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Recent content by Machina

  1. Machina

    Seeking a reference or guide for engineering with ceramic materials

    Thanks for those suggestions. I've downloaded some information from both Coorstek and Kyocera. I've been looking at Brevier Technical ceramics website to try to get some understanding: http://www.keramverband.de/brevier_engl/brevier.htm (thought I'd put that link here in case anyone else has...
  2. Machina

    Seeking a reference or guide for engineering with ceramic materials

    Hi, Can anyone recommend a book or other reference that would serve as a guide for using engineering ceramics in mechanical engineering? When I search for ceramic engineering books I seem to find books about how to make them rather than how to use them. I've often found myself working on...
  3. Machina

    Understanding SAE J1723 supercharger testing - transitions?

    Thanks dgallup, that agrees with what my colleague and I were thinking. However our boss is the one who thinks otherwise so we'll have to convince him. Without meaning to be rude is there any way we can back up the argument? Any diagrams from SAE, explanations in reference books, or similar? I...
  4. Machina

    Understanding SAE J1723 supercharger testing - transitions?

    Hi all, Where I'm currently working is refitting their supercharger facility and want to apply SAE J1723. Sounds like a simple request to apply the right standard but we're having some discussions about interpreting it. In particular the definition of the transitions. The standard defines the...
  5. Machina

    Measuring fit of a taper using blue

    It seems Dykem make a few products, and are better known for marking out blue but the one I'm using (Hi-Spot Blue) is, as JJPellin describes, non-hardening. It is quite thick and difficult to get a thin layer on, so I'm wondering if I'm building my own high spots with the blue. It does have a...
  6. Machina

    Measuring fit of a taper using blue

    The blue I'm using is a brand new tube, so I'm happy that that's OK but it is thick and I think I'll try thinning it down a bit. The weight of this one is not as bad as the situation you had. The hub is about 80lbs. We could lift it manually into position but we've been using a sling to try and...
  7. Machina

    Measuring fit of a taper using blue

    My current thinking is to make up some tooling (probably just bits of plate and studding) to help get the hub off the shaft and then try the blue check again using a soft faced mallet to tap it onto the shaft. Other ways I could try and push it on include tightening the locknut a little or put...
  8. Machina

    Bearing Design Assistance

    Bearings Plus, Inc. in Houston, TX? http://www.bearingsplus.com/
  9. Machina

    Measuring fit of a taper using blue

    Hello all, I'm working on a job where I am assembling a hub to a shaft. This is an interference fit onto a taper (will be using hydraulics) but I have to check that there's sufficient contact area between the items before I drive it on (the spec. calls for 85%). So I'm trying to measure this...
  10. Machina

    Oil Blacking / Oil Blackening

    I'd had a look at bluing and was wondering if that was what people were thinking of. And it sounds like the suppliers who understand the term 'oil black' are interpreting it as black oxide and then oiled. The description being : clean & de-grease parts into hot salt solution (approx...
  11. Machina

    Oil Blacking / Oil Blackening

    In this particular case the machine will be in an environment that'll see quite wide temperature changes. It's in an unheated building in the UK and, with winter approaching, condensation is an issue. Also it's a 'demonstrator' so has to look good. Other than that I'd be happy to keep it clean...
  12. Machina

    Oil Blacking / Oil Blackening

    I've tried searching for this but "oil" and "black" are common terms with nothing coming up for what I'm after. if there's an existing thread, or I'm in the wrong forum, please let me know. In the office I'm working in there has been a lot of discussion on what can be done to prevent corrosion...
  13. Machina

    Bearing locknut (lock nut) axial access only

    Ed, That looks more like what I was thinking about. However it looks like we're going with the Spieth one for the time being; we'd ordered one of those and have made some design decisions based around them. I'll keep a note of yours for future reference, thanks.
  14. Machina

    Bearing locknut (lock nut) axial access only

    Thanks unclesyd, Nord-lock came back to me say they didn't have anything off the shelf but the Spieth range looks promising. We've ordered one and are waiting for it to turn up to try it but it' looks like it should do the job. I got a price back for the Hiwin option and its was high, as...
  15. Machina

    Bearing locknut (lock nut) axial access only

    Hello all, I'm wondering if someone can help me with a problem. If I'm posting in the wrong forum please let me know and I'll report or move as required. I'm designing a machine (one off) which requires a bearing to be held securely in place on a shaft. The bearing is at the bottom of a hollow...

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