Lubricant compatibility with oil seals
Approval | Explanation |
SEW07004_ _13: | A lubricant especially recommended with regard to compatibility with the approved oil seals. The lubricant exceeds the state-of-the-art requirements regarding elastomer compatibility. |
Permitted application temperature range of the oil seals
In the low temperature range, oil seals can withstand shaft deflections (e.g. through overhung load) only to a limited extent. Take special care to avoid or limit pulsating and changing radial displacements of the shaft. Contact SEW-EURODRIVE if necessary.
Oil seal material class | Permitted oil sump temperature |
|---|---|
NBR | -40°C to +80°C |
FKM | -25°C to +115°C |
FKM-PSS | -25°C to +115°C |
Limitations of use of oil seals with the specific lubricant are described in the following table:
Material class | Manufacturer | Material | ||||
|---|---|---|---|---|---|---|
S | 1
| NBR
| 1 | Freudenberg |
| 72 NBR 902 |
2 | Trelleborg |
| 4NV11 | |||
2 | FKM | 1 | Freudenberg
| 1 | 75 FKM 585 | |
2 | 75 FKM 170055 | |||||
2 | Trelleborg | 1 | VCBVR | |||
Examples:
S11: Only the elastomer 72NBR902 from Freudenberg meets the approval requirements in conjunction with the specific lubricant.
S2: Only the elastomer FKM meets the approval requirements in conjunction with the specific lubricant.
