Hertz spindles from Turkey - Page 4


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Thread: Hertz spindles from Turkey

  1. #37
    ericks
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    Default Re: Hertz spindles from Turkey

    The shoe has not yet fallen off....the drive is low cost but works great 2.2Kw

    Hertz spindles from Turkey-dust3-jpgHertz spindles from Turkey-drive3-jpg

    Attached Thumbnails Attached Thumbnails Hertz spindles from Turkey-dust3-jpg   Hertz spindles from Turkey-drive3-jpg  


  2. #38
    ericks
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    Default Re: Hertz spindles from Turkey

    Quote Originally Posted by v2tiller View Post
    Hi erick. Have been followig your other thread and then found this one.
    Didn't realize you were in Aus. Where abouts? Im in qld wide bay. I may have ordered one of those spindles if i had seen this thread. I was looking at hertz and tekno. I got a teknomotor from daman cnc. He was great to deal with. Shipping was only 50€ from him cant believe how much hertz charged. My router is not finished yet i really need to update my thread. But just got my motorgoing motor going with a delta vfd. Anyway good to see you are happy now.
    Cheers.
    Barry.
    Hi Barry, i am in Adelaide/Aldinga Beach. You chose well with the Teknomotor and Delta VFD. The teknomotor i wanted to buy was too expensive....the delta drives are good, i have installed a few. Please send me a link to your build i would love to check it out Thanks...

    ps...my shipping was 200 euro, thats why i got so upset when they sent me the wrong motors



  3. #39
    ericks
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    Default Re: Hertz spindles from Turkey

    Decided to take the spare Hertz motor to work tonight. It's name plate indicates that it's a 380V motor...they told me that it was incorrectly labelled. When i did some simple torque tests i found that either it was not 2.0 Kw or it was indeed wired for 380V.

    We will see tonight as i plan to connect it to a 380V drive....i honestly hope it is a 2.0 Kw motor. Obviously i will take care in testing cause i really don't want to damage this motor. If it's a 380V then i plan to either buy a 230 to 380V Sako drive or sell the motor



  4. #40
    ericks
    Guest

    Default Re: Hertz spindles from Turkey

    If anyone here in Australia is interested in this motor please let me know. I would like to use it myself if it's indeed 380V 2.0 Kw but the drive needed for 230V to 380V would not fit in the small space in the control panel. I would be willing to supply the motor with a drive, set up to your requirements



  5. #41
    ericks
    Guest

    Default Re: Hertz spindles from Turkey

    Well...after some testing i would say it's not a 2.0 Kw/380V motor
    More like a 1.1Kw/220V motor...will do a few more tests at home.



  6. #42
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    Default Re: Hertz spindles from Turkey

    Hey erick. Just updated my build thread. Not sure how to post link but look for steel/aluminum fixed gantry thread. Should be up the top somewhere.
    Cheers.



  7. #43
    ericks
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    Default Re: Hertz spindles from Turkey

    Thanks...just had a look, great job mate



  8. #44
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    Default Re: Hertz spindles from Turkey

    Quote Originally Posted by ericks View Post
    Well...after some testing i would say it's not a 2.0 Kw/380V motor
    More like a 1.1Kw/220V motor...will do a few more tests at home.
    How are you testing the torque?

    You should be able to see how much power is being pulled from the vfd. Torque and power are two different things though. There is no reason why a 2.2kw spindle should automatically produce more torque than a 1.5kw one. It all depends on the base speed.

    i.e. a Spindle that hits 1.5kw at 12000 rpm would produce more torque than a spindle that reaches 2.2kw at 24000.

    If you find out the base speed of the motor then you can work out how much torque the spindle should have. You can then tell on the vfd if it is drawing 2.2kw at 240v at the base speed.



