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  1. Porknar

    Checking Concentricity and TIR

    No real standard is being applied. We do not have a problem checking the TIR, its when they throw in the concentricity. It has been a long time since I last worked with it. Concentricity is and axial measurment, so a cylinder would have to be measured then compared to to the other cylinders to...
  2. Porknar

    Checking Concentricity and TIR

    A little help here. We have an old print for a shaft that reads "Diameters to be concentric within .001 TIR" Now these diameters are differnet sizes ranging from 11" to 19.5" over a shaft that is 66.5" long. Can anyone offer a defintion and an inspection method. We are having a dispute on how...
  3. Porknar

    Help with gear size and ratio

    Thanks guys, The Handbook of Practical Gear Design is on its way. D
  4. Porknar

    Help with gear size and ratio

    Not really, lets say I use a 6 tooth spur gear coming off the motor, the next gear need to be some many teeth but, I need to keep the second gear small enough lets say around 4 to 5 inches in diameter. I understand the cantilever beam and applying to a a gear tooth, but it does not realte to...
  5. Porknar

    Help with gear size and ratio

    It has been a long time. I am not worried about the load calculations on the shafts and bearings yet. I am worried about the size of the gears. I just can't remember how to how determine the size of the gears. I came here for help and some advice. Can some one help me?
  6. Porknar

    Help with gear size and ratio

    I have looked at these gear boxes, and that is not what I am looking for. I would like to figure out the gear sizes, so I can make them myself. I know there are easier solutions, but I need a winter project. Thanks for the links lots of good information.
  7. Porknar

    Help with gear size and ratio

    I know that, but I have access to some machine tools and thought it might be a fun project. Just looking for some advice, help and or direction.
  8. Porknar

    Help with gear size and ratio

    I have a home project that I need some help with. Is there away to figure out the gear size for something like this? gear input: 2.29:1; gearbox ratio: 115:1Pulls 32 FPM and 1800 lbs. single load; I am not sure home figure out the size and number of gears. I would like to try to run this from...

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