Posted by: prakash2004 ® mahajanpv 08/06/2004, 07:22:02 Author Profile Mail author Edit

Dear Friends, For the CNC machines, when the pressure reducing valve fitted inline with the pressure relief valve then how much pressure difference required to function it properly. With warm regards, Prakash..............

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Re: Machine Tool Hydraulics
Re: Machine Tool Hydraulics -- prakash2004	Post Reply	Top of thread	Forum

Posted by: maytag ® 08/10/2004, 11:43:13 Author Profile Mail author Edit

In most industrial applications I seen the relief valve will be set 10-15 bar higher than your pressure reducing valve(secondary pressure).  Maytag

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CNC hydraulics
Re: Machine Tool Hydraulics -- prakash2004	Post Reply	Top of thread	Forum

Posted by: randykimball ® 08/06/2004, 21:10:33 Author Profile Mail author Edit

This information needs to come from your manufactur or the book that came with the machine tool. However if the pressure is not within 90% of the orginial (as delivered) amount you likely have a worn pump, leaking seals in the relief valve, or leaking/bypassing clamps/chuck/motors. Your chuck and clamping devices will begin to misfunction at that point. The pump and relief valve are considered perishable items to replace every few years. -randy- The worst suggestion of you 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 Fri, Aug 06, 2004, 21:11:25

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