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IndustryArena Forum > CNC Plasma, EDM / Waterjet Machines > Waterjet General Topics > Has anyone bought from Changzhou Longs-Motor?
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  1. #1
    Join Date
    Sep 2005
    Posts
    31

    Has anyone bought from Changzhou Longs-Motor?

    http://cgi.ebay.com/3Axis-Nema-34-St...ht_3601wt_1139 and
    http://cgi.ebay.com/4Axis-Nema-34-St...ht_3144wt_1139

    Looking at buying one of them, but prices seem too good to be true. Any opinions? Chinese stuff, but would it work?

  2. #2
    Join Date
    Mar 2009
    Posts
    924
    Quote Originally Posted by MrArmyAnt View Post
    http://cgi.ebay.com/3Axis-Nema-34-St...ht_3601wt_1139 and
    http://cgi.ebay.com/4Axis-Nema-34-St...ht_3144wt_1139

    Looking at buying one of them, but prices seem too good to be true. Any opinions? Chinese stuff, but would it work?
    I would try to buy from sellers with ratings over 98.5%. They also have not sold many of them on ebay. Support would be a problem I think. Try torcheads site. http://www.candcnc.com/ At least you can harass him here on the zone.

    WSS

  3. #3
    Join Date
    Jan 2010
    Posts
    35
    Quote Originally Posted by MrArmyAnt View Post
    http://cgi.ebay.com/3Axis-Nema-34-St...ht_3601wt_1139 and
    http://cgi.ebay.com/4Axis-Nema-34-St...ht_3144wt_1139

    Looking at buying one of them, but prices seem too good to be true. Any opinions? Chinese stuff, but would it work?
    I can tell you this kit is not compatible.
    1: 24V power supply is too low for this motor
    2: The Motor has low current but very high Inductance.
    3: The total cost is more than $500 ($385.90 + $125.90)

    check here
    http://www.kelinginc.net/CNCPackage.html

    David

  4. #4
    Join Date
    Sep 2005
    Posts
    31
    Dang. Well I need a custom kit, and am running something like 4:1, will it be able to mill aluminum at 380oz? it doesnt need to be fast. Also someone had a link somewhere to a 12ft rack for 80 dollars?

    Thanks in advance.

  5. #5
    Join Date
    Sep 2005
    Posts
    31
    wait, by the way, nema 23 can do 570oz?

    http://cgi.ebay.com/3-Axis-Stepper-M...#ht_779wt_1137

  6. #6
    Join Date
    Apr 2010
    Posts
    0

    Longsmotor CNC kit from Ebay

    I recently bought one of these kits and it has no documentation. If anyone out there has this kit up and running with Mach3 please take a look at the schematic link and let me know about any wiring problems you can spot, thanks!

    The machine breakout board has a green LED lit and the motor driver has a red LED lit (think this is where the problem is).

    ImageShack® - Online Photo and Video Hosting

  7. #7
    Join Date
    Nov 2010
    Posts
    0
    I believe the following are problems.

    Your pulse and direction signals should be to the negative terminals on the drivers from the BOB
    Feed +5v to the positive terminals of the step and direction of the drivers
    Enable - isn't usually required
    Enable + should be 5v

    The only 24v you need is to the DC pwr and ground on the driver.



    Please wait for someone else to confirm before making the changes.

  8. #8
    Join Date
    Sep 2010
    Posts
    7

    Mary Chen from Longs Motor

    Hello, everyone, i am Mary Chen from Longs Motor, this is our company official ebay store: Longs Motor Co Ltd items - Get great deals on CNC Router, Hybrid Stepper Motor items on eBay Stores!. For our company website, that is Stepper Motor/Stepper Gearmotor/Stepper Motor Driver wholesaler and supplier.

    I just checked talkers said that didnt get the instructions. Usually for manuals and instruction, we usually sent them by electrical files, which is more convininent. So when you received the packages and didnt know how to wire, you can contact us, and we will send them one by one.

    After you read these manuals and still dont know how to wire, you can also email to us ([email protected]), we will helo you in technique.

    In addition, if anyone who has some questions about our company products or using, you can leave messges to me in ebay or CNCzone or [email protected].

