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ER16/11 Collet-Chucks for PicoCNC spindle arrived

Leave it to the Chinese, to come up with good quality products, completely unavailable anywhere else, for a really awesome price. After 3 weeks of waiting, the collet-chucks (ER11 & ER16) for the picoCNC - A modular fabrication robot spindle finally arrived directly from Hong-Kong:

CTC-Tools ER16/ER11 collet-chucks, collets and clamping nuts in comparison

There are a lot of ER11 and ER16 collet-chucks out there, so what makes these one so special? Simple: These ones come with an 8mm shaft, which is going to be inserted as a drop-in replacement for the 8mm motor shaft of a 5045 class brushless outrunner.

After a preliminary review, the first prototype will be built with the more massive ER16 collet-chuck, since the threading will probably survive longer and the collets also seem to be more heavy-duty than the ER11.

If it works and all other parts play equally well, it should be possible to build a robust and precise enough power spindle for a CNC router/gantry system for less than 100EUR. It might also be an attractive option for other Hackerspaces and FabLab's who are building CNC routers as well.

More Details
PicoCNC Main Page

Mission-Log entry created by chrono on 2012/07/08 18:59 UTC

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