The machine started breaking a deep hole drill before it was wearing out. I tried replacing the main spindle collet but we were unable to acquire a replacement guide bushing. Now, before the deep hole drill operation completes the machine alarms out with:

S03 Servo Alarm: NR 0050 A7 %5

I thought it meant the guide bushing was too tight but I have retensioned it looser several time with the same result. I know the S03 0050 A7 has to do with and overload of the push rod in the bar feeder but I don't know what %5 or the NR means.

The drill is 5.2mm going 23xdiameter.

Any help would be appreciated.