|Genera l features||Unit||iglidur® V400||test method|
|Max. humidity absorption at 23°C/50% R. H.||Wt.-%||0,1||DIN 53495|
|Max. water absorption||Wt.-%||0,2|
|Coefficient of surface friction, dynamic, against steel||μ||0,15-0,20|
|pv value, max. (dry)||MPa x m/s||0,50|
|Bending E-module||MPa||4.500||DIN 53457|
|Tensile strength at +20 °C||MPa||95||DIN 53452|
|compressive strength||MPa||47||DIN 53452|
|Maximum recommended surface pressure (20° C)||MPa||45|
|Shore D-hardness||74||DIN 53505|
Physical and thermal properties
|Max. long term application temperature||°C||+200|
|Max. short term application temperature||°C||+240|
|Minimum application temperature||°C||-50|
|thermal / heat conductivity||W/m x K||0,24||ASTM C 177|
|Coefficient of thermal expansion (at 23° C)||K-1 x 10-5||3||DIN 53572|
|Specific forward resistance||Ωcm||> 1012||DIN IEC 93|
|Surface resistance||Ω||> 1012||DIN 53482|
|1) Without additional load; no gliding movement; relaxation not excluded.|
iglidur® V400 plain bearings are not suitable for high pressures or static high loads. However they are characterized by a high wear resistance all the way up to the maximum recommended surface pressure.
Maximum recommended surface pressure represents a mechanical material parameter. Tribological conclusions cannot be drawn from it.
With increasing temperatures, the compressive strength of iglidur® V400 plain bearings decreases. Fig. 02 clarifies this connection.
Moreover the limit of the permitted loads at +100°C is still very high with 20 MPa. The high elasticity is also shown in Fig. 03.
iglidur® V400 also permits high surface speeds due to the high temperature resistance. The very favorable coefficients of the bearing enable maximum surface speeds up to 1.3 m/s Even higher are the permitted speeds for linear movement and 3 m/s can be attained on the short term.
|iglidur® V400||Operating temperature|
|Lower||- 50 °C|
|Upper, long-term||+ 200 °C|
|Upper, short-term||+ 240 °C|
|Secure axially in addition||+ 100 °C|
The long-term permissible maximum application temperature is +200°C. An additional securing is required at temperatures above 100°C. The wear resistance of the bearing is however excellent and claims a top position among all iglidur® materials. The compressive strength of iglidur® V400 plain bearings decreases with increasing temperatures. This connection can be seen in Fig. 02.
The coefficient of friction is dependent on the stressing of the bearing (Fig. 04 and 05). Furthermore, the coefficients of friction of iglidur® V400 are very constant. No other iglidur® bearing material exhibits a lower variance of the coefficients of friction, even when the shaft material is changed.
|Coefficients of friction µ||0,15 - 0,20||0,09||0,04||0,04|
The influence of the shaft material on the wear resistance is greater than with the friction. Here already at low loads (0.75 MPa) there could be significant variations, as Figure 06 shows. In wear, the iglidur® V400 bearings additionally show better values in rotating applications than in swivelling motion (Fig. 07).
|Greases, oils without additives||+|
|Specific forward resistance||> 1012 Ωcm|
|Surface resistance||> 1012 Ω|
iglidur® V400 bearings have a good resistance against chemicals. They are resistant to cleaning agents, fats, oils, alcohol, solvents, diluted alkalis, as well as diluted acids.
iglidur® V400 bearings are resistant up to a radioactive intensity of 2 x 104 Gy. Higher radiation affects the mechanical properties.
iglidur® V400 bearings are largely resistant to UV rays.
The iglidur® V400 bearings can be used in vacuum only restrictedly. A degassing takes place.
iglidur® V400 bearings are electrically insulating.
|Maximum moisture absorption|
|at +23 °C/50 % r.F.||0,1 weight-%|
|Max. water absorption||0,2 weight-%|
The humidity absorption of the iglidur® V400 bearings amounts to just 0,2% with saturation in water.
|Up to 3||0 - 0,025||+0,006 +0,046||0 +0,010|
|> 3 bis 6||0 - 0,030||+0,010 +0,058||0 +0,012|
|> 6 bis 10||0 - 0,036||+0,013 +0,071||0 +0,015|
|> 10 bis 18||0 - 0,043||+0,016 +0,086||0 +0,018|
|> 18 bis 30||0 - 0,052||+0,020 +0,104||0 +0,021|
|> 30 to 50||0 - 0,062||+0,025 +0,125||0 +0,025|
|> 50 bis 80||0 - 0,074||+0,030 +0,150||0 +0,030|
iglidur® V400 plain bearings are standard bearings for shafts with h-tolerance (recommended minimum h9). The bearings are designed for press-fit in a housing with h7 tolerance. After the installation in a housing with nominal diameter, the inner diameter of the bearing automatically adjusts to the F10 tolerance. In certain dimensions the tolerance in dependence on the wall thickness deviates from this (See delivery program )