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  1. #11
    Years ago I ordered some BK bearing blocks and they did not come with the spacer tubes (2off). What happens is the ballscrew gets clamped up hard against the seals (the parts left inside your blocks with the bearings removed) and they are then very difficult to rotate. I donít know why they sometimes send them out like this.

    I had a friend turn up 2 spacers on his lathe and all was well.

    Either ask the supplier where the spacers are
    Or get someone to make up some spacer tubes

    If you check my YouTube channel (routercnc) episode 5 shows me building up a ballscrew and mount. Note the brass buffers are nice to have but could still work without. Here you will see the spacers you need.

    In terms of bearings then you have the budget ones. As Clive says you can optionally upgrade to AC bearings but either way you need the spacers.
    Building a CNC machine to make a better one since 2010 . . .
    MK1 (1st photo), MK2, MK3, MK4

  2. #12
    I talked with the seller and it was a heated phone call and he said i didn't know what i am talking about and went to say that it's because of my inexperience that i am not able to get them to work right but at the end told me to ship the ballscrews and the blocks and get my money back so i am going do that and never am i gonna deal with him again. Thanks for the help guys much appreciated @Clive @routercnc.
    Last edited by Fancy; 16-01-2019 at 02:47 PM.

  3. #13
    Quote Originally Posted by Fancy View Post
    I talked with the seller and it was a heated phone call and he said i didn't know what i am talking about and went to say that it's because of my inexperience that i am not able to get them to work right but at the end told me to ship the ballscrews and the blocks and get my money back so i am going do that and never am i gonna deal with him again. Thanks for the help guys much appreciated @Clive @routercnc.
    You only need to have the spacer tubes made. Changing the bearings to AC type will be better. If you send them all back you may not get the postage back.
    ..Clive
    The more you know, The better you know, How little you know

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