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  • Users: kritter
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  1. kritter

    Nitrile Failing in Hydraulic Oil

    I am using a die cut nitrile bumper .25" thick inside of a shock absorber for an internal extension cushion. Some have failed some have not. When the part does fail its catastrophic destroying all the internals of the shock absorber due to contamination which plugs the ports, bends/breaks shims...
  2. kritter

    Piston Rod Material for Extreme Abuse

    If money was no option what would be the shaft of all shafts to resist sand blasting, rock dings, and general abuse suffered in an offroad application? If money was important in the same application what would you choose and why? Currently for street applications the material is: 1045/1050...
  3. kritter

    Rubber Snubber

    I need to have made a rubber bumper for a shock absorber in a race application and I have very limited knowledge of what type of rubber I need to call out. The only loads this bumper will see is compressive loads. It is going to be .375 tall, 2.875 OD with a 1.25 hole in the center. I would like...
  4. kritter

    12V Hydrostatic Pump

    I have been given the task to source a 12V hydraulic pump that will generate 5GPM flow and be able to withstand the ruggedness of off road racing. I dont deal with pumps so I figured I would come here and ask on some recomendations for quality pump brands as well as a place I might go to find...
  5. kritter

    4-12 Acme thread issues

    Ive got a 4-12 acme threaded steel can. A collar and a lock nut are machined out of aluminum and screw on to the steel can. The steel is electroless nickel plated .0008" thickness. The aluminum is andoized and is brought back to net. We discussed with the machine shop to decrease the thread...
  6. kritter

    1006 vs 1010 vs 1016 HRPO

    What would you choose and why for a .25 inch HRPO plate with a 2 inch wide bottow die bending 90 degrees + for fabricated structural components? They have to be nice to cut on the laser cutter as well as nice to bend without cracks forming? If I order material straight from the mill can...
  7. kritter

    Cavitation/Foaming Vs Viscosity

    Can anyone enlighten me with a text or website or experience that will give me a correlation between viscosity of an oil and cavitation in a hydraulic system? This is for a monotube shock absorber application and I am trying to determine the best viscosity oil to use of the 5 most widely used...
  8. kritter

    Oil and elements

    What benefits do these additives add to a hydraulic oil? phosphourus zinc calcium silicon I assume it helps seals and o-rings but I dont know that for a fact. Thanks, Kris
  9. kritter

    Oil additives

    What benefits do these additives add to a hydraulic oil? phosphourus zinc calcium silicon I assume it helps seals and o-rings but I dont know that for a fact. Thanks, Kris
  10. kritter

    E-Nickel and Corrosion

    Im looking for recomendations on an E-nickel spec. Im designing a mono tube shock absorber for the aftermarket truck industry and the call out I am using thus far for prototypes is: Mid P 7% .0005 inch thick High P 11% .0005 inch thick I sent them out for corrosion testing and at 24 hours...

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