Page 316 - IGUS Bearing

iglidur X6 iglidur X6
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+250°C +250°C
150MPa 150MPa
Bearing technology | Plain bearings | iglidur X6 Technical data
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Permissible surface speeds Installation tolerances 1,000 0.35
The high temperature resistance and good thermal iglidur X6 plain bearings are standard bearings for 100 0.30
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conductivity values mean that iglidur X6 is suitable for shafts with h-tolerance (recommended minimum h9). 0.25
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high-speed applications. At the given speeds, friction can The bearings are designed for press-fit into a housing 10 0.20
cause a temperature increase to maximum permissible machined to a H7 tolerance. After being assembled into a 0.15
levels. In practice, though, this level is rarely reached due nominal size housing, in standard cases the inner diameter Surface pressure [MPa] 1 Coefficient of friction [µ] 0.10
to varying application conditions. automatically adjusts to the F10 tolerances. For particular 0.05
Surface speed, page 48 dimensions the tolerance differs depending on the wall 0.1 0.001 0.01 0.1 1.0 10.0 0.00
thickness (please see product range table). In relation to 0 10 20 30 40 50 60 70 80 90
Temperature the installation tolerance, the inner diameter changes with Surface speed [m/s] Load [MPa]
The ambient temperatures strongly influence the properties the absorption of humidity. Diagram 01: Permissible pv values for iglidur X6 plain Diagram 05: Coefficient of friction as a function of the
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of plain bearings. With regard to temperature resistance, Testing methods, page 61 bearing with a wall thickness of 1mm dry operation against pressure, v = 0.01m/s
iglidur X6 is among the highest in the iglidur range. In a steel shaft at +20°C, mounted in a steel housing
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many tests it has shown a six times higher wear resistance
compared to the established high-temperature specialist Chemicals Resistance 150 7
iglidur X. For temperatures over +165°C an additional Alcohols + 135 6
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securing is required. Diluted acids + 120 5
105
Application temperatures, page 53 Diluted alkalines + 90 4
Additional securing, page 53 Fuels + 75 3 Free cutting steel Cf53, hard chromed 304 stainless steel
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Greases, oils without additives + 45 2 H.a. aluminium HR carbon steel High grade steel
Friction and wear Hydrocarbons + 30 Wear [µm/km] 1 Cf53 steel
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Similar to wear resistance, the coefficient of friction μ also Strong acids + Load [MPa] 0 0
changes with the load. The coefficient of friction of iglidur X6 Strong alkalines + 20 50 80 120 150 200 250
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declines with higher pressure and is practically constant for All data given at room temperature [+20°C] Temperature [°C]
pressures above 30MPa. A higher speed of the shaft also Table 02: Chemical resistance Diagram 02: Maximum recommended surface pressure as a Diagram 06: Wear, rotating with different shaft materials,
results in a lower coefficient of friction (diagram 04 and 05). Chemical table, page 1170 function of temperature (150MPa at +20°C) pressure, p = 1MPa, v = 0.3m/s
Coefficient of friction and surfaces, page 51
Wear resistance, page 54 Rotating Oscillating linear 3.0 50
Long-term m/s 1.5 1.1 5.0 2.5 45 rotating
oscillating
Shaft materials Short-term m/s 3.5 2.5 10.0 2.0 +23°C 40
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The friction and wear are also dependent, to a large Table 03: Maximum surface speeds +60°C 30
degree, on the mating partner. Shafts that are too 1.5 25
20
smooth increase both the coefficient of friction and Dry Greases Oil Water 1.0 15
the wear of the bearing. The best case for iglidur X6 Coefficient of friction μ 0.09-0.25 0.09 0.04 0.04 Deformation [%] 0.5 Wear [µm/km] 10
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is a ground surface with an average surface finish Ra = Table 04: Coefficient of friction against steel (Ra = 1μm, 0.0 0
0.4-0.7µm. Diagram 06 shows a summary of the results 50HRC) 0 30 60 90 120 150 0 1 2 3 4 5 6 7 8 9 10
of tests with different shaft materials executed with plain Load [MPa] Load [MPa]
bearings made of iglidur X6. The best performance is Housing Plain bearings Shaft Diagram 03: Deformation under pressure and temperature Diagram 07: Wear for oscillating and rotating applications
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achieved with the plain shaft materials free cutting steel Ø d1 [mm] H7 [mm] F10 [mm] h9 [mm] with shaft material Cf53 hardened and ground steel, as a
and plain steel 1.0037. At higher loads, we recommend 0-3 +0.000 +0.010 +0.006 +0.046 -0.025 +0.000 function of the load
harder steel qualities. Non-hardened steel shafts can > 3-6 +0.000 +0.012 +0.010 +0.058 -0.030 +0.000
be worn by the bearing at pressures over 2MPa. The > 6-10 +0.000 +0.015 +0.013 +0.071 -0.036 +0.000
wear database shows that iglidur X6 is more suitable > 10-18 +0.000 +0.018 +0.016 +0.086 -0.043 +0.000
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for rotating than for pivoting applications (diagram 07). > 18-30 +0.000 +0.021 +0.020 +0.104 -0.052 +0.000
If the shaft material you plan on using is not shown in these > 30-50 +0.000 +0.025 +0.025 +0.125 -0.062 +0.000 Coefficient of friction [µ]
test results, please contact us. > 50-80 +0.000 +0.030 +0.030 +0.150 -0.074 +0.000
Shaft materials, page 56 > 80-120 +0.000 +0.035 -0.036 +0.176 -0.087 +0.000
> 120-180 +0.000 +0.040 +0.043 +0.203 +0.000 +0.100
Table 05: Important tolerances for plain bearings according Surface speed [m/s]
ASEAN 09/2023 ASEAN 09/2023 surface speed, p = 0.75MPa
to ISO 3547-1 after press-fit Diagram 04: Coefficient of friction as a function of the

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