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Re: Line Scoring on Piston Seal of Hydraulic Cylinder
Re: Line Scoring on Piston Seal of Hydraulic Cylinder -- Kugan	Post Reply	Top of thread	Forum

Posted by: randykimball ® 09/26/2006, 23:17:38 Author Profile eMail author Edit

If these are inside the cylinder, then the most likely reason for seal damage is foreign matter in the hydraulic fluid and system. If it is a new and fresh system you can bet that some foreign matter failed to be removed before or was deposited during assembly. The other possibility is poor installation methods. The worst suggestion of your lifetime may be the catalyst to the grandest idea of the century, never let suggestions go unsaid nor fail to listen to them. Modified by randykimball at Tue, Sep 26, 2006, 23:18:39

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Re: Re: Line Scoring on Piston Seal of Hydraulic Cylinder
Re: Re: Line Scoring on Piston Seal of Hydraulic Cylinder -- randykimball	Post Reply	Top of thread	Forum

Posted by: kugan ® 10/03/2006, 13:46:40 Author Profile eMail author Edit

Thank you Mr. RandyKimball. Well said. Hydraulic is like Surgical system ie. contamination sensitive one. What we are talking about is globally renowned cylinder manufacturer. we have asked for cylinder replacement. Let us keep our finger crossed for the new Hydralic cylinders. by s.a.kugan Modified by kugan at Tue, Oct 03, 2006, 13:49:31

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Re: Re: Line Scoring on Piston Seal of Hydraulic Cylinder
Re: Re: Line Scoring on Piston Seal of Hydraulic Cylinder -- randykimball	Post Reply	Top of thread	Forum

Posted by: Kugan ® 09/30/2006, 05:06:32 Author Profile eMail author Edit

Thank you Mr. RandyKimball for your answer. In your reply, you have indicated that the possibility of improper installation. Can you explain what kind of installation? Valves or Cylinder installation? If Cylinder installation, can you explain me how it makes line scoring. Kugan Modified by Kugan at Sat, Sep 30, 2006, 05:07:24

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Re: Re: Re: Line Scoring on Piston Seal of Hydraulic Cylinder
Re: Re: Re: Line Scoring on Piston Seal of Hydraulic Cylinder -- Kugan	Post Reply	Top of thread	Forum

Posted by: randykimball ® 10/02/2006, 23:26:54 Author Profile eMail author Edit

I would suspect the possibility of damage to the seals during installation. This often happens because of: handling on a dirty or rough surface, from using improper tools, forcing seals to fit into the cylinder without proper tapered rings, over stretching during placement on the piston, cleaning parts or seals in fluids that cause them damage, ..the most common problem I've seen is forcing seals without proper installation tools and jigs. Assembling hydraulic equipment should be treated as a surgical proceedure with similarly clean areas. Sometimes it is wise to slip seals over a tapered male plug sized to match the diameter of the piston on one end, and smaller than the ID of the seal on the other, using properly matched lubricant. After the seals are on the piston often it is wise to push them through a matched female taper ring with the small end the same size as the ID of the cylinder. For a properly matched lubricant ask your equipment manufacturer, usually you MUST use a lubricant during assembly. During assembly I prefer to pretend I am doing brain surgery. I let nothing sharp near my seals and treat them as if the life of the hydraulic system depends on proper installation. .. it does! I hope this helps. The worst suggestion of your lifetime may be the catalyst to the grandest idea of the century, never let suggestions go unsaid nor fail to listen to them. Modified by randykimball at Mon, Oct 02, 2006, 23:42:12

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