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IndustryArena Forum > MetalWorking Machines > CNC "do-it-yourself" > influence of heat on spindle bearing of a milling machine
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  1. #1
    Hello everybody,

    I am currently constructing the bearing for a drive spindle of a vertical milling machine.
    However I only want to use this machine for dry processing and as there will be relatively high temperatures I need to consider this fact in the construction.
    Can anybody help me: how do I take the thermal expansion into consideration or rather how high does it need to be??

    Thanks a lot in advance

  2. #2
    Hello,
    The thermal expansion is relative and it complies with the measurements, the storage and the outside conditions.
    Just to be simple I guess you are going to use a motor spindle. There you can only optimize the cooling system.
    Give us a bit more information then we can help you better.

    Greetings

  3. #3
    Hello,
    The thermal expansion is relative and it complies with the measurements, the storage and the outside conditions.
    Just to be simple I guess you are going to use a motor spindle. There you can only optimize the cooling system.
    Give us a bit more information then we can help you better.
    Greetings


    Hello,
    Yes indeed, we will use a motor spindle.
    Given conditions:
    Engine speed max 12000 , driving power 4 KW, arbor diameter of the spindle 50mm, the transmission to the spindle should be done over a pulley( that’s also not up to date that method, isn’t it?).
    The bearing spacing is 200mm.

    I am thinking about an lubricate the bearing with oil, in order to keep temperature low.


    Greetings

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