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iglidur  A181                                                                                                                                                                                                            iglidur  A181
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          +90°C                                                                                                                                                                                                                   +90°C
          31MPa                                                                                                                                                                                                                   31MPa
                      Bearing technology | Plain bearings | iglidur  A181                                                           Technical data
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                                                                                                                                    General properties                                                      Testing method

                                                                                                                                    Density                                            g/cm³        1.38                       -50°C up to
          Ø                                                                                                                         Colour                                                          blue                       +90°C
          4.0-50.0mm
                                                                                                                                    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       0.10-0.21                     31MPa
                                                                                                                                    pv value, max. (dry)                             MPa · m/s      0.31
          Also available
          as:                                                                                                                       Mechanical properties
                      The universal bearing for food contact                                                                        Flexural modulus                                    MPa        1,913      DIN 53457
                                                                                                                                    Flexural strength at +20°C
                                                                                                                                                                                        MPa
                                                                                                                                                                                                    48
                                                                                                                                                                                                              DIN 53452
                      Compliant with Regulation (EU) No. 10/2011                                                                    Compressive strength                                MPa         60
          Bar stock,                                                                                                                Max. permissible surface pressure (+20°C)           MPa         31
          round bar   and FDA guidelines
          Page 743                                                                                                                  Shore D hardness                                                76        DIN 53505
                                                                                                                                    Physical and thermal properties
                      The iglidur  A181 material is compliant with Regulation (EU) No. 10/2011 and also with FDA specifications.    Max. application temperature long-term               °C         +90
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                      The blue colour also facilitates the "optical detectability" often desired in the food sector.                Max. application temperature short-term              °C        +110                         FOOD
                      ● 	Compliant with Regulation (EU) No. 10/2011                                                                 Min. application temperature                         °C         -50
          Bar stock,   ● 	FDA-compliant                                                                                             Thermal conductivity                              W/m · K       0.25      ASTM C 177
          plate       ● 	Universal installation                                                                                                                                        -1   -5
          Page 773                                                                                                                  Coefficient of thermal expansion (at +23°C)       K  · 10       11        DIN 53752
                      ● 	High media resistance                                                                                      Electrical properties
                      ● 	Wear-resistant                                                                                             Specific transitional resistance                    Ωcm        > 10 12    DIN IEC 93
                      ● 	Lubrication-free                                                                                           Surface resistance                                   Ω         > 10 12    DIN 53482
                      ● 	Maintenance-free
                                                                                                                                    Table 01: Material properties
          tribo-tape liner
          Page 781    Typical application areas                                                                                     Due to their technical specifications and their conformity   Resistance to weathering
                      ● 	Food industry                                                                                              with the relevant regulations, iglidur  A181 plain bearings   iglidur  A181 plain bearings are resistant to weathering.
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                      ● 	Beverage technology                                                                                        are predestined for applications in food technology.   The material properties are slightly affected. Discolouration
                      ● 	Medical technology
                                                                                                                                    Compared to iglidur  A180 with regard to the mechanical   occurs.
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                                                                                                                                    properties, temperature and media resistance, iglidur  A181
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                                                                                                                                    is more suitable with respect to the wear resistance in   Mechanical properties
          Guide rings
          Page 641                                                                                                                  most cases.                                        With increasing temperatures, the compressive strength of
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                                                                                                                                                                                       iglidur  A181 plain bearings decreases. Diagram 02 shows
                       Descriptive technical specifications                                                                         Moisture absorption                                this inverse relationship. The maximum recommended
                       Wear resistance at +23°C                     –                       +                                       The moisture absorption of iglidur  A181 plain bearings is   surface pressure is a mechanical material parameter. No
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                                                                                                                                    approximately 0.2 % weight in standard climatic conditions.   conclusions regarding the tribological properties can be
                       Wear resistance at +90°C                     –                       +
                                                                                                                                    The saturation limit submerged in water is 1.3% weight.   drawn from this.
          Two hole     Wear resistance at +150°C                    –                       +                                       This must be taken into account for these types of    Diagram 03 shows the elastic deformation of iglidur  A181
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          flange
          bearings                                                                                                                  applications.                                      at radial loads.
          Page 667     Slide property                               –                       +
                                                                                                                                                                                       Surface pressure, page 45
                       Wear resistance under water                  –                       +                                       Vacuum
                                                                                                                                    In vacuum, any present moisture is released as vapour. Use   Permissible surface speeds
                       Media resistance                             –                       +
                                                                                                                                    in vacuum is only possible with dehumidified iglidur  A181    iglidur  A181 was developed for low surface speeds.
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          Moulded      Resistant to edge pressures                  –                       +                                       bearings.                                          Maximum speeds of up to 0.8m/s (rotating) and 3.5m/s
          special parts                                                                                                                                                                (linear), respectively, are permissible during continuous dry
          Page 696     Resistant to shock and impact loads          –                       +
                                                                                                                                    Radiation resistance                               operation. The given values in table 03 indicate the limits
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                       Dirt resistance                              –                       +                                       Plain bearings made from iglidur  A181 are resistant up to   at which an increase up to the continuous permissible
                                                                                                                                    a radiation intensity of 2 · 10² Gy.               temperature occurs. This increase is a result of friction. In
                                                                                                                                                                                       practice, though, this level is rarely reached, due to varying

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          igubal            Online product finder                         Online service life calculation                                                                              application conditions.
          spherical balls                                                                                                                                                              Surface speed, page 48
          Page 993          www.igus-asean.com/iglidur-finder             www.igus-asean.com/iglidur-expert      ASEAN 09/2023   ASEAN 09/2023
          402   3D-CAD, finder and service life calculation ... www.igus-asean.com/A181                                                                         Lubrication-free made easy ... from stock ... no minimum order quantity   403
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