Small Spindle Video

[automationtech]

We make a video for 0.3W air cool Spindle
It is using the 36VDC, PWM control

http://www.youtube.com/watch?feature=pl ... hZAGekLyyE

http://www.automationtechnologiesinc.co ... cnc-router

[macona]

You stick a ER chuck on a generic DC motor and call it a spindle? Really? What kind of bearings?

[automationtech]

We know it is a DC motor used as a Spindle. What is your suggestion for the name?
The bearing is a good quality one made in China

[macona]

A Spinning POS?

The bearing is a good quality one made in China

That is not a kind of bearing. Is it radial ball, sleeve, angular contact, deep groove radial?

You list .01 to .04mm runout, is this axial or radial runout?

[Liberty4Ever]

A Spinning POS?

That sounds a bit harsh. Do you have some specific negative experience with this product to justify the negativity?

[macona]

They are taking a generic DC permanent magnet motor and throwing a ER chuck on it and calling it a milling spindle. And at $150! For that price you can get one of the 3 phase spindles with real angular contact bearings:

http://www.ebay.com/itm/0-8-KW-CNC-rout ... 068wt_1123

A generic motor like this is not suited to this application. The bearings are all wrong. The best thing I would call it is a polishing lathe or dental lathe where you hold pads for buffing and polishing.

Passing off stuff like this to people who do not not better is pretty low in my book.

[canadianavenger]

There is a bit of a discrepancy between the description here, and the $150 option at the link provided. What is described here is a 36V 0.3W motor, what is there is described as a 300W 52V motor. So perhaps they are not the same thing? [although the video is the same... I'm curious to know which description is correct]