A magnetic particle clutch is a special type of electromagnetic clutch which does not uses a clutch plates.

1. K.J.SOMAIYA COLLEGE OF ENGINEERING
(An Autonomous College Affiliated to University of Mumbai)
UMEL502 – THEORY OF MACHINES II
Experiment 1 – Analysis of Clutch.
MAGNETIC PARTICLE CLUTCH
AMAN NILESH HINDOCHA.
A4 BATCH.
T.Y.MECH A.
1825005.

2. Introduction.
• A magnetic particle clutch is a
special type of electromagnetic
clutch which does not use friction
plates.
• Instead, it uses a fine powder of
magnetically susceptible material
to mechanically link an otherwise
free-wheeling disc attached to one
shaft, to a rotor attached to the
other shaft.

3. When a magnetic field is applied
by a coil to the powder, it forms
chains connecting the disc and
rotor. The strength of the chains
depends on the strength of the
magnetic field. If there is not a
magnetic field being applied to the
powder, then powder is free
floating. In this state the clutch is
able to spin freely without any
engagement of the input shaft to
the output shaft.

4. Components.
• Electrical coil – produces the magnetic field for the particles to react
to.
• Input shaft – the end of the main shaft that is attached to the driving
force.
• Output shaft – the shaft that is on the other side of the clutch. This
shaft is the one affected by the amount the clutch is being engaged.
• Bearings – allow the input and output shaft to spin freely without
binding.
• Magnetic particles – the powdered magnetic material inside the
clutch.

6. Application in Treadmills.
• They are used in treadmills to control the
speed of the belt smoothly.
• It is also used to protect the electric
motor of the machine from being
overloaded when people with different
weights use it.

7. Other Applications.
• A real-world example of this can be found in paper mills. Paper mills
require material to be fed into their rollers at a constant rate. These
clutches allow the material to be fed into the rollers at the right speed
while also maintaining tension on the material.
• Magnetic particle clutches are also used in cycle controls. They allow
cycles to have a constant amount of torque while the cycle is being
completed. A great example of this is a machine that puts caps on
bottles.

8. Features of Magnetic Particle Clutch.
• It doesn't exhibit stick-slip phenomenon.
• It is more resistant to wear.
• It has a very fast response time.
• Over load protection.
• Works great for soft start applications.

9. Advantages.
Advantages over a friction plate clutch include:
• The torque may be easily and quickly controlled.
• It may be used for continuous slip applications.
Disadvantages.
• Can be more expensive than a conventional clutch system.
• Requires a power source to control the magnetic field.

10. Specifications.
• Material - Mild Steel.
• Size - 12 inch.
• Surface Treatment - Galvanised.
• Shape - Round.
• Color - White.
• Brand - Mod E-Tech Engineering Private Limited.
• Torque – 7.5 to 2500 Nm.

11. THANK YOU!