https://motorsandcontrol.com/media/d...heets/9433.pdf that is the motor driver i am currently using
The reason I don’t want to go with a kress is because then I couldn’t use the r8 collet
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https://motorsandcontrol.com/media/d...heets/9433.pdf that is the motor driver i am currently using
I think that's wishful thinking. If such small motors could be used the same way as I can use my high speed spindle, which is also 1.5kW, and would perform equally then I believe everyone would use them. I mean, 300rpm/V would be ideal for low speed applications since it would mean 3krpm at 10V and that low speed is an issue for most high speed spindles. Also, don't forget that the current capacity 65A is ONLY for a maximum duration of 15sec... I think that motor also needs a massive fan for cooling without that I guess the motor will overheat in no time, the bearings are probably poor for CNC application since it is been designed for spinning a prop only, and not for milling.
https://www.youtube.com/c/AdaptingCamera/videos
https://adapting-camera.blogspot.com
The motor you linked to has a maximum voltage of 26V. If you have a transformer which is 24V then after the rectifier you will have 34VDC which is too much for the motor. Perhaps you mean you have a 24V 15A power supply, not just a transformer... in which case you are safe. With 24VDC you will get 7200rpm... but also take care of the heat...
https://www.youtube.com/c/AdaptingCamera/videos
https://adapting-camera.blogspot.com
You can see how much torque will be available using an online torque / hp calc like this:
HORSEPOWER TO TORQUE CALCULATOR
You just need to know the motor's rated speed and the HP (or KW).
The rule is, the lower the base speed, the more torque a motor will have for a given hp. I.e. An 1800 rpm 1hp motor will have twice the torque of a 3600rpm 1hp motor. The higher rated speed, the less powerful it will be. It's why you need a crane to lift a 1hp Bridgeport spindle head while a 1hp router spindle is teeny tiny.
If you lower the speed using a VFD, the torque will remain the same. If you use a gear reduction, you double the torque when you half the speed ( because hp remains constant).
It doesn't matter if the speed is reduced by a VFD or by a dc motor speed controls, the point is that if a belt or gear reduction is not used then hp goes down as the speed reduces and you lose the opportunity to increase low speed torque. It's you that should try to understand what is being said. You should read up on this topic.
As I mentioned before HP is RPM related, torque is not, all the DC and BLDC motors I use, the continuous rated torque curve starts at Maximum at zero rpm and gradually slopes down until the maximum rated RPM is reached.
Torque is current related,
https://www.electrotechnik.net/2014/...ion-motor.html
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
I bought a 1 hp treadmill motor that is 6000 rpm
Kress has higher quality bearings and is more like a spindle than a router!
I would not even put it in the same class as a Dremel.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.