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U-Ring | Profile | Material | Hardness | Bars | Temperature | Speed |
Rod | NBR | 90 SH A | ≤150 | -30 to +105 ºC | ≤0,50 m/s |
Rod U-rings have a lower inner lip than the outer lip and are generally used in single-acting applications. This model has a design specially adapted for heavy working conditions and a great performance in static applications.
Construction machinery, forklift trucks and standard cylinders.
FLUIDO | Mineral oils (DIN 51524) | HFA & HFB | HFC |
TEMPERATURE | -30 °C to +105 °C | +5 °C to +60 °C | -30 °C to + 60°C |
PRESSURE | ≤150 Bar | ≤150 Bar | ≤150 Bar |
SPEED | ≤0,5 m/sn | ≤0,5 m/sn | ≤0,5 m/sn |
| Ra | Rmax |
Dynamic surface | ≤0,4 μm | ≤3,2 μm |
Groove base | ≤1,8 μm | ≤10,0 μm |
Groove flanks | ≤3,0 μm | ≤16,0 μm |
Easily assembled into closed grooves according to the minimum diameter values that are given in the below table. Open grooves or special assembly tools should be used for the values that are outside this table. It is very important that the assembly tools must be of soft material and have no sharp edges. Before installation the wiper must be oiled with system oil.
Maximum permissible gap NBR
C/S | Pressure (Bar) | ||
50 | 100 | 160 | |
≤5 | 0.40 | 0.20 | 0.10 |
>5 | 0.45 | 0.25 | 0.15 |