Frank said the collet wrench length for each size should provide the approximate torque needed. I tested the smaller ones I have < ER20 which use a hex nut and the wrench is close.
I guess if your machining at 10,000rpm with aggressive feed rates maybe collets are not the answer... I would assume you would use shrink fit tooling for something like that not end mill holders with set screws. John On 10/31/2012 6:18 AM, andy pugh wrote: > On 31 October 2012 10:59, John Thornton <bjt...@gmail.com> wrote: >> Yes, I emailed Frank at Maritool and he sent me the torque specs for the >> ER collets. >> >> ER 11 20 ft-lbs >> ER 16 35 ft-lbs >> ER 25 60 ft-lbs >> ER 32 90 ft-lbs > Which is all very well, but has anyone ever seen a torque-wrench > fitting that can operate a collet nut? > > Even the (rarer) ones with a hex are tricky, I can find ring and open > spanner ends for spigot-style torque wrenches up to 46mm > http://www.norbar.com/46mmRingEnd_22mmspigot-RingEnds-TorqueWrenches-54-1-2-1839-product.aspx > But that is probably only big enough for an ER25. > > I guess you could always make your own. > ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_sfd2d_oct _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
