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  1. Phamjt

    Heat Shrink Fit

    Maybe my calculations are wrong in calculating the temperature? I used d = aL(Dt) d = 0.045 a = 6.1x10^-6in/in °F L = 1.125" Dt = Temperature difference (°F or °C) The assembly will go into a steering cylinder so I think that's axial forces?
  2. Phamjt

    Heat Shrink Fit

    Yeah it was a very tight fit so I would have to keep doing some calculations to see what would work. Assuming all that works out though my main concern would be the hardness of the material. If the calculations are right the hub would be around 700F. The only way to safely assemble it would...
  3. Phamjt

    Heat Shrink Fit

    I may have done this wrong but when I was using the FN tables in the machinery handbook for shrink fits it showed the Largest Tolerance for the hub would be 0.0012" while the smallest tolerance for the shaft would be 0.0025". That would give me a tightest fit on top of some clearance to get a...
  4. Phamjt

    Heat Shrink Fit

    I am currently working on analyzing the capability of using shrink fit (Most likely with induction shrink fitting) to heat up a steel hub (1045 steel) so that it can slide onto a shaft. Using the tolerances from the tables obtained in the machinery handbook for a FN5 fit I have an estimated...
  5. Phamjt

    Heat Shrink Analysis

    Hello, I really appreciate the guidance on what areas I should focus on before determining whether or not this method is capable or not. Unfortunately I do talk to a few of the more experienced engineers at my workplace however they don't have much expertise in heat shrinking. Majority of what...
  6. Phamjt

    Heat Shrink Analysis

    I was assigned a task of researching the capability of heat shrinking two metal parts (Rod and Sleeve/Hub) together instead of the current process of welding them. Unfortunately I am an intern and I have very limited knowledge on tolerancing and none on heat shrinking. From what I was able to...
  7. Phamjt

    Heat Shrink Tolerancing

    Thank you JNieman, I may have interpreted what my supervisor said wrong as I was under the impression he wanted me to somehow use a sliding fit tolerance for the problem while also considering heat shrink tolerances. There is a few additional information I need to look at but for now I can...
  8. Phamjt

    Heat Shrink Tolerancing

    I have been able to calculate those values from the table however my supervisor wants me to look into multiple factors. His thought process was it would be a FN5 fit but when you slide the hub onto the rod there would need to be an additional sliding fit tolerance if that makes sense. For now...
  9. Phamjt

    Heat Shrink Tolerancing

    I'm currently working as a mechanical engineering intern and I was assigned a research project involving heat shrinking two metal components as a possible alternative to welding. The main resource I am using is the machinery handbook (26ed) which does give me formula's for calculating allowance...

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