Page 480 - IGUS Bearing
P. 480

iglidur  Q2                                                                                                                                                                                                              iglidur  Q2
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             ®
         +130°C                                                                                                                                                                                                                   +130°C
         120MPa                                                                                                                                                                                                                   120MPa
                      Bearing technology | Plain bearings | iglidur  Q2                                                             Technical data
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                                                                                                                                      General properties                                                    Testing method

                                                                                                                                    Density                                            g/cm³        1.46                       -40°C up to
          Ø                                                                                                                         Colour                                                      beige-brown                    +130°C
          4.0-120.0mm
                                                                                                                                    Max. moisture absorption at +23°C/50% r.h.       % weight       1.1       DIN 53495
                                                                                                                                    Max. moisture absorption                         % weight       4.6
                                                                                                                                    Coefficient of friction, dynamic, against steel      µ       0.22-0.42                     120MPa
                                                                                                                                    pv value, max. (dry)                             MPa · m/s      0.70
          Also available
          as:                                                                                                                       Mechanical properties
                      The durable heavy-duty bearing                                                                                Flexural modulus                                    MPa        8,370      DIN 53457
                                                                                                                                    Flexural strength at +20°C
                                                                                                                                                                                                    240
                                                                                                                                                                                                              DIN 53452
                                                                                                                                                                                        MPa
                      Combined wear resistance and compressive                                                                      Compressive strength                                MPa         130
          Bar stock,                                                                                                                Max. permissible surface pressure (+20°C)           MPa         120
          round bar   strength at high loads
          Page 743                                                                                                                  Shore D hardness                                                80        DIN 53505
                                                                                                                                    Physical and thermal properties
                      Where previous iglidur  bearing solutions are limited within the scope of extreme loads and strong impact     Max. application temperature long-term               °C        +130
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                      forces, the iglidur  Q2 starts. Made for heavy-duty pivoting applications under extreme conditions.           Max. application temperature short-term              °C        +200                         FOOD
                                    ®
                      ● 	Wear-resistant                                                                                             Min. application temperature                         °C         -40
          Bar stock,   ● 	Good price-performance ratio                                                                              Thermal conductivity                              W/m · K       0.24      ASTM C 177
          plate       ● 	Lubrication-free                                                                                                                                              -1   -5
          Page 773                                                                                                                  Coefficient of thermal expansion (at +23°C)       K  · 10        8        DIN 53752
                      ● 	Maintenance-free                                                                                           Electrical properties
                      ● 	High rigidity                                                                                              Specific transitional resistance                    Ωcm        > 10 13    DIN IEC 93
                      ● 	Suitable for high loads                                                                                    Surface resistance                                   Ω         > 10 11    DIN 53482
                                                                                                                                    Table 01: Material properties
                      Typical application areas
          tribo-tape liner
          Page 781    ● 	Agricultural engineering                                                                                   iglidur  Q2 plain bearings represent high load capacities    Resistance to weathering
                                                                                                                                         ®
                      ● 	Utility and construction vehicles                                                                          and good abrasion resistance at high loads. The price-   iglidur  Q2 plain bearings are continuously resistant
                                                                                                                                                                                            ®
                      ● 	Mechanical engineering
                                                                                                                                    performance ratio is outstanding. Solid lubricants reduce   to weathering. The material properties are only slightly
                                                                                                                                    the coefficient of friction and improve the resistance to   affected. Possible discolourations are only superficial.
                                                                                                                                    wear, which was markedly improved as compared to other
                                                                                                                                    iglidur  plain bearings, especially for heavily loaded pivoting   Mechanical properties
                                                                                                                                         ®
          Guide rings
          Page 641                                                                                                                  applications.                                      With increasing temperatures, the compressive strength of
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                                                                                                                                                                                       iglidur  Q2 plain bearings decreases. Diagram 02 shows
                       Descriptive technical specifications                                                                         Moisture absorption                                this inverse relationship. With the long-term permitted
                       Wear resistance at +23°C                     –                       +                                       The moisture absorption of iglidur  Q2 plain bearings in   application temperature of +130°C, the permitted
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                                                                                                                                    ambient conditions is approximately 1.1% weight. The   surface pressure still amounts to 20MPa. The maximum
                       Wear resistance at +90°C                     –                       +
                                                                                                                                    saturation limit submerged in water is 4.6% weight. This   recommended surface pressure is a mechanical material
          Two hole     Wear resistance at +150°C                    –                       +                                       must be taken into account for these types of applications.  parameter. No conclusions regarding the tribological
          flange
          bearings                                                                                                                                                                     properties can be drawn from this.
          Page 667     Slide property                               –                       +
                                                                                                                                    Vacuum                                             Diagram 03 shows the elastic deformation of iglidur  Q2
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                       Wear resistance under water                  –                       +                                       In vacuum, any present moisture is released as vapour.   at radial loads.
                                                                                                                                    The use in vacuum is only possible to a limited extent.  Surface pressure, page 45
                       Media resistance                             –                       +

          Moulded      Resistant to edge pressures                  –                       +                                       Radiation resistance
          special parts                                                                                                             Plain bearings made from iglidur  Q2 are resistant up to a
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          Page 696     Resistant to shock and impact loads          –                       +
                                                                                                                                    radiation intensity of 3 · 10² Gy.
                       Dirt resistance                              –                       +




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