Retainer SC
The SC profile is a radial shaft seal, for shaft sealing, consisting of a single metal cage with a rubber lining and a primary sealing lip with integrated spring.
CHARACTERISTICS
1. Good static sealing.
2. Compensation of different thermal expansion.
3. Reduced risk of fretting corrosion.
4. Increased surface roughness of the bore is permitted.
5. Installation in split housings.
See our gnstallation guide for oil seals to perform a correct installation of the seal.
| 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
| MANUFACTURER | EQUIVALENCE |
|---|---|
|
SIMRIT |
BA |
|
STEFA |
CB |
|
SKF |
HMS5 |
|
PAULSTRA |
IE |
|
NATIONAL |
33 |
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 |
| <500.0 ≤630.0 | +0.23/ +0.35 | +0.35/ +0.65 | +0.40/ +0.75 |
| <300.≤500.0 | +0.23/ +0.35 | +0.30/ +0.55 | +0.35/ +0.65 |
TOLERANCE FOR THE INNER DIAMETER OF THE SEAL
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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