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17345Re: [multimachine] quality of threaded rod

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  • Bruce Bellows
    Jun 24, 2013
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      Anti backlash nuts can be used to eliminate backlash even on low precision acme thread if that is all that is required.

      A precision class acme thread will have a tighter tolerance between the thread pitches.
      For example  10tpi thread 
      2G class has a tolerance of .0095
      3G class has a tolerance of .0044
      2G class has a tolerance of .0032

      Bruce

      On 6/23/2013 1:05 AM, Pierre Coueffin wrote:  

      If you have a disk indicator with a long stroke, it might be interesting to measure how consistent the travel is per revolution of the screw. Also, measuring the play along the axis could be useful.

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