Piotr monitored spindle currents while milling 6061-T6 aluminum under a variety of conditions with his Jianken “2.5kW” ATC spindle. Unfortunately his nicely documented results aren’t as useful as they could have been because it’s unclear how the VFD was configured, what the spindle is really capable of, or how the spindle should be driven. But I took a stab at predicting how it performed anyway based on the characteristics of other 2.2kW spindles and the “accepted” K-factor for the material.
2020-01-29 Update: The labels on some of the chart axes in the previously posted spreadsheet were corrected. Here’s the corrected spreadsheet: Piotr2c.zip (31.4 KB) and another chart from it.
