SCW Retainer
The SCW profile is a single lip radial seal composed of a single metal cage with a rubber liner and a primary sealing lip with an integrated spring. The sealing lip has splines with a bi-directional direction of rotation, to follow the same rotation of the shaft and to control the expulsion of lubricants.
- Good static sealing.
- Compensation of different thermal expansion.
- Reduced risk of fretting corrosion.
- Easy to mount with very limited rebound effect.
- Seals for low and high viscosity fluids.
- Modern primary sealing lips with low radial forces.
- Grooved sealing lips with a bi-directional direction of rotation.
Please refer to our oil seal installation guide for proper oil seal installation.
| ø | ºC | bar | m/s |
|---|---|---|---|
|
10-790 mm |
-55ºC/225ºC |
≤0.3 bar |
≤10 m/s |
MATERIALS
Elastomer
NBR 70-75 Shore A
FKM 75-80 Shore A
VMQ 70-75 Shore A
ACM 70-75 Shore A
EPDM 70-75 Shore A
HNBR 70-75 Shore A
Metal Box
AISI 1060-90 - AISI 304 - AISI 316
Pier
AISI 1060-90 - AISI 302 - AISI 304 - AISI 316
TOLERANCES FOR THE OUTSIDE DIAMETER OF THE OIL SEAL
| Housing diameter | Metal cage | Elastomeric coating | Lace |
|---|---|---|---|
| ≤ 50.0 | +0.10 / +0.20 | +0.15 / +0.30 | +0.20 / +0.40 |
| <50.0 ≤80.0 | +0.13 / +0.23 | +0.20 / +0.35 | +0.25 / +0.45 |
| <80.0 ≤120.0 | +0.15 / +0.25 | +0.20 / +0.35 | +0.25 / +0.45 |
| <120.0 ≤180.0 | +0.18 / +0.28 | +0.25 / +0.45 | +0.30 / +0.55 |
| <180.0 ≤300.0 | +0.20 / +0.30 | +0.25 / +0.45 | +0.30 / +0.55 |
| <300.0 ≤500.0 | +0.23 / +0.35 | +0.30 / +0.55 | +0.30 / +0.55 |
| <500.0 ≤630.0 | +0.23 / +0.35 | +0.35 / +0.65 | +0.40 / +0.75 |
Seal bore tolerance (Ød)
When not under pressure, the inside diameter of the sealing lip is always smaller than the shaft diameter. The difference between the two dimensions is known as interference or pre-fitting. Depending on the shaft size, the sealing lip diameter is estimated to be between 0.8 mm and 3.5 mm smaller. It will depend on the setting chosen by each manufacturer.
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