Re: Worn press fit

Posted by Bob - MI on November 16, 2004 at 08:09:48 from (66.14.205.20):

In Reply to: Worn press fit posted by Hendrik on November 16, 2004 at 05:40:31:

The correct fix depends on what is worn. Often there is one part that is harder than the other and the softer one is the one that gets repaired. 0.010" is quite a bit for a rotating part to be off and i"m guessing that value is on the diameter of the part (ID to OD). If it"s the gear that"s large I would consider slightly reaming it out to straighten the bore out and allow it the best contact on the shaft. You may need to see a machine shop for this. When opened up, take the difference in ID/OD and divide that by 2. This will be the size shim or sleeve that you will need. Wrap it around the shaft and give a gap for the key. Locktite is a good idea to keep it from wobbling off again.

If the shaft is worn it may be a different story trying to get it built back up but the goal is the same, get it straight again and achieve good contact. You may need to get a new shaft or your machine shop may be able to flame spray stock back on and re-machine the end. Good luck

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