Difference between Single and Multi plate clutch

DIFFERENCE BETWEEN SINGLE And MULTI PLATE CLUTCH

1. The number of pairs of contacting surfaces in the single plate clutch is one or at the most, two. There are more number of contacting surfaces in the multi-disk clutch.
2. As the number of contacting surfaces is increased, the torque transmitting capacity is also increased, other conditions being equal. In other words, for a given torque capacity, the size of the multi-plate clutch is smaller than that of the single plate clutch, resulting in compact construction.
3. The work done by friction force during engagement is converted into heat. More heat is generated in the multi-plate clutch due to increased number of contacting surface. Heat dissipation is a serious problem in the multi-plate clutch. Therefore, multi-plate clutches are wet clutches, while single plate clutches are dry.
4. The coefficient of friction decreases due to cooling oil, thereby reducing the torque transmitting capacity of the multi-plate clutch. The coefficient of friction is high in dry single plate clutches.
5. Single plate clutches are used in applications where large radial space is a available, such as trucks and cars. Multi-disk clutches are used in applications where compact construction is desirable, e.g., scooter and motorcycle.

SINGLE PLATE CLUTCH VS MULTI PLATE CLUTCH

SINGLE PLATE CLUTCH	MULTI PLATE CLUTCH
Single plate clutch consists of a clutch plate whose both sides are coated with a frictional material.	The multi Plate clutch consists more than one clutch plate.
Torque transmitting capacity is less.	High torque transmitting capacity or multi plate clutch is smaller than the single plate clutch for a given torque capacity.
Heat generation is less, so there is no need of a cooling medium. It is called “dry clutches.”	Heat generation is more due to more frictional surface. So it needs a cooling medium and referred as “wet type” clutch.
The coefficient of friction is high.	The coefficient of friction is low.
Faster response; Clutch engagement Clutch engagement not is almost instantaneous.	Clutch engagement not instantaneous.
Single plate clutch used where large radial space available. e.g. Trucks ,Cars.	Multiple Disc clutch is used where compact construction is desirable. E.g. Motorcycle, Scooter.

Related Topics

• SINGLE PLATE CLUTCH

• MULTI PLATE CLUTCH