On Sunday 17 October 2021 22:34:35 Ralph Stirling wrote: > I just got a great deal on three 750w brushless servos and drives to > upgrade my cnc mill. They have the same face dimensions, but the > shafts are 5mm longer than the old brush servos. There was no > clearance between the motor shaft and ball screw inside the coupler, > so I need shorten the 32mm long 19mm diam shafts by 5mm. Can this be > done without damage to the motor from heat or vibration? I don't want > to have to pull the ball screws. > > Thanks, > -- Ralph > 5+mm is a lot to grind off, probably sawing might be quicker. Either has the possibility of brinneling the motor bearings enough to shorten their life. And I'd power the motors to use their holding torque while doing that.
And you could make 5+mm thick spacers and use the motors as is by drilling and tapping the mount holes so the motors are rotated 45 degrees. I doubt they would care. I would do the latter, much easier on the motors bearings. Cheers, Gene Heskett. -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author, 1940) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
