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Rolling Mill Spline Problem
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PROBLEM
This Pennsylvania steel rolling operation had a midshaft spline seize. The rest of the drive was in good shape and less than a year old. There hadn't been any serious "crashes", so they were puzzled as to what happened.
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SOLUTION
We reviewed the system and their operating procedures. We found that in order to facilitate quicker roll changes, the roll end companion flange bores had been opened up.
Our experience has shown that a "loose fit" at any of the connecting points will result in excessive mid-shaft spline loading.
Our customer replaced the shaft and tightened their roll end fit. Let us know if you would like us to review your drive system and operating procedures.
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