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Recent content by zepp

  1. zepp

    Design Possibility, can or CANT be doneà

    the kind of drive system you are asking about is already in use around the globe, used in open cast mines, here in Borneo for instance there are many trucks, and other ore handling vehicles, manufactured by Volvo/Michigan/Euclid (VME), Leibheirr, and Hitachi. Your biggest problem is down to...
  2. zepp

    Running Cylinders in Series for Synchronization

    please let me start of by begging forgiveness on my ignorance here, but, if we are talking about synchronized lifting, with hydraulic cylinders, why would you connect them up in series? Ive found the best way to carry out a synchronized lift, was to actualy have one pump per cylinder. this is...
  3. zepp

    "Hydraulically actuated mechanical tensioners"

    unclesyd, those are not the ones I am fuming about, I know of the biach product, never used it so cant comment on it, the ones I am talking about are the Hytorc answer to normal hydraulic bolt tensioning, I dont have a weblink for you to look at, basically ive trashed all the information i ever...
  4. zepp

    "Hydraulically actuated mechanical tensioners"

    So true, and usualy I would, but this is being marketed by a reputable manufacturer, we were promissed all the answers to our questions by the time the stuff arrived, I guess I was over anctious to try out some new technology, uh, guess i wont be that rash again. The thing that worries me most...
  5. zepp

    "Hydraulically actuated mechanical tensioners"

    I dont know if any of you guys have come accross this new "revolution in bolting" as it is being marketed, Basically after one application, I can confidently state that we will never be taken in by such a sales pitch again. basicaly the claims made that (1) 50% tool coverage was gone: this...
  6. zepp

    bolting torque

    HGTX The first iron bridge has both, rivets and nut and bolt, but I agree with your last statement in as much that the bolt council have advised that turn of the nut after torquing has been done is acceptable, and as such, on site there should be a bolt load meter to test a certain number of...
  7. zepp

    bolting torque

    HGTX thanks for highlighting the quote, but used a little out of context, or maybe my error was in using wrong context, I was stressing on the only sure fire way of knowing the stretch in a bolt, even then it is open to some ellement of mistrust, its always difficult to determine if you have...
  8. zepp

    bolting torque

    can i add my 2 penneth too?? It concernes me very much when i see people trying to find a link between torque and tension, the two methods do not go together at all, no matter what certain tool manufacturers try to say, tension is directly stretching the bolt, and therefore creates the correct...
  9. zepp

    Fastener Tightening Strategies Help Requested

    thanks for the pointer. I havent seen angles quoted before, I have always had to deal with specific torque values where the automotive industry is concerned. I will bear it in mind in future.
  10. zepp

    Torque control of impact wrench

    Nick 55 Having gone through this post (late I know, but Im new here)first of all I would like to say, your final choice is slightly better than your original, yes the tool that you have selected is expensive, but is it acurate? I have faced this argument many times in the field, basicaly the...
  11. zepp

    Torque Specification with lock washer

    An interesting thread altogether, and some good advice given, I know this comes very late in the day, but I would like to know what method is being used to torque the bolts, and are the bolts used, being tested on a bolt load meter? I would say that if I have read the upper posts correctly, you...
  12. zepp

    Fastener Tightening Strategies Help Requested

    With regard to the original question, If you are going to advocate angles after torque, one thing so far has not been mensioned, and that is using a bolt load stress meter. Usualy in the construction industry, a batch of bolts from any manufacturer would have so many bolts tested, the test bolts...

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