Re: What's best? Left or right hand threads on cam

Posted by NC Wayne on December 05, 2004 at 19:56:27 from (64.12.117.7):

In Reply to: What's best? Left or right hand threads on camshaf posted by hairy on December 05, 2004 at 09:43:22:

The purpose of putting either a left hand or a right hand nut on a shaft is prevent it from loosening itself during operation. If your shaft is turning CW you'd make the threads turn CCW or left hand to tighten,and just the reverse for a CCW rotating shaft. As long as the shaft is turning into the threads they have a tendency to tighten during operation as opposed to trying to loosen. That's the reason you find many mowers with their blades held on with left handed bolts, to keep the blades tight.....and to mess with the man that wants to take them off the "right" way.... I don't know all the particulars about the design in your application, but this is just a good rule of thumb.

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