Hydraulic and Pneumatic Seals...since 1975
N is a single acting piston - rod seal and designed to have symmetrical lips in order to be used both for rod and piston applications..
PRODUCT ADVANTAGES:
APPLICATION:
Construction machinery , fork-lift trucks , injection moulding machines , agricultural machinery , loading platforms and standard cylinders
INSTALLATION:
Easy assembly into closed grooves. depending on the minimum diameter values indicated in the table below. Open grooves or special assembly tools are required for values that is used outside of this table there vallen.Als assembly tool the mounting area should not have any sharp edges. Before mounting the N must be lubricated with oil system.
| MINUMUM DIAMETER VALUES FOR CLOSED TYPE OF GROOVES | |||||||
| (D-d)/2 (mm) | 4 | 5 | 6 | 7.7 | 10 | 12.5 | 15 |
| dmin (mm) | 25 | 30 | 40 | 50 | 80 | 100 | 105 |
NOTES: For special applications that require high temperatures, N can be produced in FPM, also with a anti extrusion ring in ptfe white for high pressure c.a. 250 bar. The permissible gap values of N piston - rod seal is given in the below table
| PERMISSIBLE SEALING GAP Smax(mm) | |||
| t=(D-d)/2 | 50 Bar | 100 Bar | 150 Bar |
| t≤5 | 0.40 | 0.20 | 0.10 |
| t>5 | 0.45 | 0.25 | 0.15 |
Note: The largest sealing gap value occurring on the non-pressurized side of the seal does have a vital importance for the function of the seal and in this respect it is quite important to use the S value lower than the above indicated numbers.
| MATERIAL: NBR 90 SH |
| OPERATING CONDITIONS | |||||
| MEDIA | Mineral oils(DIN 51524) | HFA and HFB | HFC | ||
| TEMPERATURE | -30°C +105°C | +5°C +60°C | -30°C +60°C | ||
| PRESSURE | ≤150 Bar | ≤150 Bar | ≤150 Bar | ||
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≤0.5 m/sn | ≤0.5 m/sn | ≤0.5 m/sn | ||
Note: The above data are maximum values and cannot be used at the same time.
| SURFACE ROUGHNESS | Ra | Rmax |
| Sliding Surface ØD-Ød | ≤0.4 μm | ≤3.2 μm |
| Groove Base ØDb-Ødp | ≤1.6 μm | ≤10 μm |
| Groove Flanks B | ≤3.2 μm | ≤16 μm |
Note: It is recommended to have 50% to 90% of the working surface material contact area value.
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CB = Custom build (price on request)
* = Stock item
Stock = 0 (and not a Stock* or CB product) -> minimum item value € 20.00
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