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.
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Features & Benefits of Eddy Current Clutches
•
Accurate tension in ounces or grams
• Large bores
and narrow widths
• No electricity,
no slip rings
• No break-away
torque
• No wearing
parts
How Eddy Current Clutches Work
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:
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?
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