Speed reduction in a gear box is achieved using a worm and worm wheel. The worm wheel has 30 teeth and a pitch diameter of 210 mm. If the pressure angle of the worm is 20^o, what is the axial pitch of the worm?

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Speed reduction in a gear box is achieved using a worm and worm wheel. The worm wheel has 30 teeth and a pitch diameter of 210 mm. If the pressure angle of the worm is 20^o, what is the axial pitch of the worm?

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Greg · Answer 1 · 2022-10-21T17:40:47+0000

Right answer is (b) 22 mm

Explanation: m = 210/30 = 7

P = πm = 22/7 x 7

= 22 mm

Axial pitch = circular pitch of the worm wheel = πm.

Speed reduction in a gear box is achieved using a worm and worm wheel. The worm wheel has 30 teeth and a pitch diameter of 210 mm. If the pressure angle of the worm is 20^o, what is the axial pitch of the worm?

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