On Wed, 31 Oct 2012 14:42:38 +0000, you wrote: >On 31 October 2012 14:01, Erik Christiansen <dva...@internode.on.net> wrote: > >> ER40 130 ft-lbs according to >> >> >> http://blog.cnccookbook.com/2010/09/28/getting-the-best-performance-from-er-collet-chucks/ >> >> The wrench supplied with my ER40 collet chuck is 11" long. I'm not sure >> I can comfortably put 140 lbs of force onto it using only one hand, so >> might not need a torque-wrench. >> > >That is the specified torque, not the maximum torque. I think the point is >that you can't get it tight enough with the supplied tool.
Not sure about an 11 inch long spanner for ER40 - seems small. But I can easily tighten an ER32 on a 20mm (.787inch) end mill in and it wont come loose using the supplied spanner, which is 12 inches long. Specified is 100ft/lbs - I can pull 100lbs, but I'm sure I'm not tightening that much - maybe 80. The chucks I'm used to have bearings in also. Steve Blackmore -- ------------------------------------------------------------------------------ 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
