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iglidur  J                                                                                                                                                                                                              iglidur  J
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          +90°C                                                                                                                                                                                                                   +90°C
          35MPa                                                                                                                                                                                                                   35MPa
                      Bearing technology | Plain bearings | iglidur  J                                                              Technical data
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          Permissible surface speeds                         Installation tolerances                                                  100.0                                               0.30
          The low coefficient of friction and no stick-slip tendency   iglidur  J plain bearings are standard bearings for shafts      10.0                                               0.25
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          of iglidur  J plain bearings are particularly important at   with  h-tolerance (recommended minimum  h9).  The                                                                  0.20
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          very low speeds. However, iglidur  J can also be used   bearings are designed for press-fit into a housing machined           1.0                                               0.15
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          for high speeds of over 1m/s. In both cases the static   to a H7 tolerance. After being assembled into a nominal                                                                0.10
          friction is very low and stick slip does not occur. The   size housing, the inner diameter automatically adjusts to        Surface pressure [MPa]  0.1                        Coefficient of friction [µ]  0.05
          maximum values shown in table 03 can only be achieved   the E10 tolerances. For particular dimensions the tolerance
          at low pressures. At the given speeds, friction can cause   differs depending on the wall thickness (please see product      0.01  0.001   0.01     0.1      1.0      10.0      0.00
          a temperature increase to maximum permissible levels. In   range table).                                                                                                             0    5    10   15    20   25   30   35
          practice, though, this level is rarely reached due to varying   Testing methods, page 61                                    Surface speed [m/s]                                Load [MPa]
          application conditions.                                                                                                   Diagram 01: Permissible pv values for iglidur  J plain bearing   Diagram 05: Coefficient of friction as a function of the
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          Surface speed, page 48                                                                                                    with a wall thickness of 1mm dry operation against a steel   pressure, v = 0.01m/s
                                                              Chemicals                        Resistance                           shaft at +20°C, mounted in a steel housing
          Temperature                                         Alcohols                             +
          iglidur  J plain bearings can be used between -50°C and   Diluted acids               0 up to –                              120                                                  1.2
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          +90°C; the short-term maximum permissible temperature   Diluted alkalines                +                                   100                                                 1.0
          is +120°C. Wear increases significantly at temperatures   Fuels                          +
          above +80°C. For temperatures over +60°C an additional   Greases, oils without additives  +                                   80                                                 0.8
          securing is required.                               Hydrocarbons                         +                                    60                                                 0.6         Free cutting steel   Cf53, hard chromed  304 stainless steel
          Application temperatures, page 53                   Strong acids                          –                                   40                                                 0.4    H.a. aluminium       HR carbon steel  High grade steel
          Additional securing, page 53                        Strong alkalines                  + up to 0                               20                                              Wear [µm/km]  0.2   Cf53 steel
                                                             All data given at room temperature [+20°C]                              Load [MPa]  0                                         0.0
          Friction and wear                                  Table 02: Chemical resistance                                                 20    30   40   50   60    70   80   90
          Similar to wear resistance, the coefficient of friction µ also   Chemical table, page 1170                                  Temperature [°C]
          changes with the surface speed and load (diagrams 04                                                                      Diagram 02: Maximum recommended surface pressure as a   Diagram 06: Wear, rotating with different shaft materials,
          and 05).                                                             Rotating Oscillating   linear                        function of temperature (35MPa at +20°C)           pressure, p = 1MPa, v = 0.3m/s
          Coefficient of friction and surfaces, page 51       Long-term  m/s      1.5       1.1        8.0
          Wear resistance, page 54                            Short-term  m/s     3.0       2.1       10.0                             12.5                                                3.5
                                                             Table 03: Maximum surface speeds                                                                                              3.0   rotating
                                                                                                                                                                                                 oscillating
          Shaft materials                                                                                                              10.0      +23°C                                     2.5
          The friction and wear are also dependent, to a large                     Dry    Greases Oil  Water                            7.5      +60°C                                     2.0
          degree, on the mating partner. With increasing shaft   Coefficient of friction μ 0.06-0.18  0.09  0.04  0.04                  5.0                                                1.5
          surface finish, the coefficient of friction also increases. For   Table 04: Coefficient of friction against steel (Ra = 1μm,                                                     1.0
          iglidur  J a ground surface with an average surface finish   50HRC)                                                        Deformation [%]  2.5                               Wear [µm/km]  0.5
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          Ra = 0.1-0.3µm is recommended. Diagram 06 and 07                                                                              0.0                                                0.0
          display a summary of the results of tests with different shaft      Housing  Plain bearings  Shaft                               0.0       12.5     25.0     37.5     50.0             Cf53     hard     304SS  HR carbon
          materials executed with plain bearings made of iglidur  J.   Ø d1 [mm]  H7 [mm]  E10 [mm]  h9 [mm]                          Load [MPa]                                                         chromed             steel
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          When compared to most other iglidur  materials, iglidur  J    0-3  +0.000 +0.010 +0.014 +0.054 -0.025 +0.000              Diagram 03: Deformation under pressure and temperature  Diagram 07: Wear for rotating and oscillating applications
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          plain bearings have very low wear results at low loads   > 3-6  +0.000 +0.012 +0.020 +0.068 -0.030 +0.000                                                                    with different shaft materials, p = 2MPa
          compared with all shaft materials tested. Also, for increasing    > 6-10  +0.000 +0.015 +0.025 +0.083 -0.036 +0.000
          loads up to 5 MPa, the wear resistance of iglidur  J plain   > 10-18  +0.000 +0.018 +0.032 +0.102 -0.043 +0.000               0.4
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          bearings is excellent. If the shaft material you plan on using   > 18-30  +0.000 +0.021 +0.040 +0.124 -0.052 +0.000
          is not shown in these test results, please contact us.  > 30-50  +0.000 +0.025 +0.050 +0.150 -0.062 +0.000                    0.3
          Shaft materials, page 56                            > 50-80   +0.000 +0.030 +0.060 +0.180 -0.074 +0.000
                                                              > 80-120  +0.000 +0.035 +0.072 +0.212 -0.087 +0.000                    Coefficient of friction [µ]  0.2
                                                              > 120-180  +0.000 +0.040 +0.085 +0.245 -0.100 +0.000
                                                             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, p = 0.75MPa
                                                                                                                                    Diagram 04: Coefficient of friction as a function of the



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