There are definitely inch sizes of ER-16 collets on eBay, both in sets (by 16ths or 32nds), or individually.
I like to Keep It Simple, but I felt it was worthwhile to complicate my collet strategy to hopefully make shop life easier on me. In each ER series, (I have ER-11, ER-16 and ER-20), I have inch size collets for the standard inch sized tool shafts. For the mill, I have a 50 position tool rack with a lot of Tormach Tooling System compatible ER-20 collet holders, and the standard shafts use the matching collets. I also bought a couple of more in each standard inch size for standard shaft tooling I might need for a job that's not in the tool rack. But for drill bits, I bought 4-5 of each metric size collet and store them in an organizer box to be used for the vast array of drill bits I may need which can be any size. The metric sets overlap with fewer collets than the inch collet sets. It's not as complicated as it sounds. I don't convert the decimal drill sizes to millimeters. I just poke the drill into the collets until I find the right one, usually on the first or second try. My CNC router collet strategy is similar, but simpler. I don't have a lot of ER-11 collets because I have less tooling on the CNC router and there are no nice collet holders to maintain Z height for quick tool changes, unfortunately. I have a metric set for all of the odd sizes, and a couple of 1/8" and 1/4" collets. I paid for hopefully lower runout for the 1/8" and 1/4" collets on the router because the spindle spins at a much higher speed and I'm more likely to be using small cutting tools in the CNC router. Others must have a similar metric-inch collet strategy because there are ER-11 collet sets on eBay with 1-7mm collets and 1/8" and 1/4" collets. If you're using arbitrary size drill bits for your projects, you don't want the Goldilocks problem where one collet is too big, and another collet is too small, and there is no collet that is just right. Get a metric set with 1mm spacing and you should be good. On 01/28/2016 11:11 PM, Gene Heskett wrote: > Greetings; > > It appears that the ER16 series of collets is virtually all metric sized. > > I there another series of collets that will fit in an ER16 spindle, but > are sold in inch sizes? > > Thanks. > > Cheers, Gene Heskett ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
