Consider the following statements: The axis of spiral bevel gear are non-parallel and intersecting. 1) The most common pressure angle for spiral bevel gear is 20° 2) The most common spiral angle for spiral bevel gear is 35. 3) Spirals bevel gears are generally interchangeable. 4) Spirals are noisy and recommended for low speeds of 10 m /s. Which of the above statements are correct?

1 and 4
1 and 2
2 and 3
3 and 4

LohaHridoy

4 views

2025-01-04 04:42

1 Answers

AhmedNazir

Option 2 : 1 and 2

Explanation:

Spiral bevel gears are used to connect two intersecting shafts. Spiral bevel gears have teeth inclined at an angle of the face of the bevel. Spiral gears have a spiral angle of 35° usually and the pressure angle varies from 14.5° to 20°.

Spiral gears offer the following advantages

There is a gradual contact between mating teeth therefore there is a smooth and quieter operation.
It has more load-carrying capacity because more teeth are in contact at a time and there is a greater arc of contact.
It permits higher operational speeds.
The spiral bevel gears if made within one system then only they can be interchangeable otherwise they are interchanged with the sets together.

4 views Answered 2022-09-04 04:29

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