Looking for a hydraulically damped pulley

Question

Looking for a hydraulically damped pulley

Oszkar (Mechanical)

(OP)

8 May 03 12:17

I have to repeatedly drop a 1Kg load through 2m at about .3m/s. At first a hydraulic rate controller looked attractive until I found that they tend to be used for much greater forces and get very expensive at longer travels. An apps guy suggested I look for some sort of damped pulley. One could call it a dynamometer. Any ideas?

Pekelder (Mechanical) · Answer 1 · 2003-05-09 05:18:32

There are rotational dampers available that you can set to give a desired speed given a certain load. Look at www.dictator.de and look for hydraulic dampers, radial dampers.

Other companies also have them, look around.

Regards,

Pekelder

nbucska (Electrical) · Answer 2 · 2003-05-09 17:47:04

For a small weight like this a magnetic damper should work, too. You could even use it with an encoder or tachometer
in a closed loop

<nbucska@pcperipherals.com>

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Looking for a hydraulically damped pulley