Clutches are defined as the devices used to engage or disengage power source from other parts when operator needs to do it. There are two conditions on which the clutch operates Initial condition Final condition Initial condition When driving member is rotating and driven member is at rest. Final condition When both driving and driven members is rotating at same speed. Clutches can be classified into further types Positive contact clutches Friction clutches Electromagnetic clutches Fluid clutches and couplings.

Positive contact clutches

This type of classification has spiral jaw clutches, square jaw clutches and toothed clutches. Basic principal of all these clutches are the same that is the transmission of power with the interlocking of teeth or jaws. Main advantage in these clutches is the positive contact and by this contact, we can transfer torque without slippage. - See more at:

Friction clutches Single and multi plate clutches, cone clutches and centrifugal clutches are the sub-types of friction clutches. In all these types, we can transfer torque through friction. It means that the more the friction between elements, the more will be the torque

transmission.

Electromagnetic clutches Magnetic hysteresis clutches, magnetic particle clutches and eddy current clutches are the sub-types of electromagnetic clutches. In these types, we can transfer torque using magnetic field. These clutches has some advantages over other clutches like instant response time,

ease of control, smooth operation and abrupt stop. - See more at:

Fluid clutches and couplings Just like the name defined, in this types, we transfer torque from driving shaft to driven shaft with the help of hydraulic pressure. Things which make these clutches different is the fluid coupling. This coupling offers us extremely smooth, start operation and has the ability to

absorb shock. -

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