Take a look at the DMM servos. https://store.dmm-tech.com/collectio...0Servo%20Motor
1kW for X and Y axis, 1.3 or 1.8kW for the Z axis. I would match the motor frame to the original motor frames, makes installation easy, just bolts in.
I have 4 of their 1.8kW units on my CNC lathe and they have been operating flawlessly for the last 2 years running production every day, and have used them in other applications also.