The following are considered during the design of the friction clutch.
The coefficient of friction of contact surface should be high enough to hold the load with a minimum amount of axial force. It should not require an external force to carry the burden.
The moving parts of the clutch should be lightweight to minimize the inertia load at high speed.
Heat generated at contacting surface should dissipate rapidly.
It should have provision for taking up the wear of contact.
Guard the projecting parts by covering and provide a provision for easy repair.