MU-J Self-Lubricated Bearings
Multilayer bushing (dry/lubricated Sliding Bearings) MU-J bearings are self lubricated material, derivate by Mu bearings, and are a three layer composite product.The Sliding layer in PTFE is applied with a special treatment and technique directly on a Bronze layer.
High wear options in oil media for hydraulic application and shock absorbers include material with special wear resistant fillers.
Sliding layer avialble with different colours.
- PTFE Modified antifriction surface layer 20 μm (Aprox)
- Porous bronze layer 0,19- 0,34 mm thickness.
- Low carbon steel supporting strip 0,50 - 2,70 mm thick depending on the size of the bush. The steel is plated for corrosion protection.
Operating Conditions
-
DRY -
OIL -
GREASE -
WATER -
PROCESS
FLUID
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Structure of the composite material
| Layer | Average analyses of the material | Thickness of layer |
|---|---|---|
| Sliding layer | PTFE Modified + Fillers | 15 - 25 μm
|
| Intermediate layer | CuSn11 Sintered | 190 - 340 μm
|
| Connecting layer | Cu | 1 - 3 μm |
| Supporting shell |
|
0,50 - 2,70 mm
|
| Protective Layer | Sn or Zn | > 1 μm |
Characteristics
- Fluids like oil or water permit higher PV factors;
- Friction factor not affected by “stick - slip” effect;
- Higher Chemical resistance to industrial fluids and gases (we recommend previous test for new application / project);
- Volume resistivity could be > 10 ohm, but completely depends on surface contact in assembly.
Technical Data
| Maximum Specific Load Static | 150 - 300 N/mm2 (29000 psi) |
|---|---|
| Maximum Specific Load Dynamic | 10 N/mm2 (1451 psi) |
| Service Temperature Minimum | -200°C (-328°F) |
| Service Temperature Maximum | +180°C (+356°F) |
| Maximum Sliding Speed Dry | 1 m/s |
| Maximum Sliding Speed Oil | 2.5 m/s |
| Coefficient of Friction Dry | 0.020 - 0.150 |
Applications
- Oil And Gas
- Agro Hydraulics
- Construction Machines
- Shock Absorber
Shapes and Geometries
The shape and geometry of every Technymon Bearing is designed to fit its specific application. We pay careful attention to the desired outcome, including crucial factors such as the clearance or interference fit with the mating components.
The shape of bearing can vary greatly, with characteristics such as spherical shapes washers and holes being customized to enhance the overall performance of the application.