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What Is the Difference Between Clutch and Coupling?

🔗 What is Shaft Coupling? its Advantages and Requirement 🔗 What is clutch? Types of clutches Comparison between clutch and shaft coupling...

What Is the Difference Between Clutch and Coupling?

🔗What is Shaft Coupling? its Advantages and Requirement

🔗What is clutch? Types of clutches

Comparison between clutch and shaft coupling?



Clutch is a device that provides a temporary connection between the driver and driven shaft.


Coupling makes the permanent and semi-permanent connection between two shaft ends.


Used where driven shaft/ driven machine required to be in intermittent service.


Coupling used where driven shaft required to be in continuous service.


Clutch allow disconnection during the operation. Provide a mechanism for rapid engagement and disengagement during the operation at the operator will.


It does not allow disconnection of the shaft during the normal operation (Torque limiting coupling allow slipping when torque limit is exceeded). Connection is in permanent nature, so there is no mechanism for quick connection and disconnection.


What Is Shaft Coupling? Its Advantages, Requirement, Types

shaft coupling

What is shaft coupling?

Shaft cannot be made for very long due to its inconvenience of transport. The shaft coupling is a mechanical device that connects two shafts together at its end in order to have a greater length for transmitting power. Even though its primary function is transmitting power, it also enables some end movement and degree of misalignment.

Explain Stress Strain Diagram - Elastic Limit, Yield Point, Ultimate Stress, Breaking Stress


For designing machine parts, it is crucial to know how the material function in service. For this purpose, certain mechanical characteristics of material is determined from a standard tensile test. This is a destructive test that consists of gradually loading the specimen material and noting the corresponding change in the specimen's length and diameter until it fractures. This test is done by a universal testing machine (UTM).

What Is Comparator in Metrology? How It Differs from A Direct Measuring Device?


What is comparator in metrology?

The measurement of an unknown quantity is done by comparing it with a known quantity known as standard. If this measuring device has a built-in standard, it enables us the direct measurement of the unknown quantity. These are called direct measuring instrument. Example for direct measuring devices are Micrometers, Vernier Calliper etc.

What Is Preignition - Causes and Disadvantages of Preignition

What is preignition?

Preignition is a phenomenon in the IC engine in which homogeneous fuel charge burned before the normal ignition starts (or in the absence of spark). The preignition is initiated by the overheated projecting parts such as spark plug, exhaust valve head, carbonaceous deposits and hot spot in the combustion chamber. The autoignition (or knocking) may overheat spark plug, valve head and it remains so hot that it may ignite the fuel charge in compression stroke of the next cycle.

Difference Between Knocking and Detonation? Theories of Knocking



What is the difference between knocking and detonation?

“Knocking” and “detonation” are the interchangeable terms refers to the phenomenon of uncontrolled combustion in the IC engine. “Knock” is the sharp metal pinging sound produced in the engine due to uneven combustion. There are generally two theories for knocking. 1) auto-ignition theory and 2) detonation theory. These theories led many people to use the term detonation for knocking. In general, detonation is the cause and knocking is the after effect.