CowBoyOUTLAW

Our motor do not use buit-in gear box. No need of it

The minimum speed is 50 RPM only, and the torque of motor is enough to drive any extra heavy duty sewing machine, why with gear reducer? For the high price, easy to explain: other 800W and 1000W servo motor in today market cannot drive CB4500 withour speed reducer, but our 750W motor can; Other motor use Hall Effect sensor, we use optical sensor; If you tight the machine belt, other motor frame maybe bend, our motor frame will not.... For the NPS, I might be wrong, in China we mainly sell to manufacturers who need high speed, all motors to them must be with needle positioner. Jog dials, needle position and 1/2 stitch adjustment, they are optional for people who need it. "For a decent servo to run a 441 sewing heavy leather you only need to keep it simple" -- thank you, really appreciate it!

It may be a cultural difference. We need the hand-on experience from leather workers to improve the quality of the motor, so we carefully analyze and explain these suggestions. Is there anything wrong? We tested ISM SV-71 650w servo motor, it can't directly drive extra heavy duty leather sewing machine like CB4500, if without speed reducer

WOW, are you servo engineer? Few people can talk about optical controls deeply. Now we use 600 line encoder, the minimum speed on CB4500 is about 10 stitch per miniute. If use 1200 line encoder, in theory the speed can down to 5 SPM.

Thank you very much for sharing, we have already achieved all the points mentioned above😁😁

We have been looking for over 6 months, we have contacted all motor supplier include HO HSING and ISM.... Even ingnore durbility and perfomance, no servo motor can directly drive CowBoy CB4500 if without speed reducer. Kinedyne HM-750T and HM-750L Energy-saving Motor use Hall Effect sensors, HM-750SL and HM-750S servo motor use optical sensors

Needle positioner is necessary, most servo motors with it. In Italy, Kinedyne HM-750SH is replacing Efka servo motor, that's why our price is higher than other Chinese cheap motors.

Only for your information, before we sell our industrial sewing machine with cheap servo motor arround Au$ 140, too many troubles, that's why we start to make servo motor. In Italy and Sweden, they use Effka motor before, now use Kinedyne, saving a lot, instead of spending more..

Thanks, to manufacturers in China, India, Indonesia and other Asian countries, we use Kinedyne HM-750L low cost motor, because they need efficiency, instead of "low speed", compare to other Chinese motor, the advantage is high durability. Yes Kinedyne HM-750SH low speed high torque servo motor is ideal for leather sewing machine. At least, the motor can greatly improve the performance of our leather sewing machine.

I am not trying to promote servo motors here. We want to make the best servo motors for the leather industry, and leatherworker.net is the club of world's top leather players...I need your experience

Thanks for your opinion! Before making Kinedyne servo motor, we sell other brand "servo motor" for our leather sewing machine! The fail rate of board is about 7%. We spent a lot of time and money for service after sale! Cluth motor is too bad for leather sewing machines, so we produce Kinedyne 750L economical servo motor, it is durable motor with good price, but the minimum speed is 300 RPM, customers still need to buy speed reducer! Why waste money to buy speed reducer? We developped Kinedyne HM-750SH low spee, high torque servo motor. Finally we spend less money with high performance servo motor!!

Our competitor is Ho Hsing i90 and Efka servo motor, not Reliable or Sailrite😁

All modern servo motors should be brushless, we developped speed controller and JOG, soft sart (slow start) for better controling speed, especially for beginner.

Yes, digital servo motors will lose torque at low speed, and the motor will vibrate or noise when start up, because the torque is not enough. When get change, please test Kinedyne HM-750SH sero motor from Ryan or Toledo Industrial Sewing Machine, I think you will be surprised with torque and speed control. Really appreciate for your information. Can you test 10 stitches per minitue? See if smoke came from the needle! Now we use 45mm pulley, the lowest sewing speed of CowBoy CB4500 is 10 SPM. If the needle still smoke, we will try to use smaller pulley or modify the program. And when thin leather, we have speed controller that allow you to increase speed in a second. Thanks again for your informtion about the lowest speed!

I 100% understand your opinion, but many modern standard arm sewing machines use JOG dial, for example Durkopp Adler 967, you can see the jog on some other computerized upholstery sewing machine. Ho Hsing i90 is an excellent servo motor for heavy duty industrial sewing machines, the price in China is over $500.00 USD, and about $400 USD in Europe, it is too higher for 205-370 Clone or 441 Clones. Clutch motor is very bad for leather sewing machine, we searched good servo motor for our CowBoy leather sewing machines for about 6 months, no affordable servo motor can work for us, that's why we start to produce servo motor. We has been selling servo motor in United States for about 2 years, all Tandy CowBoy 797 sewing machines come with Kinedyne HM-750SL servo motor. However we must keep innovation. Last October, our Italian dealer suggested the JOG Dial, we make it reality. Last month, our Sweden dealer suggested Half Stitch we made it reality....

Both 110-120V and 220-240V are available from Kinedyne servo motors

Wow！ So professional!! I need some time to sort out the data. I may reply after my vacation (July 15).

I am sure the JOG Dial is strong enough. It is essential for for long arm industrial sewing machine that difficult to reach the handwheel. Most long arm sewing machines come with front wheel, but very difficul to turn it. But why use speed reducer? The minimum speed of servo motor is 50 RPM only, if use it on CowBoy CB4500 or other Juki TSC-441 type machines, the sewing speed is about 12 stitches only per miniute!!!

We are trying to delvelop excellent servo motor for leather sewing machine, by now we have reach below features/functions: 1. Low speed: minimum speed 50 RPM only 2. High torque: an awesome 8.6 Nm of torque 3. Soft Start: make the machine far more manageable 4. “Jog-Dial” (suggested by Italian dealer): ectronical needle positioning 5. Speed Controller: allow you to adjust sewing speed in a second 6. Half Stitch (suggested y Sweden dealer) : micro-adjustment stitch length 7. Needle UP/DOWN position Any requirement else?

You are right, most Energy Saving Servo Motors use hall-effect sensor, instead of photoelectric sensor. Except regular needle positioner synchronizer, JOG Dial (Electronical needle positioning) is new method to adjust the needle position, see below video.

This is a very heavy machine, you need a very powerful servo motor and speed reducer https://youtu.be/rk8VmINzl7o

Sorry, I am not good at technology.

Thanks for your idea, users might be not happy to adjust some parameters in motor management menu, so we set wide range ratio in motor board, acocording to HT-SP03 Bearing drive Speed Reducer, the gear ratio is 1:3 (https://www.cowboysew.com/slow-speed-sewing-machine.htm)