The purpose of sleeving hydraulic cylinders is not only to return the
inner bore to the correct diameter, after much wear, but to use a
material that will not corrode as the original casting did. The correct
grade of stainless steel, or the brass sleeving, does just that.
Of course, one may want to sleeve a cylinder that would clean up just
fine with a honing, to prevent having to do it again when it corrodes.
There is some bore wear due to friction, as well as corrosion, on the
cylinder wall, but the corrosion usually kills you first. I would think
that a sleeve material that resists corrosion for a long time should
also have a high resistance to bore wear to due all that one would like.
Of course, the rubber itself deteriorates, at a slower pace, so
rebuilding is not entirely eliminated, but made a lot simpler if there
is no corrosion.
http://www.TigersUnited.com lists a number of hydraulic rebuilders who
sleeve in brass and some in brass or stainless. These are in the Links
section of the side bar menu.
--
Steve Laifman < Find out what is most >
B9472289 < important in your life >
< and don't let it get away!>
<SLaifman@SoCal.RR.com>
<http://www.TigersUnited.com/gallery/SteveLaifman.asp>
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