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  1. #1
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    ZX4075 BT30/ISO30 Spindle

    Hi guys, I'm loosing my mind looking for a BT30/ISO30 spindle for my ZX7045, can't find it anywhere, well I'm lying since I found a company in germany that sells the full spindle in ISO30 but I'm waiting for the damn thing since april and I'm about done waiting since every time I ask they say that the'll have it in two months... so I'm looking for other suplier... can anyone help me???

  2. #2
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    Re: ZX4075 BT30/ISO30 Spindle

    The owner of MTW might have some left (in Toronto, Canada). He's on facebook here https://www.facebook.com/Machine-Too...1563229339863/

    Mike

  3. #3
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    Re: ZX4075 BT30/ISO30 Spindle

    thanks, I'll give them a call to see if they have some!
    for the price I might get 2 just in case...

  4. #4
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    Re: ZX4075 BT30/ISO30 Spindle

    Quote Originally Posted by ninefinger View Post
    The owner of MTW might have some left (in Toronto, Canada). He's on facebook here https://www.facebook.com/Machine-Too...1563229339863/

    Mike
    thanks for the help, I ended up buying 2... it will take a while to get here but it's a done deal!

  5. #5
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    Re: ZX4075 BT30/ISO30 Spindle

    Glad I could help, I bought 1 as a spare for my mill as they seem rare enough and I want to go belt drive eventually so having 1 to play with is good.

    Mike

  6. #6
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    Re: ZX4075 BT30/ISO30 Spindle

    Quote Originally Posted by ninefinger View Post
    Glad I could help, I bought 1 as a spare for my mill as they seem rare enough and I want to go belt drive eventually so having 1 to play with is good.

    Mike
    I might have a problem tho... can you confirm me the bottom bearing ID (the one next to the cone)? from what I'd seen I might have a problem there since mine has a 32008 bearing (from the mill book, I'll have to check it for real if that's exactly what's inside) that's a 40mm ID, while at least, another guy here in the forum has a 35mm ID on his Bolton ZX45... I guess it can be sleeved if properly made since mine is suposelly bigger... will have to see that... but I would apreciate if you could check that for me.. the deal is done either way, won't go back!

  7. #7
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    Re: ZX4075 BT30/ISO30 Spindle

    Yes, mine is 35mm at the taper end and 30mm at the top just below the splines.

  8. #8
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    Re: ZX4075 BT30/ISO30 Spindle

    yeah, as I thought.... on my mill manual states that bearing as a 32008 (40mm ID), I'll have to check if that's real on the machine. If it is I'll have to go to a professional machinist to sleeve the spindle, I think it's quite doable...
    thanks for the info

  9. #9
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    Re: ZX4075 BT30/ISO30 Spindle

    confirmed today that my machine indeed has a 32008 bearing on. shame the BT30 shaft isn't 40mm also, it would be stronger... this way I'll need to add a sleeve. anyway, it's very doable, also need to have some pulleys done to convert the machine to belt drive.

  10. #10
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    Re: ZX4075 BT30/ISO30 Spindle

    Quote Originally Posted by vakeiros View Post
    Hi guys, I'm loosing my mind looking for a BT30/ISO30 spindle for my ZX7045, can't find it anywhere, well I'm lying since I found a company in germany that sells the full spindle in ISO30 but I'm waiting for the damn thing since april and I'm about done waiting since every time I ask they say that the'll have it in two months... so I'm looking for other suplier... can anyone help me???
    Chapter Oak Automation nt 30 spindle could be converted over to be with a little work.

    Sent from my SM-T550 using Tapatalk

  11. #11
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    Quote Originally Posted by gearhead406 View Post
    Chapter Oak Automation nt 30 spindle could be converted over to be with a little work.

    Sent from my SM-T550 using Tapatalk

    Thanks gearhead406 I'm already waiting for 2 units from Canada, should be here in a few weeks!

  12. #12
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    Re: ZX4075 BT30/ISO30 Spindle

    I bought the ISO30 spindle for my RF45 clone from the mentioned german supplier (www.kami-maschinen.de) and to my slight shock the listed 75mm OD of the sleeve doesn't fit properly the bore on my mill head (there is much more play than the original MT4 spindle). I will try to measure the sleeve's OD exactly but it wiggles inside if I don't lock the spindle to about 0,08 mm (3 thousands of an inch) which is unacceptable for me and will definitely throw off proper tramming and spindle stability.

    But the biggest surprise was that the bearings are full of black oxidized steel debris from the inside of the sleeve that was not machined after it was hardened (the original MT4 spindle sleeve was machined on every ID surface). I did not turn on the motor because I would immediately start destroying the bearing. Not to mention the spindle sleeve inside was full of bearing grease - in the weight of one butter stick which is alot!

    The only good thing was that I measured the runout to be only 0,006 mm (2 ten thousands) on the taper in cold state without warmup.

    So looks like I've got a spindle from a bad batch. I'm thinking to put the ISO30 shaft into the original previously MT4 sleeve because it fits much more snugly my milling head bore. We'll see how it goes.

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