Question

what is the difference between parallel and hellicle​

Answer 1

Answer:

Unlike spur gears that have straight teeth parallel to the gear axis, helical gears have teeth in helical form that are cut on the pitch cylinder. Although helical gears are commonly used for parallel shafts like spur gears, it can also be used for perpendicular but non-intersecting shafts.

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Answer 2

Answer:

Hi buddy

Explanation:

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