Single-acting Piston U-Ring P29 with asymmetrical profile and shortened outer lip. Recommended up to 10 Mpa working pressure. An back-up ring will extended working pressure up to 16 Mpa.
Piston U-Ring P29 can be installed in “back-to-back” position in double-acting piston design with pressure on both sides. It has Very good static and dynamic tightness and is good choice for specific requirements.
Light hydraulic cylinders.
Earth moving equipment
|Material base||NBR 85||NBR 85||NBR 80||FPM 85|
For applications that may require alternative materials or for verification current availability of tools and part numbers, contact us.
|Working pressure, P||10 MPa|
|Running speed, v||0,5 m/s|
|Medium, Working Temperature|
|Hydraulic oils HL, HLP||-30 to 100˚C||-50 to 90˚C||-60 to 80˚C||-15 to +200˚C|
|HFA, HFB fluids||+5 to +60˚C||+5 to +60˚C||+5 to +60˚C||–|
|HFC fluids||-30 to +60˚C||-30 to +60˚C||-30 to +60˚C||–|
|HFD fluids||–||–||–||-15 to +200˚C|
|Water||+5 to +90˚C||+5 to +90˚C||+5 to +80˚C||–|
|Mineral greases||-30 to +100˚C||-50 to +90˚C||-60 to +80˚C||-15 to +200˚C|
|Max. permissible gap dimension, emax|
|Max operating pressure||S ≤ 7,5mm||S > 7,5mm|
|Sliding surfaces||0.05.. 0,3 μm||≤ 2,5 μm|
|Groove base||≤ 1,6 μm||≤ 6,3 μm|
|Groove flanks||≤ 3,0 μm||≤ 15 μm|
*Contact area Mr = 50% to 90% at cutting depth c=Rz/2 and reference line Cref=0%