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iglidur C iglidur C
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+90°C +90°C
40MPa 40MPa
Bearing technology | Plain bearings | iglidur C Technical data
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Permissible surface speeds Chemicals Resistance 100.0 0,7
Although important solid lubricants were intentionally not Alcohols + up to 0 10.0 0,6
used in the development of iglidur C, the plain bearings Diluted acids 0 up to – 0,5
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are very wear-resistant and are therefore also suitable Diluted alkalines + 1.0 0,4
for continuous movements at medium surface speeds. Fuels + 0,3
Despite it being possible to temporarily attain rotational Greases, oils without additives + Surface pressure [MPa] 0.1 Coefficient of friction [µ] 0,2
speeds of up to 1.5m/s, the main applications should Hydrocarbons + 0,1
nevertheless involve speeds of less than 0.5m/s. Strong acids – 0.01 0.001 0.01 0.1 1.0 10.0 0,0
Surface speed, page 48 Strong alkalines 0 0 10 20 30 40 50 60 70 80
Surface speed [m/s] Load [MPa]
All data given at room temperature [+20°C]
Temperature Diagram 01: Permissible pv values for iglidur C plain bearing Diagram 05: Coefficient of friction as a function of the
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The iglidur C plain bearings can be used at temperatures Table 02: Chemical resistance with a wall thickness of 1mm dry operation against a steel pressure, v = 0.01m/s
Chemical table, page 1170
up to +130°C for short periods. However no real loads shaft at +20°C, mounted in a steel housing.
are possible at this temperature. It therefore makes sense Rotating Oscillating linear
to limit the temperature to around +80°C to +90°C. Long-term m/s 1.0 0.7 2.0 60 1.0
For temperatures over +40°C an additional securing is Short-term m/s 1.5 1.1 3.0 50 0.9
required. 0.8
0.7
Application temperatures, page 53 Table 03: Maximum surface speeds 40 0.6
Additional securing, page 53 30 0.5 Cf53, hard chromed
Dry Greases Oil Water 20 0.4 H.a. aluminium Free cutting steel HR carbon steel 304 stainless steel High grade steel
Coefficient of friction μ 0.17-0.25 0.09 0.04 0.04 0.3 Cf53 steel
Friction and wear Table 04: Coefficient of friction against steel (Ra = 1μm, 10 Wear [µm/km] 0.2
0.1
The coefficient of friction of the iglidur C plain bearing is Load [MPa] 0 0.0
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dependent to a large degree on the surface finish of the 50HRC) 20 30 40 50 60 70 80 90
shaft. The wear of the bearing is very good in applications Housing Plain bearings Shaft Temperature [°C]
with rotating or pivoting movements with low loads. Ø d1 [mm] H7 [mm] D11 [mm] h9 [mm] Diagram 02: Maximum recommended surface pressure as a Diagram 06: Wear, rotating with different shaft materials,
Coefficient of friction and surfaces, page 51 0-3 +0.000 +0.010 +0.020 +0.080 -0.025 +0.000 function of temperature (40MPa at +20°C) pressure, p = 1MPa, v = 0.3m/s
Wear resistance, page 54
> 3-6 +0.000 +0.012 +0.030 +0.105 -0.030 +0.000
> 6-10 +0.000 +0.015 +0.040 +0.130 -0.036 +0.000 15.8 200
Shaft materials > 10-18 +0.000 +0.018 +0.050 +0.160 -0.043 +0.000 180 rotating
oscillating
Diagram 06 clearly shows how important the most > 18-30 +0.000 +0.021 +0.065 +0.195 -0.052 +0.000 +23°C 160
140
"suitable" shaft can be. Although all shown results of these > 30-50 +0.000 +0.025 +0.080 +0.240 -0.062 +0.000 +60°C 120
rotation experiments can be understood as very good, > 50-80 +0.000 +0.030 +0.100 +0.290 -0.074 +0.000 5.5 100
80
the difference is sometimes significant. This difference > 80-120 +0.000 +0.035 +0.120 +0.340 -0.087 +0.000 60
increases still further with increasing loads. > 120-180 +0.000 +0.040 +0.145 +0.395 -0.100 +0.000 Deformation [%] Wear [µm/km] 40
20
Shaft materials, page 56 0.0 0
Table 05: Important tolerances for plain bearings according 0 10 20 30 40 0 10 20 30 40
to ISO 3547-1 after press-fit
Installation tolerances Load [MPa] Load [MPa]
iglidur C plain bearings are standard bearings for shafts Diagram 03: Deformation under pressure and temperature Diagram 07: Wear for oscillating and rotating applications
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with h-tolerance (recommended minimum h9). The with shaft material Cf53 hardened and ground steel, as a
bearings are designed for press-fit into a housing machined function of the load
to a H7 tolerance. After being assembled into a nominal 0.5
size housing, the inner diameter automatically adjusts to 0.4
the D11 tolerances. For particular dimensions the tolerance
differs depending on the wall thickness (please see product 0.3
range table). Coefficient of friction [µ]
Testing methods, page 61 0.2

Product range 0.1
0.05
0.10
iglidur C plain bearings are manufactured to special order. Surface speed [m/s] 0.15 0.20 0.25 0.30
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ASEAN 09/2023 ASEAN 09/2023 Diagram 04: Coefficient of friction as a function of the
surface speed, p = 0.75MPa

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