    Mary

  9. #9
    Join Date
    Apr 2010
    Posts
    0

    Cool

    Quote Originally Posted by 4R8 View Post
    I believe the following are problems.

    Your pulse and direction signals should be to the negative terminals on the drivers from the BOB
    Feed +5v to the positive terminals of the step and direction of the drivers
    Enable - isn't usually required
    Enable + should be 5v

    The only 24v you need is to the DC pwr and ground on the driver.



    Please wait for someone else to confirm before making the changes.
    -----------------------------------------------------------------------

    Thank you so much for your input. I was able to replace the dead on arrival kit power supply, and I hooked up the kit with the break out board power by a separate 5V supply.



    As soon as I connected the parallel port, the Break out board LED would go dim. - I was unable to get the motors to move using Mach3 V2.0 - Does this kit require a config file?
    -------------------------------------------------------------------------


    I also tried using the break out board without the external 5V power supply. JP1 and JP2 are in place, but the Green LED is not lit. (Is the board broken?)
    Again I was unable to get the motors to move using Mach3 V2.0 - Does this kit require a config file? Should I try replacing the break out board?






  10. #10
    Join Date
    Sep 2010
    Posts
    7

    Mary Chen from Longs Motor

    Hello, dear madam or sir,

    Our ebay store has some update. That is the newest one:

    CNC Router, Hybrid Stepper Motor items in Changzhou Longs Motor Co Ltd store on eBay!

    If anyone has questions about our company products, please feel free to contact me. My email address " [email protected]"

    Best regards

    Mary Chen

    Stepper Motor/Stepper Gearmotor/Stepper Motor Driver wholesaler and supplier

    Quote Originally Posted by longsmotor99 View Post
    Hello, everyone, i am Mary Chen from Longs Motor, this is our company official ebay store: Longs Motor Co Ltd items - Get great deals on CNC Router, Hybrid Stepper Motor items on eBay Stores!. For our company website, that is Stepper Motor/Stepper Gearmotor/Stepper Motor Driver wholesaler and supplier.

    I just checked talkers said that didnt get the instructions. Usually for manuals and instruction, we usually sent them by electrical files, which is more convininent. So when you received the packages and didnt know how to wire, you can contact us, and we will send them one by one.

    After you read these manuals and still dont know how to wire, you can also email to us ([email protected]), we will helo you in technique.

    In addition, if anyone who has some questions about our company products or using, you can leave messges to me in ebay or CNCzone or [email protected].

    Mary

  11. #11
    Join Date
    Sep 2010
    Posts
    7

    Mary Chen from Longs Motor

    Hello, dear madam or sir,

    Our ebay store has some update. That is the newest one:

    CNC Router, Hybrid Stepper Motor items in Changzhou Longs Motor Co Ltd store on eBay!

    If anyone has questions about our company products, please feel free to contact me. My email address " [email protected]"

    Best regards

    Mary Chen

    WWW.LONGS-MOTOR.COM

    Quote Originally Posted by longsmotor99 View Post
    Hello, everyone, i am Mary Chen from Longs Motor, this is our company official ebay store: Longs Motor Co Ltd items - Get great deals on CNC Router, Hybrid Stepper Motor items on eBay Stores!. For our company website, that is Stepper Motor/Stepper Gearmotor/Stepper Motor Driver wholesaler and supplier.

    I just checked talkers said that didnt get the instructions. Usually for manuals and instruction, we usually sent them by electrical files, which is more convininent. So when you received the packages and didnt know how to wire, you can contact us, and we will send them one by one.

    After you read these manuals and still dont know how to wire, you can also email to us ([email protected]), we will helo you in technique.

    In addition, if anyone who has some questions about our company products or using, you can leave messges to me in ebay or CNCzone or [email protected].

    Mary

  12. #12
    Join Date
    Sep 2013
    Posts
    1

    Re: Has anyone bought from Changzhou Longs-Motor?

    I buy a kit from them on ebay last year and now I am trying to set it up but there is no info and they send me a very very bad drawing of the wiring I try different wirings and still no response from mach3

  13. #13
    Join Date
    Apr 2015
    Posts
    27

    Re: Has anyone bought from Changzhou Longs-Motor?

