[0level]

Hello. I am newbie in CNC world. I am finishing my cnc build: It has a Strong Hold Pro frame with 1000x1500mm frame. Now I am trying to decide which spindle will be best for wood and aluminium work. I am between this two spindles:

https://www.aliexpress.com/item/1005...563512304%21sh

This is a G-Penny, but you can choose between: 400Hz - 12000Rpm (I Understand this is a 4 Pole version?).
800Hz - 24000Rpm (I Understand this is a 4 Pole version?).
400Hz - 24000Rpm (I Understand this is a 2 Pole version?)

What are the differences between them? Which are the advantages of 4 poles vs 2 poles? More Torque? Is the 400Hz - 12000Rpm the same spindle that 800Hz - 24000 and both could do the same with a 800Hz VFD?

https://www.aliexpress.com/item/1005...331842037%21sh

This is my second option: G-Penny 1.5Kw 400Hz 24000Rpm 2 Pole

The question is that actually I only have a 220v Single Phase with 20-25Amps available for this setup. Would be possible to make the 2,2Kw spindle work with less current from the VFD as it was a 1.5Kw spindle? If possible, limiting current in VFD there were loose in Torque? If possible I prefer this 2.2Kw Spindle over 1.5Kw Spindle because price difference is not so big so in the future I could get more Amps (current) for the 2.2Kw spindle.

Thanks in advance.

[mactec54]

Hello. I am newbie in CNC world. I am finishing my cnc build: It has a Strong Hold Pro frame with 1000x1500mm frame. Now I am trying to decide which spindle will be best for wood and aluminium work. I am between this two spindles:

https://www.aliexpress.com/item/1005...563512304%21sh

This is a G-Penny, but you can choose between: 400Hz - 12000Rpm (I Understand this is a 4 Pole version?).
800Hz - 24000Rpm (I Understand this is a 4 Pole version?).
400Hz - 24000Rpm (I Understand this is a 2 Pole version?)

What are the differences between them? Which are the advantages of 4 poles vs 2 poles? More Torque? Is the 400Hz - 12000Rpm the same spindle that 800Hz - 24000 and both could do the same with a 800Hz VFD?

https://www.aliexpress.com/item/1005...331842037%21sh

This is my second option: G-Penny 1.5Kw 400Hz 24000Rpm 2 Pole

The question is that actually I only have a 220v Single Phase with 20-25Amps available for this setup. Would be possible to make the 2,2Kw spindle work with less current from the VFD as it was a 1.5Kw spindle? If possible, limiting current in VFD there were loose in Torque? If possible I prefer this 2.2Kw Spindle over 1.5Kw Spindle because price difference is not so big so in the future I could get more Amps (current) for the 2.2Kw spindle.

Thanks in advance.

@ 25A you can just scrap by with the 2.2Kw.

4 Pole should be better 12,000RPM is where it's max Torque will be though, with the 2 Pole the max Torque is at 24,000RPM.

[0level]

Do you think G-Penny 400Hz - 12000Rpm is a 4 Pole version too?or 4 pole will be only 800Hz 24000Rpm? If so, will be in both cases max torque at 12000Rpm?

Will be possible to limit spindle current draw through to VFD config? Will be safe to do that?

Thanks.

[mactec54]

Do you think G-Penny 400Hz - 12000Rpm is a 4 Pole version too?or 4 pole will be only 800Hz 24000Rpm? If so, will be in both cases max torque at 12000Rpm?

Will be possible to limit spindle current draw through to VFD config? Will be safe to do that?

Thanks.

If they have it listed as 12,000RPM max and it is 400Hz it would be a 4Pole.

You would be fine as far as the VFD Drive goes you would never be over loading anything if the VFD Drive is setup correctly.