Question

Difference between positive clutch and friction clutch

Answer 1

Clutch: Why is friction clutch preferred over positive clutches in modern transmissions?
1 ANSWER
Visakh V Krishna
Visakh V Krishna, Railway Enthusiast
Answered Jul 31 2013
Positive clutch constitutes the action of engaging and disengaging through mating surfaces.Bringing two rotating parts to mate together at a very high rpm is very difficult and so normally during the engaging and disengaging the parts are brought to lower speeds.Hence they are suitable only for low speed applications. And they also tend to get damaged quickly as compared to the friction clutches.

And moreover, the maintenance of a friction clutch is comparitively easier.

Answer 2

Answer:

Frictional clutches, in contrast to positive contact clutches, can engage gradually. No of the loads or speeds, they can smoothly transfer electricity.

Explanation:

• Positive clutches are rarely employed.
• They could, however, be utilised in situations when a synchronous drive is necessary.
• Positive clutches are collars with interlocking jaws, one of which is slidably linked to its shaft while the other is securely attached to it.
• In a friction clutch, the drive is imparted through friction between surfaces that are attached to the driven and driving shafts.
• Asbestos, cork, or other fibrous materials are used to line these surfaces.
• When positive (no slip) drives are required, positive clutches are employed.
• Compared to friction clutch, they are hardly frequently utilised.

These are the differences between positive clutch and friction clutch.

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