Protective Layer For Long Stroke (1.6 m) Hydraulic Cylinder Working In Water

Thanks but there is no space /provision out there to have air purge as well as source of air.

addition scraper seal and gland nut modification can be explored which is also suggested by OEM but working out to be expensive

Thanks once again.

<...expensive...> Compare it directly to the cost of not doing the modification. Which of these two is cheaper?

You need a special seal kit...the piston rod must be smooth, if it's been damaged this will cause the seals to fail....inspect the piston rods if they are damaged you must replace them and install the piston rod protectors and seals all at once...

http://sealsaver.com/

http://www.parker.com/literature/Industrial%20Cylinder/cylinder/cat/english/1111-M1.pdf

THank you..

We have tried with sealsaver but waiting for their response. From website could see they have protection for the environment exposed to dust and contaminants.

We have to find indian product support for the PARKER to discuss this. Do they give solutions to end users or they respond only to OEMs . Any idea ,advice please.

thanks for the recommendations

Found this...they should be able to offer some help and advice...

http://www.parker.com/portal/site/PARKER/menuitem.0f2bc7a05c3b8f338c23b35b8320d1ca/?vgnextoid=43ba3d340724b210VgnVCM10000032a71dacRCRD&vgnextfmt=EN

Thank you very much

May also want to look at some kind of bellows over the rod, just to reduce the contact with anything that can cause damage to the rod surface.

If your existing cylinder rods have been chrome-plated steel, you might consider switching to chrome-plated stainless steel. You can compare the costs with Wrench twirler's solution, which is a GA.

You ask for some means to protect the cylinder rod but give nothing on the source of the damage. As far as the water they make coalescing filters for oil. there are other types of oil separators. You could also change out the control valve so that the pressure is dead headed. This will cause the oil to get hotter and evaporate the water. Flow valves could be installed this would restrict the flow of oil increasing the pressures in the cylinder during operation. The pressure would be felt at the seal putting more sealing force against the rod.

But these are band aids if the the cause of the damage to the rod is not addressed.

Thanks for your feedback

Water should not enter in to the system at any cost and thatswhy.Oil separator option may not work here. We need to strengthen the scrapper portion of the cylinder gland

Where in a concrete pump is there a hydraulic actuator that is immersed in water?

You also mentioned a lack of compressed air......doesn't your pump truck have brakes or a horn?

Post a photo if possible.

we have mostly stationary type which needs to be towed by a tractor. Enclosed pic of actual application.

Enclosed t

So it operates immersed in concrete and not water, but the ingress of water from the concrete into your hydraulics is causing bother?

Just attaching one extract from the manual for better understanding

Unable to attach ppt and mp4 files due to the restriction on file types.My sincere apologies.

THe Long hydraulic cylinder drives the piston of the concrete pumping chamber.Water washing of the hydraulic piston rod and cooling of the concrete pumping piston is done in the intermediate water box. The cement slurry leaks past the concrete piston during regular operation .

That is a very abrasive environment that hydraulic rod works in. The photos show them as being pretty farged.

You have said that you are space restricted , but......., if the hydraulic actuator was outboard of that piston which pushes the concrete pump piston, ie have the shaft going through the water lube and cool chamber just be a conrod with a leaky gland and the hydraulic actuator can then be outside of this and protected with bellows if desired. This totally segregates the ghastly environment from the hydraulic ram's face.

Could you fit that in? Perhaps make it a component that is pinned into place for service and swung around and stowed for transit.

This may not be possible in this equipment. Thanks for your feedback.