Hybird Servo / Leadshine

[andy_con]

thanks for the link

have you ever used the leadshine hybrid servo to compare agains standard steppers?

[JAZZCNC]

thanks for the link

have you ever used the leadshine hybrid servo to compare agains standard steppers?

Yes and like I say the 3 phase motors are noticebly smoother and hold torque higher up the speed curve. But the larger 2 phase motors work just like normal steppers to me but with closed loop feedback to drive. Good digital drives and normal 2 phase steppers give the same performance to me.

[andy_con]

So why are the leadshine so expensive? Are they well made and good quality? Very reliable?

On a nema34 frame size, if money was no object what's the best setup you could buy?

I like to aim high in life and then work down from there ;-)

[JAZZCNC]

So why are the leadshine so expensive? Are they well made and good quality? Very reliable?

If your meaning Leadshine closed loop then your paying for the encoder and novelty of closed loop. The AM882 are Leadshine drives and they are not expensive. Quality wise they are very well made and reliable. The software technology is well proven and tested. Most of the cheap chinese drives you see are rippoff's of leadshine technology.

On a nema34 frame size, if money was no object what's the best setup you could buy?

I like to aim high in life and then work down from there ;-)

Me I'd buy AC Servo's if money wasn't concern. Or maybe these, not tried any yet but heard good things about them.

http://www.teknic.com/products/clear...-servo-motors/

[Boyan Silyavski]

Or maybe these, not tried any yet but heard good things about them.

http://www.teknic.com/products/clear...-servo-motors/

Do you know how to see the Clear Path SD stepper killer models with prices? I registered there but it constantly loops me from publicity to publicity. Some geek made that web

PS: I found it. It was : "Help me choose a motor.." then down bellow small button "skip and show all models"


I looked around, while they may seem right for Americans, i doubt their value for us. The "stepper killer" seems not a true servo but a closed loop stepper motor, judging from torque at speeds, prices from >300$, then the true servos are from >600$ . For that money one could buy a brand new Brand servo motor +controller.



For ~700$ i could tell you where to buy 4 servos/200w or 400w/ and motors together, though i did not have time to buy and test them. China of course. Seems though people use them re branded and pay greater prices for them.

[JAZZCNC]

I looked around, while they may seem right for Americans, i doubt their value for us. The "stepper killer" seems not a true servo but a closed loop stepper motor, judging from torque at speeds, prices from >300$,

No they are proper DC servo motor and light years better than stepper system. Plus the question was if money wasn't a concern.
You can't possibly compare them to cheap chinese servos because the quality of these would be like comparing to high end Yaskawa or Mitsubishi. It Would be like comparing Apples with oranges.!!

For ~700$ i could tell you where to buy 4 servos/200w or 400w/ and motors together.

But coming back into our world in budget terms then please do because at £175 for set of 400w motor/drive and I presume cables then thats good price.

Edit:

Forgot to say you can't buy Clearpath direct from Technik they route you thru distributor which did contact me but I didn't persue it any further.

[Boyan Silyavski]

No they are proper DC servo motor and light years better than stepper system. Plus the question was if money wasn't a concern.
You can't possibly compare them to cheap chinese servos because the quality of these would be like comparing to high end Yaskawa or Mitsubishi. It Would be like comparing Apples with oranges.!!

Still not sure about that. Just look at torque curve and encoder count so you would see thats the case. Bellow compared the strongest nema 23 from both series. All same as Lead shine, which also make integrated motors

I was speaking about their so called "Stepper Killer" :




it seems the true servo is their so called " High Power"

But coming back into our world in budget terms then please do because at £175 for set of 400w motor/drive and I presume cables then thats good price.

Shenzhen Just Motion Control Electromechanics Co.,Ltd. , Just PM you the details

As it was a private email and a couple of months ago, if sb needs i will send him the details, or why dont just contact them for your need directly, but their closed loop stepper is cheaper than Leadshine, so is the servo drive.

Its worth noting that it took me 10 emails so they understand and agree with me that the closed loop 3nm motor need to be coupled with the bigger than suggested driver, so it could be driven at 70V. So make sure thats the case when you order. You will want 3nm nema 23/ they call it nema24/ coupled with the bigger driver.