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iglidur X iglidur X
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+250°C +250°C
150MPa 150MPa
Bearing technology | Plain bearings | iglidur X Technical data
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Permissible surface speeds Installation tolerances 1,000 0.35
iglidur X is designed for higher speeds than other iglidur iglidur X plain bearings are standard bearings for 100 0.30
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bearings. This is enabled by its high temperature resistance shafts with h-tolerance (recommended minimum h9). 0.25
and excellent thermal conductivity. This is also made clear The bearings are designed for press-fit into a housing 10 0.20
by the max. pv value of 1.32MPa. However, in this case, machined to a H7 tolerance. After being assembled into a 0.15
only the smallest radial loads may act on the bearings. nominal size housing, in standard cases the inner diameter Surface pressure [MPa] 01 Coefficient of friction [µ] 0.10
At the given speeds, friction can cause a temperature automatically adjusts to the F10 tolerances. For particular 0.05
increase to maximum permissible levels. dimensions the tolerance differs depending on the wall 0.1 0.001 0.01 0.1 1.0 10.0 0.00
Surface speed, page 48 thickness (please see product range table). 0 10 20 30 40 50 60 70 80 90
Testing methods, page 61 Surface speed [m/s] Load [MPa]
Temperature Diagram 01: Permissible pv values for iglidur X plain bearing Diagram 05: Coefficient of friction as a function of the
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In the case of a permissible long-term application tempera- with a wall thickness of 1 mm dry operation against a steel pressure, v = 0.01m/s
ture of +250°C, iglidur X will even withstand +315°C Chemicals Resistance shaft at +20°C, mounted in a steel housing
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for short periods. As in the case of all thermoplastics, Alcohols +
the compression strength of iglidur X decreases when Diluted acids + 160 35.0
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temperatures rise. For temperatures over +135°C an additi- Diluted alkalines + 140 30.0
onal securing is required. At temperatures over +170°C Fuels + 120 25.0
the axial security of the bearing in the housing needs to Greases, oils without additives + 100 20.0
be tested. Please contact us if you have questions on Hydrocarbons + 80 15.0 Free cutting steel Cf53, hard chromed 304 stainless steel
bearing use. Strong acids 0 up to – 60 10.0 H.a. aluminium HR carbon steel High grade steel
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Application temperatures, page 53 Strong alkalines + 20 Wear [µm/km] 5.0 Cf53 steel
Additional securing, page 53 All data given at room temperature [+20°C] Load [MPa] 0 0.0
Table 02: Chemical resistance 20 50 100 150 200 250
Friction and wear Chemical table, page 1170 Temperature [°C]
Similar to wear resistance, the coefficient of friction µ also Diagram 02: Maximum recommended surface pressure as a Diagram 06: Wear, rotating with different shaft materials,
changes with the surface speed and load (diagrams 04 Rotating Oscillating linear function of temperature (150MPa at +20°C) pressure, p = 1MPa, v = 0.3m/s
and 05). Long-term m/s 1.5 1.1 5.0
Coefficient of friction and surfaces, page 51 Short-term m/s 3.5 2.5 10.0 8 70
Wear resistance, page 54 Table 03: Maximum surface speeds 60 rotating
oscillating
6 50
Shaft materials Dry Greases Oil Water +23°C 40
+60°C
The friction and wear are also dependent, to a large Coefficient of friction μ 0.09-0.27 0.09 0.04 0.04 4 30
degree, on the mating partner. Shafts that are too smooth Table 04: Coefficient of friction against steel (Ra = 1μm, 2 20
increase both the coefficient of friction and the wear of the 50HRC) Deformation [%] Wear [µm/km] 10
bearing. For iglidur X a ground surface with an average 0 0
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surface finish Ra = 0.6-0.8µm is recommended. Diagram Housing Plain bearings Shaft 0 25 50 75 100 Cf53 hard 304SS
06 and 07 display a summary of the results of tests with Ø d1 [mm] H7 [mm] F10 [mm] h9 [mm] Load [MPa] chromed
different shaft materials executed with plain bearings made 0-3 +0.000 +0.010 +0.006 +0.046 -0.025 +0.000 Diagram 03: Deformation under pressure and temperature Diagram 07: Wear for rotating and oscillating applications
of iglidur X. If the shaft material you plan on using is not > 3-6 +0.000 +0.012 +0.010 +0.058 -0.030 +0.000 with different shaft materials, p = 2MPa
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shown in these test results, please contact us. > 6-10 +0.000 +0.015 +0.013 +0.071 -0.036 +0.000
Shaft materials, page 56 > 10-18 +0.000 +0.018 +0.016 +0.086 -0.043 +0.000 0.4
> 18-30 +0.000 +0.021 +0.020 +0.104 -0.052 +0.000
> 30-50 +0.000 +0.025 +0.025 +0.125 -0.062 +0.000 0.3
> 50-80 +0.000 +0.030 +0.030 +0.150 -0.074 +0.000
> 80-120 +0.000 +0.035 -0.036 +0.176 -0.087 +0.000 Coefficient of friction [µ] 0.2
> 120-180 +0.000 +0.040 +0.043 +0.203 +0.000 +0.100
Table 05: Important tolerances for plain bearings according 0.1
to ISO 3547-1 after press-fit 0.05 0.10 0.15 0.20 0.25 0.30 0.35

Surface speed [m/s]
ASEAN 09/2023 ASEAN 09/2023 surface speed, v = 0.01m/s
Diagram 04: Coefficient of friction as a function of the

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