Can a Wrap Spring Clutch can operate at 5000rpm with 40NM input torque

Have you chosen a "wrap spring clutch" yet? If so, what are the specifications?

I "googled" wrap spring clutch and got a bunch of hits. Try it -- you'll like it!

Thanks you very much for your feed back. I appreciate it. Specification for this is: Square Spring Width/Thickness = 3mm

No Of coils = 12, Speed is 5000rpm. We want to slip the clutch if the torque exceed the 40NM.

Danister

Check out Dynacorp as well as an article on the subject at Machine Design

You will need to talk to an engineer about slippage at > 40 Nm.

Bill

Thank you very much. I'll contact them and let you know the status.

Hae a nIce Weekend

Danister

Like Bill said, you have to look at the specs. At 5000 rpm you are probably going to make a few revolutions before the clutch engages completely. I'd find a company and call the sales rep.

Try this; probably you will know everything about magnetic clutches

http://www.ogura-clutch.com/products/industrial/applications/photo-picture-cut-off-machine.html?PHPSESSID=948286500bfcdcfa3f9eba1f95311e72

The problem you are confronted with is the generated heat and the temperature the coil could reach. Thus the most important factor is the time you let it slip and the relative sliding speed during slip. Make a rough computation : the thermal power is the torquex sliding diffrential speed in radian/s. At the maximal speed of 5000rpm ( 523 rad/s) the friction power will be 20.94 kW! Do you have enough convective area to eliminate it ? If temperature goes over a limit the spring will loose its preload and will not be active any more.