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iglidur  W300                                                                                                                                                                                                           iglidur  W300
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          +90°C                                                                                                                                                                                                                   +90°C
          60MPa                                                                                                                                                                                                                   60MPa
                      Bearing technology | Plain bearings | iglidur  W300                                                           Technical data
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                                                                                                                                    General properties                                                      Testing method

                                                                                                                                    Density                                            g/cm³        1.24                       -40°C up to
          Ø                                                                                                                         Colour                                                         yellow                      +90°C
          2.0-120.0mm
                                                                                                                                    Max. moisture absorption at +23°C/50% r.h.       % weight       1.3       DIN 53495
                                                                                                                                    Max. moisture absorption                         % weight       6.5
                                                                                                                                    Coefficient of friction, dynamic, against steel      µ       0.08 -0.23                    60MPa
                                                                                                                                    pv value, max. (dry)                             MPa · m/s      0.23
          Also available
          as:                                                                                                                       Mechanical properties
                      The classic endurance runner up to 30MPa                                                                      Flexural modulus                                    MPa        3,500      DIN 53457
                                                                                                                                                                                                    125
                                                                                                                                                                                                              DIN 53452
                                                                                                                                    Flexural strength at +20°C
                                                                                                                                                                                        MPa
                      Excellent wear resistance on (virtually) all shafts                                                           Compressive strength                                MPa         61
          Bar stock,                                                                                                                Max. permissible surface pressure (+20°C)           MPa         60
          round bar
          Page 743                                                                                                                  Shore D hardness                                                77        DIN 53505
                      iglidur  W300 gives excellent wear resistance, even in harsh environments or when used with rough shafts.
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                      Of all iglidur  materials, iglidur  W300 is the most resistant to these conditions.                           Physical and thermal properties
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                      ● 	Over 400 sizes available from stock                                                                        Max. application temperature long-term               °C         +90                         FOOD
                      ● 	Very long service life                                                                                     Max. application temperature short-term              °C        +180
                      ● 	Low coefficient of friction                                                                                Min. application temperature                         °C         -40
          Bar stock,   ● 	Low coefficient of friction                                                                               Thermal conductivity                              W/m · K       0.24      ASTM C 177
          plate                                                                                                                                                                        -1   -5
          Page 773    ● 	Very wear-resistant                                                                                        Coefficient of thermal expansion (at +23°C)       K  · 10        9        DIN 53752
                      ● 	Suitable for applications with soft shafts                                                                 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
          tribo-tape liner  Typical application areas
          Page 781    ● 	Automation                                                                                                 iglidur  W300 gives excellent wear resistance, even in   Resistance to weathering
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                      ● 	Printing industry                                                                                          harsh environments or when used with rough shafts. This   iglidur  W300 plain bearings have limited resistance
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                      ● 	Woodworking                                                                                                material is the most tolerant of these external effects out   to weathering. The material properties are affected.
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                      ● 	Mechatronics                                                                                               of all the iglidur  range.                         Discolouration occurs. Practical tests under real application
                      ● 	Test engineering and quality assurance                                                                                                                        conditions are recommended.
                                                                                                                                    Moisture absorption
          Guide rings
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          Page 641                                                                                                                  The moisture absorption of iglidur  W300 plain bearings   Mechanical properties
                                                                                                                                    in ambient conditions is approximately 1.3% weight. The   When temperatures increase, the compressive strength of
                       Descriptive technical specifications                                                                         saturation limit submerged in water is 6.5% weight. This   iglidur  W300 plain bearings decreases. Diagram 02 shows
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                       Wear resistance at +23°C                     –                       +                                       must be taken into account for these types of applications.  this inverse relationship. The maximum recommended
                                                                                                                                                                                       surface pressure is a mechanical material parameter. No
                       Wear resistance at +90°C                     –                       +
                                                                                                                                    Vacuum                                             conclusions regarding the tribological properties can be
          Two hole     Wear resistance at +150°C                    –                       +                                       In vacuum, any present moisture is released as vapour.   drawn from this.
          flange
          bearings                                                                                                                  The use in vacuum is only possible to a limited extent.  iglidur  W300 shows a very high compressive strength
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          Page 667     Slide property                               –                       +
                                                                                                                                                                                       despite high elasticity. Diagram 03 shows the elastic
                       Wear resistance under water                  –                       +                                       Radiation resistance                               deformation of iglidur  W300 at radial loads. At the
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                                                                                                                                    Plain bearings made from iglidur  W300 are resistant up   maximum recommended surface pressure of 60MPa,
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                       Media resistance                             –                       +
                                                                                                                                    to a radiation intensity of 3 · 10² Gy.            the deformation is less than 3%.
          Moulded      Resistant to edge pressures                  –                       +                                                                                          Surface pressure, page 45
          special parts
          Page 696     Resistant to shock and impact loads          –                       +
                       Dirt resistance                              –                       +




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          176   3D-CAD, finder and service life calculation ... www.igus-asean.com/W300                                                                         Lubrication-free made easy ... from stock ... no minimum order quantity   177
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