On 10/31/2012 07:18 AM, andy pugh wrote: >> 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?
When I saw the ER collet holder torque list, I interpolated to about 45 ft-lbs for ER-20, considered the lengths of my ER-20 wrenches, and determined "as hard as you can without hurting yourself". If you wanted to get fancy and make it goof proof, you could make a tool room bench fixture. Drop in the hand tightened ER collet holder, pop a custom ER nut sized square drive adapter onto a click-style torque wrench, and get exact about it. In my hobby and small business machining, I'm going for the sweet spot, where I spend a little (time and money) and get the most in return as possible. For what I'm trying to accomplish, imported low cost quick-change ER collet holders seem to be where I want to be right now. I'm not running three shifts, and trying to hire low paid parts changing monkeys who need idiot-proofed systems. Maybe someday, I'll have a vertical machining center with CAT-40 tooling... but I doubt it. ------------------------------------------------------------------------------ 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
