[Gannz]

Frame is the beefiest 4060 Chinese kit I could find.

Spindle is a Gpenny 65mm 220V 1.5kW water cooled w/ Huanyang 220V 3kW VFD

Thought I had the steppers figured out (high torque, low inductance, high voltage) but then I found out about 3 phase steppers and now I don’t know how to compare the 3 phase driven at 50V to a 2 phase @ 80V. Here are my options…

1. Lichuan LC57H3100 3ph 3.0Nm 4A 3.0mH N23 motor w/ LCDA357H 50V driver & 45V PSU

2. Leadshine 57CME23 2ph 2.3Nm 5A 1.75mH N23 motor w/ CL86H 80V driver & 72V PSU

3. Leadshine 573HBM20 3ph 2.0Nm 5A N23 1.85mH motor w/ HBS507 50V driver & 45VPSU

4. Leadshine 86CME45 2ph 4.6Nm 6A 3.97mH N34 motor w/ CL86H 80V driver & 72V PSU

The frame is on order so I can’t confirm but the N34’s should fit the X & Z but the mounting brackets will overhang and look goofy. So option 5 is the 2 phase N23’s on the X & Z and the N34 on the Y.

Price is about the same for either option but 3 phase N34 is out of the budget.

I'm leaning toward option 3 because of the lower inductance motor vs the Lichuan and the Lichuan torque curve seems sketchy.

Torque curves attached:

Lichuan LC57H3100 3 phase (I don’t understand this… 1Khz = 60,000 RPM so this scale seems way off when compared to the Leadshines shown in RPM)

Leadshine 57CME23 2 phase (this is the torque curve for the Leadshine CS-M22323. It’s hard to find the torque curves for Leadshine because what they have on their website is not the same part numbers as what they’re selling on Cloudray and Aliexpress. On the website, they only have the 57CM23 which is an open loop or the CS-M22323 which is not close on the part number but the specs are identical to the 57CME23. So I assume this is the torque curve for the 57CME23/CS-M22323…)

Leadshine 573HBM20 3 phase (again, hard to find torque curves for retail leadshine models but this graph popped up on youtube when someone was discussing this model)

Leadshine 86CME45 2 phase N34 (can’t find the curve for this specific model either… only the 86CM45 which is open loop or this CS-M23445 which is identical but it's 4.5Nm vs 4.6Nm)