doimak machine, rir+re series, has been specifically designed for the grinding of ball screw nuts. it allows in one clamping the internal grinding of the nut thread, and the grinding of the external diameter and faces. it......doimak machine, rir+re series, has been specifically designed for the grinding of ball screw nuts. it allows in one clamping the internal grinding of the nut thread, and the grinding of the external diameter and faces. it includes an own developed software for the automatic wheel profiling with compensated profile, doing possible the grinding of large pitch nuts.