The normal module of gear is 2mm. The face width of each half is 30mm and Lewis factor is 0.4. Calculate the material constant K if surface hardness is 400BHN.
A.	1.25 N/mm¬¨¬®‚Äö√¢¬ß
B.	4.05 N/mm¬¨¬®‚Äö√¢¬ß
C.	3.25N/mm¬¨¬®‚Äö√¢¬ß
D.	2.56N/mm
Answer» D. 2.56N/mm

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A herringbone speed reducer consist of 20 teeth pinion driving a 100 teeth gear. The normal module of gear is 2mm. The face width of each half is 30mm and Lewis factor is 0.4. Calculate the material constant K if surface hardness is 400BHN.

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