50 inches per minute is the max that the Globe motors can go at 30 vdc The motor voltage is dependant on the line voltage to the controller power supply. It does not mean that your machine can go that fast.
Many things can prevent your machine from traveling this fast. Things such as too tight of gib adjustment, lack of lubrication on the slides or lead screw, too tight of adjustment on the anti-backlash nuts, etc.
You probably need to derate the max steps per second when the machine is rapiding to accomodate a lower line voltage. This is covered in some detail on the IMService user forum.
Have you tried to write a simple g-code program to test the machine? that way you can easily detect what is causing faults and eliminate any problems that may be associated with the Bobcad, files or the pocketing complexities.
Fred Smith - IMService