    I got a 3 axis nema setup from longs-motor.. I just received the wiring diagram as well.. It makes sense.. It doesnt seem too complicated, It just refers to needing an additional 5vdc/2A power supply for the breakout board.

  14. #14
    Join Date
    Apr 2015
    Posts
    27

    Re: Has anyone bought from Changzhou Longs-Motor?

    Quote Originally Posted by longs_motor View Post
    Hi,
    This is Cherry from Longs Motor.
    You dont need to order additional power +5V for the board,the detailed info we can send to your email,so please send your confuse to [email protected]
    Thanks
    Regards
    Cherry
    Yes you do. Ihave the 3 x nema34 with 3 x 60v power supply units. There is no other way of powering the breakout board which comes with it (DB25a) unlss you use an additional power supply. This was also instructed by Mary @ longs motor.

    The wiring for these units uses the negative as the driver for pulse step and direction. So you combine the positives as a constant power and connect the -5vdc from the breakout board to the stepper drivers. (EG: pin 1 goes to negative step on the driver ) this is within the documentation I received from longs motor.

    Anyway fellow forum users.. The support for these things are in very broken English and can be hard to explain but my units have the accuracy and repeatability down to 0.01mm / 10 microns using chinese ballscrews and I have no problem with them so far and even in direct drive without pulleys, they have enough power to stall a 1kw motor.

    here is a demo and also my settings using LinuxCNC https://www.youtube.com/watch?v=58iKd2Mioes

    I hope this helps...

  15. #15
    Join Date
    Jun 2015
    Posts
    943

    Re: Has anyone bought from Changzhou Longs-Motor?

    I bought a kit from them a year ago, one drive was not working. Sent them a few e-mails, they never got back to me. I assume that support also non-existent.

  16. #16
    Join Date
    Aug 2015
    Posts
    10

    Re: Has anyone bought from Changzhou Longs-Motor?

    Could you provide us the detailed info?
    We should check it with our engineer,and we have our own EU warehouse now,if it was our falut ,we can send it from our Eu warehouse to you directly now.
    Please contact us : [email protected]
    Thanks.
    Reagrds
    Cherry

  17. #17
    Join Date
    Oct 2014
    Posts
    12

    Re: Has anyone bought from Changzhou Longs-Motor?

    I've purchased a couple of kits from them. One of the kits is still in the box while the other is on my just-finished CNC Router.

    The CNC Router setup has what seems to be a dead-on-arrival power supply. Of the 3 power supplies that shipped, 2 work while the third makes a clicking sound.

    I've sent them an e-mail and await their response.

  18. #18
    Join Date
    Sep 2010
    Posts
    7

    Re: Has anyone bought from Changzhou Longs-Motor?

    Quote Originally Posted by Teddz View Post
    I've purchased a couple of kits from them. One of the kits is still in the box while the other is on my just-finished CNC Router.

    The CNC Router setup has what seems to be a dead-on-arrival power supply. Of the 3 power supplies that shipped, 2 work while the third makes a clicking sound.

    I've sent them an e-mail and await their response.


    Hi there, we check our sales history, we check you only bought 1 set of 3-axis Nema 34 stepper motor 1232 oz.in on Ocb 7th, 2014 on Ebay. We did not find that you buy couple of kits from our company. So please make a confirmation for it at your side.

    And it has been a year already since you receive it. We didnt know what happen in these past 1 year after you receive this parcel. I also replied to you in email, you can have a check.

    Regards

    Mary

  19. #19
    Join Date
    Oct 2014
    Posts
    12

    Re: Has anyone bought from Changzhou Longs-Motor?

    Hi Mary,

    Your records are wrong then. I have a 3-axis set of nema 23 270oz that were bought through ebay... the contact email is [email protected]. you may want to ask him. I'll email you the info.

  20. #20
    Join Date
    Sep 2010
    Posts
    7

    Re: Has anyone bought from Changzhou Longs-Motor?

    Quote Originally Posted by Teddz View Post
    Hi Mary,

    Your records are wrong then. I have a 3-axis set of nema 23 270oz that were bought through ebay... the contact email is [email protected]. you may want to ask him. I'll email you the info.
    Yes, i contact Peter and found it. And will reply your email

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