How to choose the best servo motor for a Juki LU563

[ValJ]

Please contribute recommendations to the best currently available servo motors to slow down Juki LU563 (or other machines) for Leather Sewing. What is the best quality, reliability, and longevity for servo motor and is it worth having a needle positioning mechanism? I have a head injury and seem to have forgotten a lot of what I knew and greatly appreciate your help with this!

[kgg]

2 hours ago, ValJ said:

Please contribute recommendations to the best currently available servo motors to slow down Juki LU563 (or other machines) for Leather Sewing.

Basically you have two main choices i) Brush type servo motor ii) Brushless servo motor

Brush type servo motor have No electronic controller components. The typical size is 550 watt, use a simple dial for setting the motor speed and have typical startup speeds in the 200 rpm range.

Brushless servo motors have a electronic motor control. The typical size is 750 watt, set the speed of the motor on control panel, have a typical startup speed of 500 rpms and have the built in ability of a needle positioner. The number of internal coils typically are 6 while the better ones have 12 coils. More coils the better the motor. Some of these motors with a needle positioners will not work properly if a speed reducer is added.

Needle positioning feature some people love them while others not so much.

Cost wise a basic brush servo motor is about $150 CAD while a 12 coil brushless servo motor is about $250 CAD.

A 550 watt brush type servo motor should handle the torque needs of the Juki LU 563 without the need for a speed reducer while a brushless servo motor may require one due to the typical startup speed of the motor.

kgg

[rac1812]

Good evening KGG ......nice to see a fellow Canadian.

I am using a cleaned up SInger 211G156 Walking foot for canvass seat covers and now for fixing leather straps to canvass truck covers......

Not being very skilled at sewing....... the high speed clutch motor was the first problem......solved that by building a belt reduction device  box that  roughly  reduces 10 to one....so max speed now is around 300 rpm.

BUT...... I don't seem to have much torque on start up so nI punch the pedal and it "kindda" jump starts on me..... and I jump....quality suffers......  I need something like a patcher that goes chunk kachunk kachunk and can be guided easily by hand.  Will installing a 1000 or 1500 watt servo....with or with out the reduction set up work?..... and I realize they all seem  made in China but do we have reputable USA or Canadian retailers to recommend.... I do have a USA UPS box for direct mailing.

will a servo work??? what kind??? what power?

Thanks

Bob C

Living a slide East of Ottawa....and better at restoring old CDN military truck than sewing.

 

 

 

[kgg]

57 minutes ago, rac1812 said:

will a servo work??? what kind??? what power?

What I would do first is install a servo motor and dump the clutch motor. I then would install a servo motor either a brush type or a brushless, 550 or 750 watt. I would install the servo motor first without the 10 to 1 reducer you have as it probably is going to provide way to much speed reduction as the typical reduction is 3 to 1. If you go with a brushless I would suggest going with the 12 coil Reliable 6000sm ( https://reliablecorporation.ca/products/sewquiet-6000sm-servomotor ) 550 watt or if you want to go with a less expensive option or another speed reducer contact Chris at Japan Sewing Machine ( (905) 764-0100 ). Those companies are down in the Toronto area.

kgg

[Northmount]

Moved this thread to leather sewing machines.

@ValJ, @kgg, @rac1812

 

[Wizcrafts]

16 hours ago, rac1812 said:

will a servo work??? what kind??? what power?

I buy my servo motors from here. Some go direct to the machine if the pulley is large enough (4"+). Others feed a speed reducer which powers the machine with lower top speed and higher torque. The motors on that page are analog and have a knob to set the top speed. They lose torque at the slowest settings. So, I usually set the knob to the slowest setting that still has good punching power. It's easy to feather the speed with the floor pedal.

[ValJ]

Thank you so very much for all of this very useful information! I’m wondering if anybody has had specific experience putting any of these servo motors on a Juki LU563? I see that the needle positioner on the sewquiet motor does not fit Sewing machines??
Also, I have not yet gotten to the point of knowing the Juki LU563’s upper limits of what Leather to Leather it will sew. I’m hoping that I will not be losing any punch or torque by changing to a servo motor I want to sew within the limits of the Sewing Machine do what it was not made for – – if that makes sense I’m sorry with my head injury if I am not getting my sentence structure out quite right.

If it were you, what motor would you put on a Juki LU563? Bearing in mind that I will be sewing canvas and leather; leather bags, journals, straps, some tent and canvas repair. This machine lived previously in a marina, and did all canvas repair.  I am also interested in a slow start up speed.

Also, I’m in northern Indiana is there any specific Sewing Machine motor dealer or sales people that you would recommend in the Midwest?

Edited February 17, 2024 by ValJ
Forgot question

[fibersport]

Hi from a fellow Hoosier!  

Wizcrafts summed it all up about the brush servo motor.  If you don't need the needle positioner, I would go with the Consew 550 but order it with the 45mm pulley.  I too bought mine from https://www.tolindsewmach.com/motors.html .  I have a Pfaff 545 which is similar to your Juki, I use it for auto upholstery now and will be using it for marine upholstery and covers in the future.  The smaller pulley allows you to feather it at start up so you can better control things.  

[jrdunn]

@ValJ, I replaced the clutch motor on my Juki 562(If I recall correctly, the LU563 replaced the LU562.) with a 550W brush servo motor from  https://www.tolindsewmach.com/motors.html also.  I did install a speed reducer at the same same time, though.  Works great for me.  JM2C, Jim

[Garyak]

Reliable 6000sm sew quite. Put one on my 145w204. Best thing since air conditioning.