Eng-Tips is the largest forum for Engineering Professionals on the Internet.

Members share and learn making Eng-Tips Forums the best source of engineering information on the Internet!

Register Log in
  • Congratulations JStephen on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. Daparojo252

    Deflection Of A Mass Due To Centrifugal Force

    Yes, it is perfectly balanced during rotation. Thread locking is not required due to the high tensile loads the bolts are subjected. The Bolts are hydraulically tensioned.
  2. Daparojo252

    Deflection Of A Mass Due To Centrifugal Force

    Thanks you for the input, it's appreciated. The application is made up of two flanges, with Nut on each end of the Bolt. Rotation is around 3900 rpm and can be for a Bolt from M36 to M90 (so not so small, but large masses & centrifugal loads). I always try to reduce the Nut mass to limit...
  3. Daparojo252

    Deflection Of A Mass Due To Centrifugal Force

    I am trying calculate the theoretical displacement of a mass that is fixed at one end, the other rigid due to a centrifugal force acting on a mass. Where the other end is rigid, it subject to a tightening load against the application face, hence the centrifugal force, F has to overcome the force...
  4. Daparojo252

    Pushing Up A Taper

    0.15 friction is used for static friction on steel/steel, 0.18 if lubricated - this has been taken as standard. The application is dry hence 0.15 We wouldn't yield the sleeve material.
  5. Daparojo252

    Pushing Up A Taper

    I am looking for some help. I have a internal tapered sleeve that needs to be pushed up a solid tapered shaft (similar to old propellor methods). I need to push it up by 1mm. I am presuming that the thickness of the sleeve in the middle is 8mm, and the length is 115mm. The angle is 5.9 degrees...
  6. Daparojo252

    Preload and Losses

    Dear All, I am after guidance, and would like someone to check to see of I am on the right lines. I have need a fastener that needs a preload value 70% of its yield. Material has a yield of 600 MPa, therefore 70% is 420 MPa. The Cross-Sectional Area of the fastener is 1000mm2 (smallest...
  7. Daparojo252

    Tab Washers

    I had a look at Nordlok, but the size they do is up to M39 :(
  8. Daparojo252

    Tab Washers

    I am need of preventing a M42/M45./M48 Nut from coming loose during operation whilst underwater on a pumping application. It will be exposed to seawater and vibration, so has to be resitive to saltwater corrosion. 316,304 and 303 Stainless Steels can be problematic under those conditions due to...
  9. Daparojo252

    Bolt Extension Help

    Is there anything else that could improve accuracy?
  10. Daparojo252

    Bolt Extension Help

    As accurate as possible Desertfox. I am trying to relate some pre calculated figures against actual tensioned figures, and trying to get my head round how the theoretical figures are calculated. What is apparent is that the calculated figure is marginally lower than the actual tensioned figure...
  11. Daparojo252

    Bolt Extension Help

    Thanks desert fox. The cross sectional area would be the thread dia? Undercut of thread? Or the bolt area in the hole I.e 60mm? Thanks
  12. Daparojo252

    Bolt Extension Help

    John, it's not a classroom assignment. I am trying to put a theoretical equation to a mechanical test. I tried to implement the equation of Dl= FL -- EA But it seems a little way off, but not much. F = 750 kN L = I have turned the whole bolt length, or the clamping length between the...
  13. Daparojo252

    Bolt Extension Help

    Hi people. I have a problem in that I need to look at. I have a bolt that is threaded both ends with nuts on the end. The bolt goes through two coupling halves. The middle portion is bigger in diameter of the thread, a slight clearance in the hole. The bolt is hydraulically tensioned, and then...

Part and Inventory Search

Back
Top