Change Language :
iglidur® X - Material data
Permissible sliding speeds
iglidur® X is designed for higher speeds than other iglidur®-bearing. This is made possible by its high temperature resistance and particularly high thermal conductivity. This is also evident from the pv values of max. 1.32 MPa - m/s. At the same time, only minimal radial forces act on the bearing in this case. At the specified speeds, friction can lead to an increase up to the limit of the permanently permissible temperature.
Maximum surface speed
| m/s | Rotating | Oscillating | linear |
|---|---|---|---|
| permanent | 1.5 | 1.1 | 5 |
| Short-term | 3.5 | 2.5 | 10 |
Friction and wear
Like the wear resistance, the coefficient of friction μ also changes with the load (diagram. 04 and 05).
coefficient of friction for iglidur® X against steel (Ra = 1 μm, 50 HRC):
| iglidur® X | dry | Greases | Oil | Water |
|---|---|---|---|---|
| Coefficients of friction µ | 0.09-0.27 | 0.09 | 0.04 | 0.04 |
Diagram 04: Coefficient of friction as a function of the surface speed, p = 0.75MPa
X = surface speed [m/s]
Y = coefficient of friction μ
Friction and wear
Like the wear resistance, the coefficient of friction μ also changes with the load (diagram. 04 and 05).
Diagram 05: Coefficient of friction as a function of the pressure, v = 0.01m/s
X = load [MPa]
Y = coefficient of friction μ
Further information:
Shaft materials
Friction and wear are also highly dependent on the mating partner. Shafts that are too smooth increase the coefficient of friction of the bearing. Ground surfaces with an average surface finish Ra of 0.6 to 0.8 μm are ideal.
Diagrams 06 and 07 show an extension of the results of tests with different shaft materials that were carried out with iglidur® Xplain bearings. If your intended shaft material is not included in the test results presented here, please contact us.
Shaft materials
Installation tolerances
iglidur® X-plain bearings are standard bearings for shafts with h-tolerance (recommended minimum h9). The bearings are designed to be pressed into an H7-toleranced mounting. After installation in a mounting with nominal dimensions, the inner diameter of the bearing with F10 tolerance adjusts itself. For certain dimensions, the tolerance deviates depending on the wall thickness (see product range).
Important tolerances according to ISO 3547-1 after press-fitting:
| Diameter d1 [mm] | Shaft h9 [mm] | iglidur® X F10 [mm] | Housing H7 [mm] |
|---|---|---|---|
| up to 3 | 0 - 0.025 | +0.006 +0.046 | 0 +0.010 |
| > 3 up to 6 | 0 - 0.030 | +0.010 +0.058 | 0 +0.012 |
| > 6 up to 10 | 0 - 0.036 | +0.013 +0.071 | 0 +0.015 |
| > 10 up to 18 | 0 - 0.043 | +0.016 +0.086 | 0 +0.018 |
| > 18 up to 30 | 0 - 0.052 | +0.020 +0.104 | 0 +0.021 |
| > 30 up to 50 | 0 - 0.062 | +0.025 +0.125 | 0 +0.025 |
| >50 to 80 | 0 - 0.074 | +0.030 +0.150 | 0 +0.030 |
Chemical resistance
iglidur® X-plain bearings are almost universally resistant to chemicals. As a rule, they are only attacked by concentrated acids.
Radioactive radiation
Bearings made from iglidur® X are resistant to radiation up to a radiation intensity of 1 -105 Gy.
UV resistance
The excellent material properties of iglidur® X do not change under UV radiation and other weather influences.
Vacuum
Even in a vacuum, iglidur® Xplain bearings can be used almost without restriction. Evaporation occurs only to a very small extent.
Further specification
| Medium | Resistance |
|---|---|
| Alcohols | + |
| Hydrocarbons | + |
| Greases, oils without additives | + |
| Fuels | + |
| Diluted acids | + |
| Strong acids | - |
| Diluted alkalines | + |
| Strong alkalines | + |
Table 05: chemical resistance from iglidur®
+ resistant 0 conditionally resistant - not resistant
All data at room temperature [+20 °C]
Electrical specification
Plain bearings made from iglidur® X are electrically conductive.
| Electrical properties | |
|---|---|
| Specific transitional resistance | <105 Ωcm |
| Surface resistance | <103 Ω |
Typical application areas
Consulting
I look forward to answering your questions
Shipping and consultation
In person:
Monday to Friday from 7 am - 8 pm.
Saturdays from 8 am- 12 pm.
Online:
24h
WhatsApp-Service:
Montag – Freitag: 8 – 16 Uhr