Just received a 0.4kW air cooled spindle and a 110v Delta VFD from UgraCNC.
GMT Air Cooled CNC Spindle 0.40 kW 220 V S | SQUARE CNC SPINDLES | CNC SPINDLES | UgraCNC.com
http://ugracnc.com/CNC-SPINDLES/Delt...75kW-110V.html
I am going to use this spindle to replace the Kress spindle I'm currently using. While the Kress has been working fine, I just installed its fifth set of brushes. It seems I get about 200 hrs of use from each set of brushes. Although its not that big of a hassle to replace brushes, I thought it would be nice to have a real VFD controlled spindle in my small router. http://www.cnczone.com/forums/diy_cn...ter_build.html
I decided to go with the UGRACNC spindle because I've heard reports that Andy's spindles have worked well for others. It was a little more expensive but I thought it would be worth it to get something that is very likely to work well. Andy states on his web site that all spindles are tested before shipping and all have less than .001" runout. UGRACNC has a whole bunch of spindles undergoing tests on YouTube.
I was thinking about the 0.4kW and 0.8kW spindles. When I discovered that the 0.4kW spindle has a 43 mm nose (exactly the size of the Kress) making it a drop in replacement in my system, I was sold.
Here's a picture of the spindle and Kress side by side:
Attachment 183908
The Kress is a little bigger than the spindle but the spindle weighs a little more.
Here's the spindle installed in the mount that I made for the Kress:
Attachment 183910
Fits perfectly!!!
Here's a tag on the spindle similar to the ones Andy posted on YouTube:
Attachment 183912
When I looked on YouTube.com, I couldn't see my spindle being tested. (I'm going to email Andy and ask about that tonight.)
Here's a photo of the documentation for the Delta VFD:
Attachment 183914
Yikes! It's the Chinese version! I certainly can't read it.
After a few minutes of consternation, I found an English version on line at: http://www.deltaacdrives.com/wp-cont...ser-Manual.pdf
Attachment 183916
173 pages. Clearly I need to do some reading.
Here's the documentation that came with the spindle:
Attachment 183918
More Chinese but the connections look straightforward. Don't think this will be a big deal.
Bought 16/4 Continuous Flex MultiConductor shielded 1000VAC oil resistant cable from McMaster http://www.mcmaster.com/#catalog/119/802/=mnmgxv because UgraCNC was out of cable when I bought the spindle and VFD from them.
Since the Kress works fine (and has a new set of brushes), I'm in no hurry to get the spindle installed. Thought that I'd post this hoping that others with more experience will point out potential pitfalls that I can then avoid as I integrate the spindle into my system. Also thought that others contemplating replacing a Kress spindle with something else might find this interesting.