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  1. fe16260

    shink fit problem

    We are honing the bore out and they are holding the ID true to 0.001" of total runout. Maybe that's the issue were having is maintaining that interference over the length of the sleeve. Again, thank you very much Desertfox - look forward to seeing your posted calculations when you have time...
  2. fe16260

    shink fit problem

    Hi Desertfox, The length the interference is maintained (length of sleeve) is 36.846 inches. Yes that would be great to post your calculations when/if you get the chance. Thanks again - sorry for the delay on my part but i have been swamped at work :). Best regards, Andy
  3. fe16260

    shink fit problem

    THANK YOU so much sir for checking this for me. I will check the length of the engagement on the print when i get back to work tomorrow. As to establishing my friction coefficient (it was just assumed for the calculations), i have specified to the fabricator to have a very rough finish on...
  4. fe16260

    shink fit problem

    Desertfox, Thanks for replying - here's the information you requested: Transmitted Torque = 900,357 in*lbs Internal Diameter interface(shaft-sleeve) - 16.9 inches External Diameter of sleeve - 26 inches Radial pressure at interface to transmit torque (assuming a 0.003" radial interference...
  5. fe16260

    shink fit problem

    Knowns: D2 tool steel Sleeve (Rc 62) 4140 Shaft (Rc 28) This is a fairly large part and the interference fit is calculated/specified to be 0.008" Problem Statement: Have had (2) issues: (1) the sleeve cracked (like an eggshell). I assume it's due to high stresses since the D2 sleeve is heat...
  6. fe16260

    Ducting - if have multiple ducts, what will be the cfm in each duct

    Boo1 WOuld i need a plenum prior to branching off 6 lines? Also, would i need a plenum with returning the 6 lines back to the unit?
  7. fe16260

    Ducting - if have multiple ducts, what will be the cfm in each duct

    Boo1 and emalsyd, THANK you so very much! This is what this site is all about - to help other search for solutions so i thank you for giving me a direction on how to balance the system. Thanks again Andy
  8. fe16260

    Ducting - if have multiple ducts, what will be the cfm in each duct

    Thanks everyone... Waramanga... The Aprilaire 1770A comes with an 8" inlet and 8" outlet for 8" ducts. The issue i am having is one area of my crawlspace is not dehumidifying b/c there are obstructions in the way (pillars, tight opening, etc) so i was thinking about ducting it to specific...
  9. fe16260

    Ducting - if have multiple ducts, what will be the cfm in each duct

    Problem Statement: I have an whole-house dehumidifier (Aprilaire 1770A) that can be used to duct (8" diameter inlet/outlet) to specific locations in a dedicated area. In other words, i am using this dehumidifier for my crawlspace (1,850 sqft) and i need to duct (both for the supply and return)...
  10. fe16260

    Cryogenically treating carbide

    Does anyone have any experience to cryogenically treating carbide? What grades of carbide are more suitable for cryogenics? I am looking at optimizing our tooling wear within our progressive stamping department. Thanks in advance for your help on this, Andy

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