Page 515 - IGUS Bearing
P. 515

iglidur  M260                                                                                                                                                                                                           iglidur  M260
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         +120°C                                                                                                                                                                                                                   +120°C
          40MPa                                                                                                                                                                                                                   40MPa
                      Bearing technology | Plain bearings | iglidur  M260                                                           Technical data
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                                                                                                                                    General properties                                                      Testing method

                                                                                                                                    Density                                            g/cm³        1.35                       -100 °C to
          Ø                                                                                                                         Colour                                                         black                       +120 °C
          20.0-60.0mm
                                                                                                                                    Max. moisture absorption at +23°C/50% r.h.       % weight       0.2       DIN 53495
                                                                                                                                    Max. moisture absorption                         % weight       0.4
                                                                                                                                    Coefficient of friction, dynamic, against steel      µ       0.08-0.16                     40MPa
                                                                                                                                    pv value, max. (dry)                             MPa · m/s      0.35
          Also available
          as:                                                                                                                       Mechanical properties
                      For heavy duty                                                                                                Flexural modulus                                    MPa        2,200      DIN 53457
                                                                                                                                                                                                              DIN 53452
                                                                                                                                                                                                    60
                                                                                                                                                                                        MPa
                                                                                                                                    Flexural strength at +20°C
                      Wear-resistant at medium temperatures and loads                                                               Compressive strength                                MPa         50
          Bar stock,                                                                                                                Max. permissible surface pressure (+20°C)           MPa         40
          round bar
          Page 743                                                                                                                  Shore D hardness                                                77        DIN 53505
                      iglidur  M260 was specially developed for the application in harsh environments. Special attention was
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                      paid during development to ensure the material can be used for injection-moulded thick-walled bearings.       Physical and thermal properties
                      Therefore iglidur  M260 is well-suited for applications in which thick-walled bearings are used or replaced,   Max. application temperature long-term              °C        +120                         FOOD
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                      which are at the same robust.                                                                                 Max. application temperature short-term              °C        +140
                      ● 	Excellent coefficient of friction                                                                          Min. application temperature                         °C      up to -100
          Bar stock,   ● 	Low moisture absorption                                                                                   Thermal conductivity                              W/m · K       0.24      ASTM C 177
          plate                                                                                                                                                                        -1   -5
          Page 773                                                                                                                  Coefficient of thermal expansion (at +23°C)       K  · 10       13        DIN 53752
                      Typical application areas                                                                                     Electrical properties
                      ● 	Automation                                                                                                 Specific transitional resistance                    Ωcm         n.s.
                      ● 	Plant construction                                                                                         Surface resistance                                   Ω         > 10 10    DIN 53482
                      ● 	Test engineering and quality assurance                                                                     Table 01: Material properties
          tribo-tape liner  ● 	Robotics industry
          Page 781    ● 	Electronics industry                                                                                       Similar to the classic, iglidur  J, iglidur  M260 is an   Resistance to weathering
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                                                                                                                                    endurance runner with outstanding wear behaviour, but   iglidur  M260 plain bearings are continuously resistant
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                                                                                                                                    provides increased reserves at its long-term application   to weathering. The material properties are only slightly
                                                                                                                                    temperature of +120°C.                             affected. Possible discolourations are only superficial.

                                                                                                                                    Moisture absorption                                Mechanical properties
          Guide rings
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          Page 641                                                                                                                  The moisture absorption of iglidur  M260 plain bearings   With increasing temperatures, the compressive strength of
                                                                                                                                    in ambient conditions is approximately 0.2% weight. The   iglidur  M260 plain bearings decreases. Diagram 02 shows
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                       Descriptive technical specifications                                                                         saturation limit submerged in water is 0.4% weight. These   this inverse relationship. The maximum recommended
                       Wear resistance at +23°C                     –                       +                                       values are so low that a moisture expansion need to be   surface pressure is a mechanical material parameter. No
                                                                                                                                    considered only in extreme cases.                  conclusions regarding the tribological properties can be
                       Wear resistance at +90°C                     –                       +
                                                                                                                                                                                       drawn from this.
          Two hole     Wear resistance at +150°C                    –                       +                                       Vacuum                                             Diagram 03 shows the elastic deformation of iglidur  M260
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          flange
          bearings                                                                                                                  In vacuum, any present moisture is released as vapour. Use   as a function of radial pressure. At the recommended
          Page 667     Slide property                               –                       +
                                                                                                                                    in vacuum is only possible with dehumidified iglidur  M260   maximum surface pressure of 40MPa the deformation is
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                       Wear resistance under water                  –                       +                                       bearings.                                          less than 2.5% at room temperature. A possible deformation
                                                                                                                                                                                       could be, among others, dependant on the duty cycle
                       Media resistance                             –                       +
                                                                                                                                    Radiation resistance                               of the load.
          Moulded      Resistant to edge pressures                  –                       +                                       They are resistant up to a radiation intensity of 3 · 10² Gy.  Surface pressure, page 45
          special parts
          Page 696     Resistant to shock and impact loads          –                       +

                       Dirt resistance                              –                       +




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