Page 604 - IGUS Bearing
P. 604

iglidur  J2                                                                                                                                                                                                              iglidur  J2
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          +90°C                                                                                                                                                                                                                   +90°C
          46MPa                                                                                                                                                                                                                   46MPa
                      Bearing technology | Plain bearings | iglidur  J2                                                             Technical data
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                                                                                                                                      General properties                                                    Testing method

                                                                                                                                    Density                                            g/cm³        1.44                       -50°C up to
          Ø                                                                                                                         Colour                                                       light yellow                  +90°C
          6.0-25.0mm
                                                                                                                                    Max. moisture absorption at +23°C/50% r.h.       % weight       0.2       DIN 53495
                                                                                                                                    Max. moisture absorption                         % weight       1.3
                                                                                                                                    Coefficient of friction, dynamic, against steel      µ       0.11-0.27                     46MPa
                                                                                                                                    pv value, max. (dry)                             MPa · m/s      0.23
          Also available
          as:                                                                                                                       Mechanical properties
                      Versatile and cost-effective                                                                                  Flexural modulus                                    MPa        3,605      DIN 53457
                                                                                                                                                                                        MPa
                                                                                                                                    Flexural strength at +20°C
                                                                                                                                                                                                              DIN 53452
                                                                                                                                                                                                    101
                      For applications with infrequent movement or                                                                  Compressive strength                                MPa         77
          Bar stock,                                                                                                                Max. permissible surface pressure (+20°C)           MPa         46
          round bar   continuous lubrication
          Page 743                                                                                                                  Shore D hardness                                                74        DIN 53505
                                                                                                                                    Physical and thermal properties
                      iglidur  J2 has good universal media resistance, comparable to that of iglidur  J and similar materials.      Max. application temperature long-term               °C         +90
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                      The mechanical specifications in sporadically moving applications are better, but in comparison there are     Max. application temperature short-term              °C        +110                         FOOD
                      significant reductions in friction and wear. Like all iglidur  materials, iglidur  J2 is PFOA-free.           Min. application temperature                         °C         -50
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          Bar stock,   ● 	Robust                                                                                                    Thermal conductivity                              W/m · K       0.25      ASTM C 177
          plate       ● 	Cost-effective                                                                                                                                                -1   -5
          Page 773                                                                                                                  Coefficient of thermal expansion (at +23°C)       K  · 10        7        DIN 53752
                      ● 	High media resistance                                                                                      Electrical properties
                      ● 	Lubrication-free                                                                                           Specific transitional resistance                    Ωcm        > 10 13    DIN IEC 93
                      ● 	Maintenance-free                                                                                           Surface resistance                                   Ω         > 10 12    DIN 53482
                                                                                                                                    Table 01: Material properties
                      Typical application areas
          tribo-tape liner
          Page 781    ● 	Jig construction                                                                                           With respect to its general mechanical and thermal   Resistance to weathering
                      ● 	Industrial handling
                                                                                                                                    specifications, iglidur  J2 is directly comparable to our   iglidur  J2 plain bearings have limited resistance to
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                                                                                                                                    classic, iglidur  J. Therefore the iglidur  J2 is superior to   weathering. The material properties are affected.
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                                                                                                                                    iglidur  J with respect to the mechanical properties, such   Discolouration occurs. Practical tests under real application
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                                                                                                                                    as maximum recommended surface pressure. However,   conditions are recommended.
                                                                                                                                    wear resistance is reduced in dry operation.
          Guide rings
          Page 641                                                                                                                                                                     Mechanical properties
                                                                                                                                    Moisture absorption                                With increasing temperatures, the compressive strength
                       Descriptive technical specifications                                                                         The moisture absorption of iglidur  J2 plain bearings in   of iglidur  J2 plain bearings decreases. Diagram 02 shows
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                       Wear resistance at +23°C                     –                       +                                       ambient conditions is approximately 0.2% weight. The   this inverse relationship. The maximum recommended
                                                                                                                                    saturation limit submerged in water is 1.3% weight. These   surface pressure is a mechanical material parameter. No
                       Wear resistance at +90°C                     –                       +
                                                                                                                                    values are so low that a moisture expansion need to be   conclusions regarding the tribological properties can be
          Two hole     Wear resistance at +150°C                    –                       +                                       considered only in extreme cases.                  drawn from this.
          flange
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          bearings                                                                                                                                                                     Diagram 03 shows the elastic deformation of iglidur  J2
          Page 667     Slide property                               –                       +
                                                                                                                                    Vacuum                                             at radial loads. A possible deformation could be, among
                       Wear resistance under water                  –                       +                                       In vacuum, any present moisture is released as vapour. Use   others, dependant on the duty cycle of the load.
                                                                                                                                    in vacuum is only possible with dehumidified iglidur  J2    Surface pressure, page 45
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                       Media resistance                             –                       +
                                                                                                                                    bearings.
          Moulded      Resistant to edge pressures                  –                       +
          special parts                                                                                                             Radiation resistance
          Page 696     Resistant to shock and impact loads          –                       +
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                                                                                                                                    Plain bearings made from iglidur  J2 are resistant up to a
                       Dirt resistance                              –                       +                                       radiation intensity of 3 · 10² Gy.




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