|General features||Unit||iglidur® P||test method|
|Max. humidity absorption at 23°C/50% R. H.||% weight||0,3||DIN 53495|
|Max. water absorption||% weight||0,5|
|Coefficient of surface friction, dynamic, against steel||µ||0,07 - 0,19|
|PV values max. (dry)||MPa x m/s||0,4|
|Bending E-module||MPa||2.500||DIN 53457|
|Tensile strength at +20 °C||MPa||70||DIN 53452|
|Maximum recommended surface pressure (20° C)||MPa||50|
|Shore D hardness||75||DIN 53505|
Physical and thermal properties
|Max. long term application temperature||°C||+100|
|Max. short term application temperature||°C||+160|
|Lower application temperature||°C||-40|
|Heat conductivity||[W/m x K]||0,25||ASTM C 177|
|Coefficient of thermal expansion (at +23°C)||[K-1 x 10-5]||8||DIN 53752|
|Specific forward resistance||Ωcm||> 1012||DIN IEC 93|
|Surface resistance||Ω||> 1011||DIN 53482|
iglidur® P210 plain bearings provide users with versatile all-round bearings, which have demonstrated above average service life, primarily in pivot applications at medium loads of up to 20 MPa.
Maximum recommended surface pressure represents a mechanical material parameter. Tribological conclusions cannot be drawn from it. With increasing temperatures, the compressive strength of iglidur® P210 plain bearings decreases. Fig. 02 clarifies this connection.
Fig. 03 shows the elastic deformation of iglidur® P210 during radial loading. Under the maximum recommended surface pressure of 50 MPa, the deformation at room temperature amounts to less than 3 %.
Plain bearings made of iglidur® P210 are maintenance-free bearings developed for low to medium surface speeds. The maximum values stated in the Table 02 can be attained only with very low surface pressure. The specified maximum speed is the speed at which the long-term permitted temperature is reached by an increase in heat through friction.
|iglidur® P||Application temperature|
|Secure axially in addition||+50°C|
With its extreme long-term application temperature of +100°C, iglidur® P210 is suitable for a wide range of applications. If still higher temperatures are required, the best-seller iglidur® G with 130°C upper long-term temperature is available. The temperatures prevailing in the bearing system also have an influence on the bearing wear. Rising temperatures mean higher wear. An additional securing is recommended at temperatures higher than +50°C.
Figure 06 displays a summary of the results of tests with different shaft materials, which were conducted with iglidur® A210 plain bearings. In rotating movements below 1 MPa radial load, the wear of iglidur® P210 is generally very low. The wear is significantly higher only in combination with St37 shafts. In general, the wear during rotation is higher than for a swivel application with the same load. This reverses only from loads of 25 MPa (Fig. 07).
|Greases, oils without additives||+|
iglidur® P210 bearings have a good resistance against chemicals. They are resistant to most lubricants. iglidur® P210 is not affected by most weak organic and inorganic acids.
Bearings made of iglidur® P210 are conditionally usable under radioactive radiation. They are resistant up to a radiation intensity of3 x 10² Gy.
iglidur® P210 plain bearings have comparatively good UV resistance.
The existent humidity of iglidur® P210 bearings degasses in the vacuum. The use in vacuum is possible only limitedly.
iglidur® P bearings are electrically insulating.
|Specific forward resistance||> 1012 Ωcm|
|Surface resistance||> 1011 Ω|
|Maximum moisture absorption|
|by +23 °C/50 % r. F.||0,3 Wt.-%|
|Max. water absorption||0,5 Wt.-%|
The humidity absorption of iglidur® P210 bearings amounts to about 0.3 Wt.-% in standard climatic conditions. The saturation limit in water is 0,5 %. This minor humidity absorption is clearly below the values of iglidur® G.
|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® P210- 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 E10 tolerance. In certain dimensions the tolerance in dependence on the wall thickness deviates from this (See delivery program )