ERIKS - V-Rings

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Sealing technologyNomograph for the peripheral speedWith the help of the table shown below, based on the diameter andthe RPM the peripheral speed can be determined. Example given:with a diameter of 30 mm and 3000 RPM the peripheral speed isabout 5 m/s.500 20.040015.030050004000300020015010.09.08.07.06.05.05.04.03.02.01.0100.050.040.030.025.02000150010090807060504.03.02.52.05.04.03.02.020.015.010.05.04.01000900800700600500401.51.03.02.54002.0300.51.53001.00.91.0200.8200150.70.60.51500.5mminchm/sft/sDiameter peripheral speed rpmin mmin m/sFig. 1714
V-ringsWatt7570V-0190656055V-01505045V-0120403530252015105V-0075V-0050V-0025V-001000 2 4 6 8 10 12 14 16 18 20 m/sec.Above schedule gives an impression on the power used. For AF or Surfapluscoated ERIKS V-rings this power will be reduced considerably.FrictionThe friction depends on:1. The rubber compoundEspecially the special AF (Anti Friction) compound gives a lowspecific friction up to 50% reduction depending on the RPM.However, availability is limited. For this reason ERIKS developeda coating that limits the friction to an absolute minimum! Pleaseask for the Surfaplus coated ERIKS V-ring.2. The peripheral speed.Up to a speed of 12 m/s friction increases. Over 12 m/s the frictiondecreases under influence of the centrifugal force.3. Tension.If the tension on the sealing lip is too high friction increases.Always mount the ERIKS V-ring with the right mounting width.4. LubricationThe presence of oil or grease positively influences the friction.5. The diameter of the ERIKS V-ringAn ERIKS V-ring with a large diameter gives more friction than anERIKS V-ring with a small diameterFig. 18Mounting the ERIKS V-ringThe mounting is very simple. The ERIKS V-ring can be stretchedup to 200% and be moved over the shaft. The ERIKS V-ring ispositioned towards the counterface by a blunt object. For serialmountings it is easier to make us of special tooling: some kind ofcap that moves over the shaft and directly places the ring in theright position.InstallationIn certain situations it is technically impossible to mount the ERIKSV-ring. In these situations the ERIKS V-ring can be cut and be madeendless again. Changing the ERIKS V-ring to an endless version canbe done in two ways:J with use of cyanoacrylate instant glue (glued version);J vulcanized by using special equipment.Glued versionIn case the ERIKS V-ring is glued together, it is to be noted that:J the temperature range does not exceed +70 ºCJ the glue resists to the media used.15
Page 1 and 2: V-rings
Page 3 and 4: V-ringsERIKS bvP.O. Box 280NL-1800
Page 5 and 6: V-ringsThe sealing principlebAn "ER
Page 7 and 8: V-ringsCounterface demandsThe frict
Page 9 and 10: V-ringsV-ring type A (continuation)
Page 11 and 12: V-ringsRX ® V-ring type SV-ring ty
Page 13 and 14: V-ringsRX ® V-ring type L NBRV-rin
Page 15: V-ringsV-ring type E NBR (continuat

ERIKS - V-Rings

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