  9. #45
    ericks
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    Default Re: Hertz spindles from Turkey

    Been busy with other stuff....will re visit the motor. Like i said, i ordered two motors....1.5KW/18000rpm/220V and a 2.0Kw/18000rpm/220v. When they arrived the 2.0 KW motor plate indicated 380V/2.0Kw.
    When i contacted them they asked me to open the terminal box so they can check if its a 220v or 380v motor. They said it was wrongly labelled 380v...its actually a 220v/2.0 Kw motor. I am not convinced that it's a 2.0 Kw motor....
    The initial test i did on both motors indicated that the 1.5Kw motor had more torque....reason i though possibly the motor was a 380v motor....well i got motor heating when running it at 380V, more heating than i would like/expect. Best is to do proper load tests. I was doing my initial tests at the same speeds and loads....both motors run at the same speed through the freq range. So i can confirm that both are 18000rpm motors



  10. #46
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    Default Re: Hertz spindles from Turkey

    Quote Originally Posted by ericks View Post
    Been busy with other stuff....will re visit the motor. Like i said, i ordered two motors....1.5KW/18000rpm/220V and a 2.0Kw/18000rpm/220v. When they arrived the 2.0 KW motor plate indicated 380V/2.0Kw.
    When i contacted them they asked me to open the terminal box so they can check if its a 220v or 380v motor. They said it was wrongly labelled 380v...its actually a 220v/2.0 Kw motor. I am not convinced that it's a 2.0 Kw motor....
    The initial test i did on both motors indicated that the 1.5Kw motor had more torque....reason i though possibly the motor was a 380v motor....well i got motor heating when running it at 380V, more heating than i would like/expect. Best is to do proper load tests. I was doing my initial tests at the same speeds and loads....both motors run at the same speed through the freq range. So i can confirm that both are 18000rpm motors
    The top speed and the base speed are two different things. You can have two 2.2kw spindles with a top speed of 24000 rpm but one could have a base speed of 12000 rpm and the other could be 24000 rpm. In that example, the 2.2kw spindle with the 12000 rpm base speed would have twice the torque of the other, even though they are both 2.2kw and both have top speeds of 24000 rpm.

    Motors have constant torque up to the base speed and (in scenarios where the top speed is higher than the base speed) torque gradually declines as the speed rises above the base.

    If both of your spindles have a base speed of 18000 rpm then the 2.2kw spindle will have slightly more torque than the 1.5kw if it is set up right (and not broken).

    Torque is just horsepower at a given speed. 2.2kw at 18000 rpm is always 0.9 foot pounds. A motor hitting 2.2kw at 12000 rpm is always 1.3 foot pounds. See for yourself:

    https://spicerparts.com/calculators/...que-calculator

    If both spindles are reaching 18000 then it is unlikely that you have the wrong voltage. I have never tried it but my bet is that if you push 380v into a 240v spindle it would run too fast for a short time before burning out (if it worked at all). It sounds like Hertz make duel voltage spindles like mine. My spindle can be wired for 240v or 380v. You can look in the spindle terminal box to see which wire pattern your one has.

    I suggest that you go back to the manufacturer to get a correct name plate. I can't see how you could set it up correctly (and safely) without this info.



  11. #47
    ericks
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    Default Re: Hertz spindles from Turkey

    Mate i know how motors work...
    The speed of these motors has nothing to do with applied voltage....whether you apply 220 v or 380 volts....the speed will be the same if the poles are the same and the freq applied are the same. No these motors are internally connected, so you don't have the option to change between star and delta. If that were the case then i would not have to wonder what the true applied voltage should be. If you read correctly you will find that i did apply 380 volts to the motor. Many 220 volts motors will start and run on a too high voltage but not for long.....like i said there was some heating but not extreme, but enough to convince me that this is in fact a 220v motor. With regards to speed, they both 300HZ/18000rpm motors. I will not run them past this speed even though i could. Fact is i paid for a 1.5kw motor that i received but the supposedly 2.0kw motor is not that.



  12. #48
    ericks
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    Default Re: Hertz spindles from Turkey

    Going back to the manufacturer won't help...i tried that. Like i said i will do more tests when i get the time



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