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Where to find larger coolant inlets for 1.5KW water cooled Spindle ?

Discussion in 'Helpful Tools' started by ashish B, Nov 12, 2018.

  1. ashish B

    ashish B Journeyman
    Builder

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    Hello folks

    I have been using a 1.5 KW Hengyang water cooled spindle on C-beam machine. I am using a small radiator with a 120mm fan. I used 80:20 distilled water to car coolant mixture that runs in a closed loop. I have not seen the coolant temps go over 78 degree F. All well but I want to get rid of additional plumbing I had to create .
    The coolant lines from pump and radiator are 3/8th lines but the spindle has small inlets and I was only able to fit 3/16 lines. I had to find a set of converting steel nipples and add additional H/W to hold piping.

    I am wondering if I could instead change the nipples on that came with the spindle that would allow me to directly attach a 3./8th pipe. Please advise.
     

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  2. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
    Staff Member Moderator Resident Builder Project Maker Contest Winner! Builder

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    You should be able to, the nipples can unscrew from the spindle bodies (at least on the 65mm 1.5kw I had) - then just find a matching thread pneufit fitting for 3/8th (its been a couple years, I think it was 1/4BSP but check yours - dont trust me on that) (I like those push-fit pneufit ones, both acrylic and nylon tube locks nicely in them)
     
  3. ashish B

    ashish B Journeyman
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    I was able to remove and check at home depot. They have nothing matching. It looks to be 8mm threads. Where did you find your fittings ?
     
  4. GrayUK

    GrayUK Openbuilds Team Elder
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    Peter Van Der Walt likes this.
  5. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
    Staff Member Moderator Resident Builder Project Maker Contest Winner! Builder

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    Ebay, or a more specialised shop (Hardware stores stock for 'average joes' - go checkout a welding or air tool supplier, here in ZA the goto is EIS https://www.eis.co.za/ - find the local equivalent in your country (IE more specialised "engineering" hardware suppliers)
     

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