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iglidur J - material data
What you will find on this page
The most important specifications at a glance
| Descriptive technical specifications | ||
|---|---|---|
| Wear resistance at +23°C | - 🟧 🟧 🟧 🟧 🟧 + | More information on wear resistance |
| Wear resistance at +90°C | - 🟧 🟧 🟧 🟧 🟧 + | |
| Wear resistance at +150°C | - 🟧 ⬜️ ⬜️ ⬜️ ⬜️ + | |
| Low coefficient of friction | - 🟧 🟧 🟧 🟧 🟧 + | Coefficient of friction µ, dry: 0.06 - 0.18 |
| Low moisture absorption | - 🟧 🟧 🟧 🟧 ⬜️ + | More information on moisture absorption |
| Wear resistance under water | - 🟧 🟧 🟧 ⬜️ ⬜️ + | Coefficient of friction µ: 0.04 |
| High media resistance | - 🟧 🟧 🟧 🟧 ⬜️ + | More information on media resistance |
| Resistant to edge pressures | - 🟧 🟧 🟧 🟧 ⬜️ + | |
| Suitable for shock and impact loads | - 🟧 🟧 🟧 🟧 ⬜️ + | |
| Resistant to dirt | - 🟧 🟧 🟧 🟧 ⬜️ + |
Mechanical specifications
The compressive strength of iglidur J plain bearings decreases with increasing temperatures. Diagram 02 illustrates this relationship. At the long-term permissible application temperature of +90°C, the permissible surface pressure is approximately 20MPa. The maximum recommended surface pressure represents a mechanical material parameter. Conclusions about the tribology cannot be drawn from this. With a maximum recommended surface pressure of 35MPa, iglidur J plain bearings are not suitable for extreme loads. Diagram 03 shows the elastic deformation of iglidur J under radial loads.
Permissible sliding speeds
The low coefficient of friction and the very low stick-slip tendency of iglidur® J plain bearings are particularly important at very low speeds. However, iglidur® J can also be used for high speeds of over 1m/s. In both cases, the static friction is very low and there is almost no stick-slip. The maximum values given in table 02 can only be achieved at low pressure loads. At the specified speeds, friction can lead to an increase up to the limit of the permanently permissible temperature. In practice, these limit values cannot always be achieved due to the interaction of different influences.
Maximum surface speed
| m/s | Rotating | Oscillating | linear |
|---|---|---|---|
| permanent | 1.5 | 1.1 | 8 |
| Short-term | 3 | 2.1 | 10 |
Friction and wear
Like the wear resistance, the coefficient of friction μ also changes with the load (diagrams 04 and 05).
| iglidur J | dry | Greases | Oil | Water |
|---|---|---|---|---|
| Coefficient of friction µ | 0.06-0.18 | 0.09 | 0.04 | 0.04 |
Shaft materials
Friction and wear are also highly dependent on the mating partner. The coefficient of friction of the pairing increases with increasing shaft roughness. A smoothed surface with an average surface finish Ra = 0.1 to 0.3μm is most suitable. Diagrams 06 and 07 show an extension of the results of tests with different shaft materials that were carried out with iglidur® J plain bearings. Compared to most other iglidur® materials, the wear of iglidur® J plain bearings is very low at low loads with all shaft materials tested. Even with increasing loads in the range up to 5MPa, the wear resistance of iglidur® J plain bearings is excellent. If your intended shaft material is not included in the test results presented here, please contact us.
Installation tolerances
iglidur J plain bearings are standard bearings for shafts with H-tolerance (recommended minimum h9). The bearings are designed for press-fit into a housing machined to a h7 tolerance. After being assembled in a nominal size housing, the inner diameter automatically adjusts to the E10 tolerances. For particular dimensions the tolerance differs depending on the wall thickness (please see product range table).
| Diameter d1 [mm] | Shaft h9 [mm] | iglidur® J E10 [mm] | Housing H7 [mm] |
|---|---|---|---|
| up to 3 | 0 - 0.025 | +0.014 +0.054 | 0 +0.010 |
| > 3 up to 6 | 0 - 0.030 | +0.020 +0.068 | 0 +0.012 |
| > 6 up to 10 | 0 - 0.036 | +0.025 +0.083 | 0 +0.015 |
| > 10 up to 18 | 0 - 0.043 | +0.032 +0.102 | 0 +0.018 |
| > 18 up to 30 | 0 - 0.052 | +0.040 +0.124 | 0 +0.021 |
| > 30 up to 50 | 0 - 0.062 | +0.050 +0.150 | 0 +0.025 |
| >50 to 80 | 0 - 0.074 | +0.060 +0.180 | 0 +0.030 |
| >80 to 120 | 0 - 0.087 | +0.072 +0.212 | 0 +0.035 |
| > 120 up to 180 | 0 - 0.100 | +0.085 +0.245 | 0 +0.040 |
Chemical resistance
iglidur® J plain bearings are resistant to diluted alkalis and very weak acids as well as fuels and all types of lubricants. The low moisture absorption also allows use in wet or humid environments. Plain bearings made of iglidur® J are resistant to common cleaning agents in the food industry.
| Medium | Resistance (all data at +20°C) |
|---|---|
| Alcohols | + |
| Hydrocarbons | + |
| Greases, oils without additives | + |
| Fuels | + |
| Diluted acids | 0 to - |
| Strong acids | - |
| Diluted alkalines | + |
| Strong alkalines | + up to 0 |
Buy iglidur J products in the online shop
- Large selection of moulds and materials
- Available within 24 hours
- No minimum order value
- No minimum order quantity
Typical application areas
Printing industry
Beverage industry
Aviation and aerospace
Cleanroom
Consulting
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