# How do radial tooth clutches function?

• Engineering
• Amaelle
In summary, the conversation discusses the function of radial tooth clutches in transferring power from input shaft to output shaft, and how they disengage when the torque reaches a certain limit. It is explained that the disengagement occurs through a radial force generated by the transmitted torque, which pushes the gear of the output shaft. This type of clutch is different from the ones previously discussed, as it is controlled by the operator and is commonly found in automobile gear boxes. A diagram is also mentioned, which is from the speaker's machine design syllabus.
Amaelle
Homework Statement
look at the image
Relevant Equations
tooth cluches
Greetings

I have a hard time understanding how the radial tooth clutch function when it stops transferring power .
Basically I understand that clutches:
1) transfer power from input shaft to output shaft
3) disengage when the torque transmitted has reached a certain limit ( normally when the sliding starts)

I would like to know how the disengagement happen in the case of radial toothed clutches as the input and output shaft are connected via coupled gears? do we have slipping in gear teeth?
thank you!

maybe
if the transmitted torque is too high it will generate a radial force big enough to push the gear of output shaft and here we stopped transferring power?

This type of clutch is not like the ones of your previous post, which reach a maximum torque and then slide or disengage.
This is not a clutch per se.

Part B is forced to slide over shaft 1, engaging and disengaging at will of operator.
It is common in automovile gear boxes.

jack action and Amaelle
Thank you very much this is what I wanted to know!

Here is a cleaned-up version of your figure (it still could be better). Can you give a link to the source?

You are welcome

jim mcnamara, jack action and Amaelle
berkeman said:
Here is a cleaned-up version of your figure (it still could be better). Can you give a link to the source?

View attachment 314099
Sure , thos picture is from my syllabus of machine design

Lnewqban

## 1. How does a radial tooth clutch engage and disengage?

A radial tooth clutch engages and disengages by using a series of teeth on the inner and outer rings. When the inner ring is rotated, the teeth on the inner ring mesh with the teeth on the outer ring, causing the two rings to rotate together. To disengage, the inner ring is rotated in the opposite direction, causing the teeth to disengage and allowing the two rings to rotate independently.

## 2. What is the function of the springs in a radial tooth clutch?

The springs in a radial tooth clutch serve to keep the teeth on the inner and outer rings engaged. They provide the necessary force to keep the teeth meshed together, ensuring a strong and reliable connection between the two rings.

## 3. How does a radial tooth clutch handle torque?

A radial tooth clutch is designed to handle torque by using a large number of teeth on the inner and outer rings. This allows for a greater surface area of contact, distributing the torque evenly and preventing any one tooth from bearing too much force.

## 4. Can a radial tooth clutch be used for both forward and reverse rotation?

Yes, a radial tooth clutch can be used for both forward and reverse rotation. The direction of rotation is determined by the direction in which the inner ring is rotated. As long as the teeth on the inner and outer rings are properly aligned, the clutch can engage and disengage in either direction.

## 5. What are the advantages of using a radial tooth clutch?

Some advantages of using a radial tooth clutch include its compact design, high torque capacity, and ability to engage and disengage quickly. It is also a reliable and cost-effective solution for transmitting power between two rotating components. Additionally, a radial tooth clutch can handle high speeds and operate smoothly without the need for lubrication.

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