+1 vote
in Machine Kinematics by (38.0k points)
Twenty degree full depth involute profiled 19-tooth pinion and 37-tooth gear are in mesh. If the module is 5 mm, the centre distance between the gear pair will be

(a) 140 mm

(b) 150 mm

(c) 280 mm

(d) 300 mm

This question was posed to me by my college professor while I was bunking the class.

This intriguing question comes from Standard Spur Gears topic in division Toothed Gearing & Gear Trains of Machine Kinematics

1 Answer

0 votes
by (106k points)
Right option is (a) 140 mm

The explanation is: Centre distance = D1 + D2/2 = mT1 + mT2/2 = 5(19 + 37)/2

                           = 140 mm.

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