Chinese Bridgeport BT 30 spindles

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Chinese Bridgeport BT 30 spindles

Home Forums Manual machine tools Chinese Bridgeport BT 30 spindles

Viewing 13 posts - 1 through 13 (of 13 total)
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  • #481413
    Mark Williams 14
    Participant
      @markwilliams14

      Has anyone bought a Chinese eBay BT30 spindle? I am looking at getting one to retrofit in my mill drill to get rid of the mt3 spindle with a few mods. Was wondering what they are like and do they have the recess machined into them to take a pull stud claw. All the suppliers know nothing about them when asked!!

      thanks

      Mark

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      #13946
      Mark Williams 14
      Participant
        @markwilliams14
        #481417
        Tony Pratt 1
        Participant
          @tonypratt1

          No but the answers will be interesting, do the ads specify an exact machine, can you attach the link?

          Tony

          #481423
          Tony Pratt 1
          Participant
            @tonypratt1

            Just an afterthought, the quality is not going to be guaranteed & that is what you want in an item such as a milling spindle.

            Tony

            #481513
            old mart
            Participant
              @oldmart

              _igp2434.jpg_igp2428.jpgThe ebay spindles seem to be mostly ISO 30 which have the 12mm thread, but some have the drive cutouts and some do not. I know there are several variations in every size of this type of milling spindle tooling, its difficult to know whether one will just fit, or need modifications. The pull studs just screw in if a drawbar is not used.

              I went the R8 route from MT2, it was the easier option.

              Edited By old mart on 22/06/2020 17:14:36

              Edited By old mart on 22/06/2020 17:17:02

              #481593
              Mark Williams 14
              Participant
                @markwilliams14

                I haven't seen any with the ISO 30 taper, only NT30, ( sorry I put the wrong style in before) I must be looking in the wrong spot! Ones like this

                Link Removed see CoC

                 

                cheers

                Mark

                Edited By JasonB on 23/06/2020 07:39:46

                #481614
                Paul Kemp
                Participant
                  @paulkemp46892

                  Oops, does this contravene the new code of conduct?

                  Paul.

                  #481627
                  Mark Williams 14
                  Participant
                    @markwilliams14

                    Sorry, I am not sure what you mean? If I have done something incorrect please let me know

                    Mark

                    #481639
                    not done it yet
                    Participant
                      @notdoneityet

                      Mark,

                      I doubt yours will contravene the new code. It is apparently a ‘light- fingered’ approach regarding moderation and will apply mainly to the ‘phoney’ reviews which pervade certain youtube channels where ‘influencers’ may otherwise gain free advertising on the forum if allowed to be posted within threads.

                      There may be several suppliers who sponsor the forum (by buying advertising space) who are faced with aggressive advertising by other suppliers at no cost (along with ‘reviews’ which are very one-sided in favour of that supplier) other than rewarding the ‘influencers’ with free gifts and possibly other un-taxed remuneration.

                      #481643
                      JasonB
                      Moderator
                        @jasonb

                        See Neil's recent post here

                        It was actually this thread that prompted me to chase up getting something put on the forum as I could see just such links being posted having been actively moderating a couple of others over the last couple of days.

                        #481644
                        Paul Kemp
                        Participant
                          @paulkemp46892

                          Mark,

                          I don't think you have done anything wrong, I was just making a point that the supplier in your link may come under several criteria listed in the new policy (not a UK seller, no confirmation import duties are properly paid etc) Pay no heed from a personal perspective.

                          Paul.

                          #481693
                          Bazyle
                          Participant
                            @bazyle

                            I am suprised that a spindle big enough for a 30 taper fits a milldrill quill. Even R8 could be big for bearings designed for MT3 but you mention 'mods'. Details will be interesting if you do it.

                            #481788
                            Mark Williams 14
                            Participant
                              @markwilliams14

                              My Mill drill head uses the same bearings set as a Bridgeport, going on the rough dimensions provided by the sellers the spindle is the same length between bearings and very similar else where, the splines may be different dia depending on how the sellers have measured them.

                              Mark

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