Reply with QuoteLooks like it - there seem to be teeth on the outside of the cup in one of the pics, but it's tough to tell for sure. I wouldn't buy it for that much money unless I could find specs on it to know what the allowable torque is.
Is this a harmonic drive?
Does this look like a harmonic drive?
DNS HEAD, GEAR 2-39-54857 - eBay (item 150519042369 end time Mar-11-11 11:34:40 PST)
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Looks like it - there seem to be teeth on the outside of the cup in one of the pics, but it's tough to tell for sure. I wouldn't buy it for that much money unless I could find specs on it to know what the allowable torque is.
CNC mill build thread: http://www.cnczone.com/forums/vertical_mill_lathe_project_log/110305-gantry_mill.html
Yes it is, but according to part number it seems to me that it is size 11, 1:50 ratio component set and size 11 is very, very small - around 30mm in diameter. Ask seller if you want be sure. If you plan to use it for fourth axis, look for size 20 and bigger... Look here: Products | Component Sets | CSF Series Gearing Components :: Harmonic Drive LLC , there are similar ones.
Thanks guys. I was hoping for a bigger unit. Harmonics LLC quoted me at over $2k each! Guess I'll keep looking on ebay
Keep in mind that you'll likely want a gear head rather than a component set. You'll have to add your own bearing if you go with the component set.
