Oil Seal TM4
The TM4 profile is a special seal for motorcycles and bicycles shock absorbers, composed of an external metal core with an internal rubber coating, especially suitable for protecting the casing from erosive fluid.
CHARACTERISTICS
- High radial rigidity, particularly suitable for large diameters.
- Excellent stability after installation, effectively preventing any rebound effect.
- Sealing for low- and high-viscosity fluids
- Modern primary sealing lip with reduced radial forces.
- Protection against unwanted airborne contaminants
- Interior coating that protects the housing from erosive fluids.
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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