Eddy
Current clutches give torque as a function of RPM. The faster
you turn the rotor, the more torque. This means by increasing or
decreasing the RPM, you can get infinite torque adjustment.
Typically, we rate the clutch with a gain factor (k), which is
gram millimeters/rpm or Newton meters/rpm and we design the
clutch to have an operating “slip rpm” between 1 and 300 rpm.
Time Proven Designs
At Magnetic Technologies Ltd. we have been
building custom eddy current clutches since 1984. We are
constantly fine tuning and improving our designs. Today, we have
hundreds of custom designed units in use. We have eddy current
clutches running on every continent. Because of our maintenance
and retro-fit programs, we have a chance to see how our clutches
perform over time. Most are still in use even after 15+ years of
continual service!
Pricing & Delivery:
We build all our eddy current clutches to
order. Some of the most popular sizes include:
(1) 76mm OD; 16 to 50mm wide; 25 to 45mm ID
Typical torque gain factor 17 to 100 Gmm/Rpm
(2) 152mm OD; 45 to 300mm wide; 50 to 90mm ID
Typical torque gain factor 0.020 to 0.142
Nm/Rpm
For a price quote, please tell us about your
needs and specifications.
Required Information:
(1) Dimensional Data:
Typical
Applications:
Generally, eddy current clutches are used for take-up
applications on slitting and rewinding machinery. Eddy Current
Clutches give very accurate tension control.
Width, outside diameter, inside
diameter (key or keyway requirements), and preferred clutch
material
(2) Torque requirements:
Starting and ending tension, line
speed, material width
(3) Retention System (if required):
Type of core or hub you want to mount
to our clutch. What is your current retention system? Can you
send us an actual
sample of the core or hub you want to
mount on our clutch?
(4) Application/Machine information:
What is the manufacturer of your
machine? Can we get a sketch of the application?
