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  1. #1
    Join Date
    Oct 2013
    Posts
    7

    Rotary switch rebuild?

    I have a twelve postition rotary encoder on a CNC machine that keeps going out on me, and I'd like to find a cheaper fix than the $700 buck to replace it.
    So, I'm looking to see if you have knowledge of someone that does these types of rebuilds.

    It's a simple magnetic rotary switch, twelve position, with thirteen wires, with what I imagine are small reed switches that are activated by the magnet. I can put an Ohm meter on it and see which ones are working, and which ones are not. It has steel bars that run up the sides from the circuit board buried in the silicone caulk. I'm pretty sure there is a replacable switch on the board that is going out. It is the most used positions that are going out. I could probably maybe possibly do it myself, except the damn caulk sucks. Hopefully somebody has a way to remove it without doing damage to the board, which I do not.

    So, if you have any contacts for me, It'd be appreciated.
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  2. #2
    Join Date
    Dec 2003
    Posts
    24216

    Re: Rotary switch rebuild?

    I have a re-build service for them. Me.
    $300.00
    Virtually have to replace all sensors not really possible to do a couple.
    Al.
    CNC, Mechatronics Integration and Custom Machine Design

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

  3. #3
    Join Date
    Dec 2007
    Posts
    2134

    Re: Rotary switch rebuild?

    If they're reed switches wouldn't that be unusual for any to go, let alone many going?

    Sure they're not hall effect switches instead, that would make more sense to me? In which case dirty/noisy power might be what's killing them?

    cheers, Ian
    It's rumoured that everytime someone buys a TB6560 based board, an engineer cries!

  4. #4
    Join Date
    Dec 2003
    Posts
    24216

    Re: Rotary switch rebuild?

    They are reed switches.
    The 8 posn are fitted as a turret indicator on lathes and go frequently.
    Al.
    CNC, Mechatronics Integration and Custom Machine Design

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

  5. #5
    Join Date
    Oct 2013
    Posts
    7

    Re: Rotary switch rebuild?

    Quote Originally Posted by aarggh View Post
    If they're reed switches wouldn't that be unusual for any to go, let alone many going?

    Sure they're not hall effect switches instead, that would make more sense to me? In which case dirty/noisy power might be what's killing them?

    cheers, Ian

    That's why I mentioned that I Ohm'ed 'em so they would not be confused as possibly being Hall Effect Switches.........:cheers:

    Quote Originally Posted by Al_The_Man View Post
    They are reed switches.
    The 8 posn are fitted as a turret indicator on lathes and go frequently.
    Al.
    This is a twelve position switch........
    Anyways, PM, me your contact info. I might send a couple your way.

  6. #6
    Join Date
    Dec 2007
    Posts
    2134

    Re: Rotary switch rebuild?

    Sorry I missed the OHM bit, but i'm amazed they go as much as they do as normally reed switches are fairly robust, unless these are so fine they deform from the magnetism over time?

    cheers, Ian
    It's rumoured that everytime someone buys a TB6560 based board, an engineer cries!

  7. #7
    Join Date
    Dec 2003
    Posts
    24216

    Re: Rotary switch rebuild?

    PM sent.
    Al.
    CNC, Mechatronics Integration and Custom Machine Design

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

  8. #8
    Join Date
    Oct 2013
    Posts
    7

    Re: Rotary switch rebuild?

    Quote Originally Posted by aarggh View Post
    Sorry I missed the OHM bit, but i'm amazed they go as much as they do as normally reed switches are fairly robust, unless these are so fine they deform from the magnetism over time?

    cheers, Ian
    Yeah, the first one lasted about 12 years, I'm told.. They must have figured out they weren't selling enough replacement parts, so they made the next one so it only lasted about two years........ and the next one, and the next one..

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