View Full Version : LB-15 max spindle rpm

10-01-2008, 10:26 AM
Can the max spindle rpm of an LB-15 w/ OSP5000L be adjusted by changing a parameter or is it more involved? My machine maxes out at 2500rpm yet the meter shows max at 3800. There is a data plate on the side of the machine listing different models and sizes of chucks, according to this, 3800 rpm should be within the working limits of my chuck. I know that there are other factors to consider here (spindle bearings, pulley sizes etc). I was just hoping to squeeze another 500rpm or so if possible. Currently it uses a Fanuc AC spindle drive. Not sure if the spindle motor is Fanuc or not. Any help on this matter is greatly appreciated.


10-01-2008, 10:46 AM
Check Optional Parameter (Word) #73. This is Allowable chuck rotation speed. Set to 0 to allow any rpm the machine will allow, or to whatever you want to limit rpm to

10-01-2008, 12:07 PM
Thanks Oti,

I have the early 5000L "green screen" control and unfortunately I don't seem to have parameters in this number range(only 1 page per parameter list). Unless of course they are hidden. Is there a way to access hidden parameters for this machine if they exist?

10-01-2008, 12:45 PM
Turns out there was a G50 S2500 command resident in memory which was causing this. All taken care of now.