Posted by Tom Upton on April 11, 2009 at 18:33:54 from (24.137.37.126):
In Reply to: Bent Hyd cylinder posted by old on April 11, 2009 at 17:00:01:
Be very carefull when strightening cyl rods. Especialy if they are bent more than 20 degrees.I have personaly seen one break and fly endways out of a 60 ton press. It was a 2 1/2 inch rod about 2 feet long and it flew about 15 feet before it landed! Must have been made from some fairly high carbon steel. Our press has lexan guards front and back but this piece managed to go endways out the side of the press. This being said I would say smaller dia. ag type rods are less likely to break. We have a millwright at work that does the "rougth" staightening in the press, then puts in v blocks on a t slotted table and uses clamps and a dial indicator to get rod usualy within a couple thou.We actualy straighten new turned and ground shafting matl. for specialty jobs as it is usualy not that straight.
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