Baldor CDP3445 spindle motor


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Thread: Baldor CDP3445 spindle motor

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    Member crazybrit's Avatar
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    Default Baldor CDP3445 spindle motor

    [sorry if this is the wrong forum, I couldn't find a forum specific to spindle motors, odd as there are so many forums here ;-)]

    Does anyone know anything about the Baldor CDP3445 motor?

    I just picked up a CNC lathe and it came with a brand new CDP3445. I was told this was a spare motor for the lathe but it's not. The lathe does use a Baldor but it's a smaller higher rpm motor than the CDP3445.

    I'm probably going to end up selling it and was looking for info on it. What if any CNC machines used it etc so I could best list it. I refuse to use eBay.

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    Default Re: Baldor CDP3445 spindle motor

    The search comes up as https://www.baldorvip.com/Product/In...id=CDP3445-V12
    It shows it is a 1HP, 12VDC 84amp motor 1800RPM.

    What does the lathe use at present for the spindle?

    Last edited by Al_The_Man; 08-28-2022 at 05:19 PM.
    CNC, Mechatronics Integration and Custom Machine Design

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    Default Re: Baldor CDP3445 spindle motor

    Hi,
    DC motors of that power rating at such a low voltage tend to be very expensive.

    I have found them installed in boats for refrigeration. Winch motors tend to be series wound motors, not unlike the starter motor in your car, and are for intermittent use.
    The motor you have linked to is meant for continuous service, and that makes them big and pricy.

    Craig



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    Default Re: Baldor CDP3445 spindle motor

    If it is a modern motor, it is most likely a P.M. field (Shunt Field) motor.

    CNC, Mechatronics Integration and Custom Machine Design

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    Default Re: Baldor CDP3445 spindle motor

    I know. I linked to this in my original post.

    What does the lathe use at present for the spindle?
    It uses this below. It's probably half the size of the CDP3445

    https://www.cnczone.com/forums/servo...tml#post793566



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    Default Re: Baldor CDP3445 spindle motor

    Quote Originally Posted by joeavaerage View Post
    Hi,
    DC motors of that power rating at such a low voltage tend to be very expensive.

    I have found them installed in boats for refrigeration. Winch motors tend to be series wound motors, not unlike the starter motor in your car, and are for intermittent use.
    The motor you have linked to is meant for continuous service, and that makes them big and pricy.

    Craig
    It's $1100 new (really new). I see "new in (opened box)" on FleaBay for $500. Used $200 up.

    I'll need to find some kind of controller to run it, cheap&chinese probably. May try to list it on Craigslist since it doesn't seem CNC related.



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    Default Re: Baldor CDP3445 spindle motor

    Hi,

    It's $1100 new (really new).
    I would say that $1100 for a new 1hp DC motor fits my definition of 'a pricey' motor.

    As a comparison I pay $438USD for a Delta B2 series 750W (1hp) servo AND servo drive including cables.........so less than half the money for a servo and drive of the same power.
    Why anyone would pay $1100 for a 1hp motor....unless you had a particular need that could not be met in any other way, is beyond me.

    If you are looking to re-power your lathe may I recommend modern AC servos by either Delta (Taiwanese brand made it China) or DMM (Canadian brand made in China) as
    servos/drives of good quality, excellent support and documentation and most importantly free and comprehensive set-up and tuning software at very fair prices.

    Craig



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    Default Re: Baldor CDP3445 spindle motor

    Quote Originally Posted by joeavaerage View Post
    If you are looking to re-power your lathe may
    I'm not. Per first post I was just looking for more info on the motor. I'm likely going to sell it as it seems to be the wrong type to serve as a backup for my lathe.

    I'll figure out how to power it and assuming it's good list it for $500 on Craigslist. I won't sell on eBay anymore.

    Thanks for everyone's help.



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    Default Re: Baldor CDP3445 spindle motor

    For that size of DC motor, the 90v/190vdc ex-treadmill versions are popular and together with the MC2100 TM control board makes a good PWM spindle motor/controller combo.
    The motors range from ~2hp to 3.5hp.
    For the one in the OP, you may have a problem obtaining a controller of that size for 12vdc.

    CNC, Mechatronics Integration and Custom Machine Design

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    Default Re: Baldor CDP3445 spindle motor

    Quote Originally Posted by crazybrit View Post
    [sorry if this is the wrong forum, I couldn't find a forum specific to spindle motors, odd as there are so many forums here ;-)]

    Does anyone know anything about the Baldor CDP3445 motor?

    I just picked up a CNC lathe and it came with a brand new CDP3445. I was told this was a spare motor for the lathe but it's not. The lathe does use a Baldor but it's a smaller higher rpm motor than the CDP3445.

    I'm probably going to end up selling it and was looking for info on it. What if any CNC machines used it etc so I could best list it. I refuse to use eBay.
    Here is a PDF for it not a motor that you would find everyday they all have a purpose

    Attached Files Attached Files
    Mactec54


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    Default Re: Baldor CDP3445 spindle motor

    So all the links above are for the 12V version.

    I have the 90V. https://new.abb.com/products/7BCDP3445/cdp3445

    What is the most inexpensive way to power this, for the purposes of basic testing (in order to sell).

    Baldor CDP3445 spindle motor-label-jpg



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    Default Re: Baldor CDP3445 spindle motor

    A 12v automotive battery will show up any major defects, just run quite a bit slower, but still with some power.
    Test for binding, noise etc, if it runs nice an quiet, albeit slowly, it is a fair test.
    Bridge rectified 120v is a little high for it.

    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.


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