Radial Seal MR17
DESCRIPTION
Radial Seal MR17 is double-acting rod seal and are used in hydraulic rotary transmission systems.
It seals the pressure lines from each other and are suitable for high hydraulic pressures in the case of pivoting motions.
It consists of rubber part that firmly carry fabric blocs on both side providing lubrications on sliding surfaces. These fabric bloks contacting surfaces of housing prevent the seal from extruding into the sealing gap and circumference deformation. Has high and secure static sealing.
APPLICATION
Exscavators
Grippers
Swivel joints
Hose reels
| Standard material | ||||
|---|---|---|---|---|
| Material Set Code | N4271 | |||
| Material base | NBR Rubber | |||
| Fabric | Cotton | |||
For very low temperature applications up to -60 C, or excellent medium-rubber compatybility in special applications a few materials are recommended and
available on request.
| Pressure, Speed | |
|---|---|
| Working pressure, P | Max 20 Mpa |
| Running speed v, | Up to 0.1 m/s |
| Medium, Working Temperature | |
|---|---|
| Material Code | N4271 |
| Hydraulic oils: HL, HLP | -30 … +80 °C |
| HFA, HBA fluids | +5 … +60 oC |
| HFC fluids | -30 … +60 °C |
| Water | +5 … +80 oC |
| Mineral greases | -30 … +80 °C |
| Tolerances | ||
|---|---|---|
| Ød | emax | ØD |
| ≤ 60 | H9/f8 | H9 |
| > 60 | H8/f7 | H9 |
| Surface finish* | ||
|---|---|---|
| Surface roughness | Ra | Rmax |
| Sliding surfaces | 0.05 .. 0,3μm | ≤ 2.5 μm |
| Groove base | ≤ 1.6 μm | ≤ 6.3 μm |
| Groove flanks | ≤ 3 μm | ≤ 15 μm |
| Installation | ||
|---|---|---|
| For diameters < 40 mm open grooves are required |
Ød
ØD
H
L