iglidur® G has been developed for low to medium surface speeds. The maximum values stated in the Table 02 can be attained only with minor pressure loads. At the specified speeds, an increase in temperature up to the long-term permitted value can occur due to friction. In practice these limit values are not always reached due to interactions.
|Coefficients of friction µ||0.08 - 0.15||0.09||0.04||0.04|
The friction and wear are also dependent, to a large degree, on the counter partner. Shafts that are too smooth increase both the coefficient of friction and the wear of the bearing. For iglidur® G a ground surface with an average surface finish Ra = 0.8µm is recommended. Diagram 06 shows an excerpt of the results of tests with various shaft materials that were carried out with iglidur® G plain bearings. It is important to notice that with increasing loads, the recommended hardness of the shaft increases. The "soft" shafts tend to wear themselves and thus increase the wear of the overall system. If the loads exceed 2MPa it is important to recognise that the wear rate (the gradient of the curves) clearly decreases with the hard shaft materials. If the shaft material you intend to use is not included in the test results presented here, please contact us.
|up to 3||0 - 0.025||+0.014 +0.054||0 +0.010|
|>3 to 6||0 - 0.030||+0.020 +0.068||0 +0.012|
|> 6 to 10||0 - 0.036||+0.025 +0.083||0 +0.015|
|> 10 to 18||0 - 0.043||+0.032 +0.102||0 +0.018|
|> 18 to 30||0 - 0.052||+0.040 +0.124||0 +0.021|
|> 30 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 to 180||0 - 0.100||+0.085 +0.245||0 +0.040|
iglidur® G 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 into a nominal size housing, the inner diameter of the bearing automatically adjusts to the E10 tolerances. For certain dimensions the tolerance differs depending on the wall thickness (see product range)
|Alcohols||+ to 0|
|Greases, oils without additives||+|
|Diluted acids||0 to -|
|Specific forward resistance||> 1013 Ωcm|
|Surface resistance||> 1011 Ω|
Chemical resistanceiglidur® G bearings have a good resistance against chemicals at room temperature. They are resistant to most lubricants. iglidur® G is not affected by most weak organic and inorganic acids.
Radioactive raysiglidur® G bearings are radiation resistant up to a radioactive intensity of 3 • 102 Gy.
UV-resistantiglidur® G bearings are permanently resistant against UV rays.
VacuumIn vacuum, iglidur® G degases. The application in vacuum is possible only for dry bearings.
Electrical propertiesiglidur® G bearings are electrically insulating.