I'm running several of these 3kw Chinese air cooled router spindles (on routers). I've had one running 1-2 shifts a day for more than 3 years and have not had any problems with it. I wouldn't trust it to run much less than 9000 RPM for any length of time though or pulling any significant torque. As far as I know the ER collet holders on these things are always integral.
Try searching Ebay for 10000 or 9000rpm spindle. It may show you a few promising leads. Todd Zuercher P. Graham Dunn Inc. 630 Henry Street Dalton, Ohio 44618 Phone: (330)828-2105ext. 2031 -----Original Message----- From: Andy Evans <a...@evanspt.com> Sent: Sunday, June 23, 2019 6:41 PM To: emc-users@lists.sourceforge.net Subject: [Emc-users] Spindle experiences/recommendations? Greetings everyone, I wish to upgrade a dressing spindle in our EMC grinder. We currently have a very small DC motor turning a one-inch diamond-studded disc at about 1500 RPM, with fairly decent results, but my research indicates we may be better served with a much larger disc and higher RPM. We drive this dresser under the wheel with a contoured path to give us the form we desire. There are available dresser spindles in the neighborhood of $12K that are very good looking but we wonder if we can build something that is sufficient for our needs for far less. We are considering the common router/milling machine spindles on ebay, air or water cooled, in the 1-2 KW range. Most of these seem to be equipped with either an ER11 or ER20 spindle, and most are advertised as 18,000 or 24,000 RPM. Some of them tout multiple bearings. Some claim a range of 8,000 to 24,000 RPM. Since I would expect many on this list to have experience with these, I am seeking to find out if we can successfully utilize a 3,000 to 10,000 RPM range, and also if the ER mounts are integral or if they can be removed. Or, if there are better ideas for accomplishing this, or if we are crazy not to purchase the $12K solution. Thank you! Andy Evans Evans Precision Tooling Incorporated 541.990.2122 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
