I am converting my Z axis to linear guide rails. I am leaving the X and Y axis as dovetail.
However my question is about the stepper motor and driver.

From the begining I have been using a KL23H2100-50-4B and I was using the KL 6050 driver with a 57vdc power supply I made.
My best rapids before the Y extension and treadmill motor upgrage was 200 IPM

When I did the Y extension, and the ATC/Powerdraw bar it went down to 100 IPM

Since I was doing the linear rail upgrade for the Z axis I also upgraded the driver to the 8060D, and a 80vdc switching powersupply I purchased.

Yet I am still only getting 120 IPM rapid for the Z axis.

Why so slow? you were getting 260 to 290 with the 48vdc power supply and the 6050 driver.

Any ideas?