So im tuning my motors on my machine and as the title suggests I'm not really getting the speeds I thought I could. l use X as an example. I'm using a 2M982 80v driver on a zapp SY60STH86-3008BF motor. 72vdc to power it. 1605 ballscrew. I have full stepping res on the driver(200 per rev), current set to 4.3a peak(although it does show rms values too), motors wired bp parallel.

Mach settings are 25000hz kernel, 40 steps per rev, and the max i can acheive on this axis is 4000mm/min before stall. Everything is nice and free to move so i dont get it? Even on z i can only get like 4500 mm before stall. I was expecting much more than this, was i wrong?

Also, when getting the datasheet on the motors, there are a pair of yellow wires to a coil on the sheet, on my motors however, the wires are blue, longshot, but could my motor wiring have anything to do with it? My Wiring colours matches up to the Sth88 motors so i assumed they would be the same(assumptions and mothers and all that). Thanks