description
scraper ring, mainly used in combination with wiper WR 07. firmly clinging dirt and extremely heavy soiling (mud, tar, ice) is wiped off, following elastomeric wiper is protected from damage. recommended materials provide good dry running proper- ties, high stiffness and breaking strenght.
- this design has been developed as a scraper ring and is used in combination with
WR 07 wipers.
- housing fit required is H9.
- the recommended materials offer good dry running properties, as well as high stiffness, stability and breaking strength.
application
not bolded symbols; please consult our technical for application limitations
category of profile
machined only.
single acting
area of application: hydraulics & pneumatics
reciprocating on working cylinders with hard and encrusted dirt in combination with WR 07.
function:
WR 07 wipers are designed to scrape off hard and encrusted dirt in front of the wiper, thereby protecting the elastomer wiper from dam- age.
for detailed information regarding chemical resistance please refer to our “list of resistance”.
surface quality
| surface roughness |
Rtmax (μm) |
Ra (μm) |
| sliding surface | according to seal data | |
| bottom of groove | ≤6,3 | ≤1,6 |
| groove face | ≤15 | ≤3 |
tolerance recommendation
| seal housing | tolerances |
| L | 0.2 |
| ØD1 | ±0,1 |
| ØD | h9 |
mode of installation
the wiper can be snapped in. prerequisite is the correct design of the groove geometry. the diameter of the retaining step should be approx.
1 mm smaller than the outside diameter. a corresponding chamfer is required for fitting. usually, a thickness of 2 to 2.5mm should be sufficient. for a more sturdy design, retaining rings may be required.
seal & housing recommendations
please note that we are able to produce those profiles to your specific need or any non standard housing. for detail measurements, please see jet seal pars catalog…
fitted:
don’t hesitate to contact our technical department for further information or for special requirements (temperature, speed etc.), so that suitable materi- als and/or designs can be recommended.