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  • Users: molds
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  1. molds

    Compression Spring formulas

    Thanks desertfox for your reply.
  2. molds

    Compression Spring formulas

    I am looking for a formula for calculating the spring rate per inch, when stacking three compression springs. (Danly #9-1006-11) I believe the spring has a rate/inch of 120 lbs. I want to stack three of these with guides between them which slide on a core rod. The stack will be compressed .90 of...
  3. molds

    What is the best spring material?

    I can modify the pocket to go with a spring as long as 4.5 inches if that would help.
  4. molds

    What is the best spring material?

    I would like the spring to last for over 1 millon cycles if possible. I can use a Dadco nitrogen gas spring with that stroke which they say is good for 1 millon strokes minimum. I thought that a standard spring should be able to be set up to out live the nitrogen spring. there are 3 springs per...
  5. molds

    What is the best spring material?

    I can increase the depth of the pocket to allow a longer spring. I feel that the increase in length will reduce the stress and help reduce the side load against the pocket. how should the spring be supported? if I put a pin in the center, it will still rub on the pin, correct?
  6. molds

    What is the best spring material?

    israelkk, you are right, the sprink rate is 26lb/in for stainless steel. I incorrectly typed in the music wire rate. the pocket in the aluminum can only be 1.875 deep because the stripper bar that the other end is guided by has a pocket .20 of an inch deep. the stripper bar would crash into the...
  7. molds

    What is the best spring material?

    TVP, the spring is compressed to a height of 2.05 inches. 3-.20 preload -.75 = 2.05 compressed height. Thanks
  8. molds

    What is the best spring material?

    The spring number is LC072G13S. Thanks
  9. molds

    What is the best spring material?

    The springs im using now are a Lee stock spring made from passivated 302 stainless ASTM a313. thanks for your help.
  10. molds

    What is the best spring material?

    I have a situation where compression springs are failing at an accelerated rate. the situation is a 3.00 inch long, 1/2 diameter spring. it has a rate of 31.17 LB/IN. preloaded .200 of and inch, with a working stroke of .75 inches. the solid height of the spring is 1.560 inches. the spring...

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