Oil Seal DC4S
The DC4S profile is a double spring seal, special for motorcycles and bicycles shock absorbers, composed of a rubber-coated metal casing and two springs, one of which is exposed.
CHARACTERISTICS
- The semi-circular design of the secondary lip reduces friction and prevents reversal.
- Special design for automobile shock absorbers.
See our gInstallation guide for oil seals to perform a correct installation of the seal.
| ø | ºC | bar | m/s |
|---|---|---|---|
|
15-100 mm |
-30ºC / 100ºC |
≤ 6.5 bar |
≤ 1,5 m/s |
MATERIALS
Elastomer
NBR 80-90 Shore A
HNBR 80-90 Shore A
XNBR 80-90 Shore A
Metal casing
AISI 1060-90 - AISI 304 - AISI 316
Spring
AISI 1060-90 - AISI 302 - AISI 304 - AISI 316
TOLERANCES FOR THE OUTSIDE DIAMETER OF THE OIL SEAL
| Housing diameter | Metal cage | Elastomeric coating | Housing with grooves |
|---|---|---|---|
| ≤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 | +0.35 / +0.65 |
| <500.0 ≤630.0 | +0.23 / +0.35 | +0.35 / +0.65 | +0.40 / +0.75 |
TOLERANCE FOR THE INNER DIAMETER OF THE SEAL
The inner diameter of the sealing lip is always smaller than the shaft diameter. Depending on the shaft size, the sealing lip diameter is generally between 0.8 and 3.5 mm smaller than the shaft diameter.
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