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iglidur  B                                                                                                                                                                                                              iglidur  B
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         +100°C                                                                                                                                                                                                                   +100°C
          40MPa                                                                                                                                                                                                                   40MPa
                      Bearing technology | Plain bearings | iglidur  B                                                              Technical data
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          Permissible surface speeds                          Chemicals                        Resistance                             100.0                                                0.7
          iglidur  B plain bearings can be continuously used up to   Alcohols                   + up to 0                              10.0                                                0.6
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          0.7m/s in rotating applications. The frictional heat provides   Diluted acids         0 up to –                                                                                  0.5
          the speed limits. In practice, though, this level is rarely   Diluted alkalines           –                                   1.0                                                0.4
          reached due to varying application conditions.      Fuels                                 –                                                                                      0.3
          Surface speed, page 48                              Greases, oils without additives       –                                Surface pressure [MPa]  0.1                        Coefficient of friction [µ]  0.2
                                                              Hydrocarbons                          –                                                                                      0.1
          Temperature                                         Strong acids                          –                                  0.01  0.001   0.01     0.1      1.0      10.0       0.0  0       10       20       30       40
          The maximum long-term application temperature is    Strong alkalines                      –
          +100°C. For temperatures over +50°C an additional                                                                           Surface speed [m/s]                                Load [MPa]
          securing is required. The wear resistance also decreases   All data given at room temperature [+20°C]                     Diagram 01: Permissible pv values for iglidur  B plain bearing   Diagram 05: Coefficient of friction as a function of the
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          exponentially from +70°C upwards.                  Table 02: Chemical resistance                                          with a wall thickness of 1mm dry operation against a steel   pressure, v = 0.01m/s
                                                             Chemical table, page 1170
          Application temperatures, page 53                                                                                         shaft at +20°C, mounted in a steel housing.
          Additional securing, page 53
                                                                               Rotating Oscillating   linear
                                                              Long-term  m/s      0.7       0.5        2.0                             120                                                 2.5
          Friction and wear                                   Short-term  m/s     1.0       0.7        3.0                             100
          The coefficient of friction increases slightly with the speed                                                                                                                    2.0
          and decreases with the load. Surface finishes (Ra) of the   Table 03: Maximum surface speeds                                  80                                                 1.5
          shaft between 0.4-0.6µm are ideal. As far as the bearing                 Dry    Greases Oil  Water                            60                                                 1.0         Free cutting steel   Cf53, hard chromed  304 stainless steel
          load is not too high, the attained coefficient of wear is pretty   Coefficient of friction μ 0.18-0.28  0.09  0.04  0.04      40                                                        H.a. aluminium       HR carbon steel  High grade steel
          good. An increase in load results in a disproportionate   Table 04: Coefficient of friction against steel (Ra = 1μm,          20                                              Wear [µm/km]  0.5   Cf53 steel
          increase in abrasion.                                                                                                      Load [MPa]  0                                         0.0
          Coefficient of friction and surfaces, page 51      50HRC)                                                                        20   30   40  50   60  70   80   90  100
          Wear resistance, page 54                                                                                                    Temperature [°C]
                                                                          Housing   Plain bearings   Shaft
                                                              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,
          Shaft materials                                     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
          The influence of the shaft is not very large on the wear   > 3-6  +0.000 +0.012 +0.030 +0.105 -0.030 +0.000
          resistance. Diagram 06 and 07 clarify that very similar wear   > 6-10  +0.000 +0.015 +0.040 +0.130 -0.036 +0.000             18.0                                                200
          data are attained with different shaft materials.   > 10-18   +0.000 +0.018 +0.050 +0.160 -0.043 +0.000                      15.0                                                180        rotating
                                                                                                                                                                                                      oscillating
          Shaft materials, page 56                                                                                                                                                         160
                                                              > 18-30   +0.000 +0.021 +0.065 +0.195 -0.052 +0.000                      12.0      +23°C                                     140
                                                                                                                                                 +60°C                                     120
                                                              > 30-50   +0.000 +0.025 +0.080 +0.240 -0.062 +0.000                       9.0                                                100
          Installation tolerances                             > 50-80   +0.000 +0.030 +0.100 +0.290 -0.074 +0.000                                                                          80
          iglidur  B plain bearings are standard bearings for shafts   > 80-120  +0.000 +0.035 +0.120 +0.340 -0.087 +0.000              6.0                                                60
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          with  h-tolerance (recommended minimum  h9).  The   > 120-180  +0.000 +0.040 +0.145 +0.395 -0.100 +0.000                   Deformation [%]  3.0                               Wear [µm/km]  40
                                                                                                                                                                                           20
          bearings are designed for press-fit into a housing machined                                                                   0.0                                                 0
          to a H7 tolerance. After being assembled into a nominal   Table 05: Important tolerances for plain bearings according            0         10       20       30       40             0        10       20       30       40
          size housing, the inner diameter automatically adjusts to   to ISO 3547-1 after press-fit                                   Load [MPa]                                         Load [MPa]
          the D11 tolerances. For particular dimensions the tolerance                                                               Diagram 03: Deformation under pressure and temperature  Diagram 07: Wear for oscillating and rotating applications
          differs depending on the wall thickness (please see product                                                                                                                  with shaft material Cf53 hardened and ground steel, as a
          range table).                                                                                                                                                                function of the load
          Testing methods, page 61                                                                                                      0.5

                                                                                                                                     Coefficient of friction [µ]  0.2
          Product range                                                                                                                 0.4
          iglidur  B plain bearings are manufactured to special order.                                                                  0.3
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                                                                                                                                        0.1
                                                                                                                                                   0.10
                                                                                                                                           0.05
                                                                                                                                      Surface speed [m/s]  0.15  0.20    0.25   0.30
                                                                                                                 ASEAN 09/2023   ASEAN 09/2023  surface speed, p = 0.75MPa
                                                                                                                                    Diagram 04: Coefficient of friction as a function of the



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