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iglidur  Z                                                                                                                                                                                                              iglidur  Z
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         +250°C                                                                                                                                                                                                                   +250°C
         150MPa                                                                                                                                                                                                                   150MPa
                      Bearing technology | Plain bearings | iglidur  Z                                                              Technical data
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          Permissible surface speeds                          Chemicals                        Resistance                             1,000                                               0.25
          iglidur  Z is a high temperature material that is suitable   Alcohols                    0                                    100                                               0.20
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          for applications involving very high specific loads. The   Diluted acids                 +                                                                                      0.15
          maximum values shown in table 03 can only be achieved   Diluted alkalines                +                                     10
          at low pressures. At the given speeds, friction can cause   Fuels                        +                                                                                      0.10
          a temperature increase to maximum permissible levels. In   Greases, oils without additives  +                              Surface pressure [MPa]  1                          Coefficient of friction [µ]  0.05
          practice, though, this level is rarely reached due to varying   Hydrocarbons             +
          application conditions.                             Strong acids                          –                                   0.1  0.001   0.01     0.1      1.0      10.0      0.00
          Surface speed, page 48                              Strong alkalines                      –                                                                                          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  Z plain bearing   Diagram 05: Coefficient of friction as a function of the
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          The iglidur  Z 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
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                                                             Chemical table, page 1170
          up to +310°C for short periods. The temperatures prevailing                                                               shaft at +20°C, mounted in a steel housing.
          in the bearing system also have an influence on the wear.            Rotating Oscillating   linear
          The wear rises with increasing temperatures. At high   Long-term  m/s   1.5       1.1        5.0                             160                                                12.0
          temperatures iglidur  Z is also the most wear-resistant   Short-term  m/s  3.5    2.5        6.0                             140                                                10.0
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          material in dry operation. For temperatures over +145°C                                                                      120
          an additional securing is required.                Table 03: Maximum surface speeds                                          100                                                 8.0
          Application temperatures, page 53                                        Dry    Greases Oil  Water                            80                                                 6.0         Free cutting steel   Cf53, hard chromed  304 stainless steel
          Additional securing, page 53                                                                                                  60                                                 4.0    H.a. aluminium       HR carbon steel  High grade steel
                                                              Coefficient of friction μ 0.06-0.14  0.09  0.04  0.04                     40                                                 2.0              Cf53 steel
                                                             Table 04: Coefficient of friction against steel (Ra = 1μm,              Load [MPa]  20                                     Wear [µm/km]
          Friction and wear                                                                                                              0                                                 0.0
          The coefficient of friction declines just as the wear   50HRC)                                                                   20    50     80    120   150   200   250
          resistance with increasing load (diagrams 04 and 05).           Housing   Plain bearings   Shaft                            Temperature [°C]
          Coefficient of friction and surfaces, page 51       Ø d1 [mm]   H7 [mm]     F10 [mm]     h9 [mm]                          Diagram 02: Maximum recommended surface pressure as a   Diagram 06: Wear, rotating with different shaft materials,
          Wear resistance, page 54                                                                                                  function of temperature (150MPa at +20°C)          pressure, p = 1MPa, v = 0.3m/s
                                                              0-3       +0.000 +0.010 +0.006 +0.046 -0.025 +0.000
                                                              > 3-6     +0.000 +0.012 +0.010 +0.058 -0.030 +0.000
          Shaft materials                                     > 6-10    +0.000 +0.015 +0.013 +0.071 -0.036 +0.000                        8                                                 140
          Diagram 06 shows wear rates in the lower load range,   > 10-18  +0.000 +0.018 +0.016 +0.086 -0.043 +0.000                      7                                                 120        rotating
          which are very similar to those of other wear-resistant   > 18-30  +0.000 +0.021 +0.020 +0.104 -0.052 +0.000                   6                                                 100        oscillating
          iglidur  materials. However, in the upper load range   > 30-50  +0.000 +0.025 +0.025 +0.125 -0.062 +0.000                      5      +23 °C    +60 °C                           80
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          iglidur  Z outperforms all other materials in wear resistance.   > 50-80  +0.000 +0.030 +0.030 +0.150 -0.074 +0.000            4                                                 60
          Provided a Cf53 hardened and ground steel shaft is used,   > 80-120  +0.000 +0.035 -0.036 +0.176 -0.087 +0.000                 3                                                 40
                                                                                                                                         2
          the wear is still only 15µm/km at 45MPa. At low loads   > 120-180  +0.000 +0.040 +0.043 +0.203 +0.000 +0.100               Deformation [%]  1                                 Wear [µm/km]  20
          iglidur  Z plain bearings wear less in pivoting applica-                                                                       0                                                  0
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          tions than in rotating applications. 304 stainless steel and   Table 05: Important tolerances for plain bearings according       0       30     60     90      120    150            0  10  20  30  40  50  60  70  80  90  100
          hard-chromed shafts are of interest here.          to ISO 3547-1 after press-fit                                            Load [MPa]                                         Load [MPa]
          Shaft materials, page 56                                                                                                  Diagram 03: Deformation under pressure and temperature  Diagram 07: Wear for oscillating and rotating applications
                                                                                                                                                                                       with shaft material Cf53 hardened and ground steel, as a
          Installation tolerances                                                                                                                                                      function of the load
          iglidur  Z plain bearings are standard bearings for                                                                           0.4
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          shafts with h-tolerance (recommended minimum h9).
          The bearings are designed for press-fit into a housing                                                                        0.3
          machined to a H7 tolerance. After being assembled into a
          nominal size housing, in standard cases the inner diameter                                                                 Coefficient of friction [µ]  0.2
          automatically adjusts to the F10 tolerances. For particular
          dimensions the tolerance differs depending on the wall
          thickness (please see product range table).                                                                                   0.1
                                                                                                                                                 0.10
                                                                                                                                           0.05
          Testing methods, page 61                                                                                                    Surface speed [m/s]  0.15  0.20  0.25  0.30  0.35
                                                                                                                 ASEAN 09/2023   ASEAN 09/2023  Diagram 04: Coefficient of friction as a function of the

                                                                                                                                    surface speed, p = 0.75MPa

          304   3D-CAD, finder and service life calculation ... www.igus-asean.com/Z                                                                            Lubrication-free made easy ... from stock ... no minimum order quantity  305
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