Piston U-Ring Set P31
DESCRIPTION
Single-acting Piston U-Ring P31 for standardised housings according to ISO5597 has asymmetrical profile and shortened outer lip, High extrusion resistance thanks to integrated back-up ring and pressure-relieving grooves
Piston U-Ring P31 can be installed in “back-to-back” position in double-acting piston design with pressure on both sides.
APPLICATION
Heavy duty Earth moving equipment
Standard hydraulic cylinders.
Truck tail lift
Presses
Stabilizer cylinders
Agriculture equipment
Construction machinery
| Standard material | |
|---|---|
| Material set code | SU512 |
| U-cup Material | Polyurethane 94 ShA |
| Back-up ring | Acetal resine (POM) |
The U5002 material has high mechanical properties, high wear, high abrasion and media resistance
| Pressure, Speed | |
|---|---|
| Working pressure, P | 40 Mpa |
| Running speed, v | 0,5 m/s |
| Medium; Working Temperature | |
|---|---|
| Material set code | SU512 |
| Hydraulic oils HL, HLP | -30 … +110 °C |
| HFA, HFB fluids | +5 … +60 oC |
| HFC fluids | -30 … +40 °C |
| Water | +5 … +50 oC |
| Mineral greases | -30 … +110 °C |
| Max. permissible gap dimension, emax | ||
|---|---|---|
| Max operating pressure | S=7,5mm | S>7,5mm |
| 16 Mpa | 0,80 | 1,00 |
| 26 Mpa | 0,70 | 0,90 |
| 32 Mpa | 0,50 | 0,65 |
| 40 Mpa | 0,40 | 0,55 |
| Surface quality* | ||
|---|---|---|
| Surface roughness | Ra | Rmax |
| 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%
ØD
Ød
H
L