Change Language :

iglidur® A180 - material data

Table of contents

    The most important specifications at a glance

    Plain bearings made from iglidur A180 are suitable for application in direct contact with food. They are the ideal solution for bearing points on machines for the food and packaging industry, medical equipment manufacturing, small household appliances, etc. Even where wet cleaning contact occurs, the iglidur A180 is characterised by the lowest moisture absorption.

    Descriptive technical specifications
    Wear resistance at +23°C- 🟧 🟧 🟧 ⬜️ ⬜️ +More information on wear resistance
    Wear resistance at +90°C- 🟧 ⬜️ ⬜️ ⬜️ ⬜️ +
    Wear resistance at +150°C- 🟧 ⬜️ ⬜️ ⬜️ ⬜️ +
    Sliding properties- 🟧 🟧 🟧 ⬜️ ⬜️ +Coefficient of friction, dynamic, against steel: µ 0.05 - 0.23
    Wear resistance under water- 🟧 🟧 ⬜️ ⬜️ ⬜️ +
    Media resistance- 🟧 🟧 🟧 🟧 ⬜️ +More information on media resistance
    Resistant to edge pressures- 🟧 🟧 🟧 🟧 ⬜️ +
    Resistant to shock and impact loads- 🟧 🟧 🟧 🟧 ⬜️ +
    Dirt resistance- 🟧 🟧 🟧 🟧 ⬜️ +

    When do I use this material?

    • When my bearings come into direct contact with food
    • When FDA conformity is required
    • When quiet operation is important
    • When low moisture absorption is required

    When do I use a different material?

    Material data table

    General properties Unit iglidur® A180 Testing method
    Densityg/cm³ 1.46
    Colour white
    Max. moisture absorption at +23°C/50% room humidity % weight 0.2DIN 53495
    Max. moisture absorption % weight 1.3
    Coefficient of sliding friction, dynamic against steel µ0.05 - 0.23
    pv value, max. (dry) MPa x m/s 0.31
    Mechanical properties
    Flexural modulus MPa 2,300DIN 53457
    Flexural strength at 20°C MPa 88DIN 53452
    Compressive strength MPa 78
    Maximum recommended surface pressure (20°C) MPa 28
    Shore D hardness 76 DIN 53505
    Physical and thermal properties
    Max. long-term application temperature °C +90
    Max. short-term application temperature °C +110
    min. application temperature °C -50
    Thermal conductivity [W/m x K] 0.25 ASTM C 177
    Coefficient of thermal expansion (at 23°C) [K-1 x 10-5 11 DIN 53752
    Electrical properties
    Specific transitional resistance Ωcm > 1012DIN IEC 93
    Surface resistance Ω> 1011DIN 53482

    Temperatures

    The upper short-term application temperature is +110°C. The compressive strength of iglidur A180 plain bearings decreases with increasing temperatures. The temperatures prevailing in the bearing system also have an influence on bearing wear. Additional protection is required at temperatures higher than +60°C.

    Temperatures, coefficient of thermal expansion

    iglidur A180 Application temperature
    Minimum -50°C
    Max. long-term +90°C
    Maximum, short-term +110°C
    In addition secure axially from +60°C

    Permissible surface speeds

    iglidur A180 has been developed for low surface speeds. In dry operation, a maximum of 0.8m/s (rotating) or 3.5m/s (linear) is permitted for continuous use. The values given in the table indicate the limits at which frictional heat causes an increase up to the permanently permissible temperature. In practice, these limit values cannot always be achieved due to interactions.

    Surface speeds of various iglidur materials

    Maximum surface speeds [m/s]Rotating Oscillating linear
    permanent 0.80.6 3.5
    Short-term 1.2 1.05.0

    Permissible pv values

    Diagram 01: Permissible pv values for iglidur® A180 plain bearings
    Diagram 01: Permissible pv values for iglidur® A180 plain bearings

    Diagram 01: Permitted pv values for iglidur A180 plain bearings with 1mm wall thickness in dry operation against a steel shaft, at +20°C, installed in a steel housing

    X = surface speed [m/s]
    Y = pressure [MPa]

    pv value, max. (dry)

    MPa - m/s

    0,31

    Information on pv value and lubrication

    Mechanical specifications

    The maximum recommended surface pressure is a mechanical material parameter. Conclusions about the tribology cannot be drawn from this. The compressive strength of iglidur A180 plain bearings decreases with increasing temperatures. Diagram 02 illustrates this relationship. Diagram 03 shows the elastic deformation of iglidur A180 under radial load. Under the maximum recommended surface pressure of 20MPa, the deformation is less than 2.5%. Plastic deformation can be neglected up to this radial load. However, it also depends on the duration of the impact.

    Diagram 02: Maximum recommended surface pressure as a function of temperature (20MPa at +20°C)

    X = temperature [°C]
    Y = pressure [MPa]

    Diagram 03: Deformation under load and temperatures

    X = load [MPa]
    Y = deformation [%]

    Friction and wear

    Coefficient of friction and wear resistance change with the application parameters. However, the coefficient of friction decreases significantly with increasing load (diagrams 04 and 05).

    Coefficients of friction for iglidur A180 against steel (Ra = 1μm, 50 HRC):

    iglidur A180 dry Greases Oil Water
    Coefficient of friction µ 0.05 - 0.23 0.09 0.04 0.04

    Diagram 04: Coefficient of friction as a function of the surface speed, p = 0.75MPa

    X = surface speed [m/s]
    Y = coefficient of friction μ

    Diagram 05: Coefficients of friction as a function of the load, v = 0.01m/s

    X = load [MPa]
    Y = coefficient of friction μ

    Shaft materials

    Diagram 06 shows test results with different shaft materials, which were carried out with plain bearings made from iglidur A180. The combination "iglidur A180/hard anodised aluminium shaft" clearly stands out. However, good to very good wear rates are also achieved on other shafts. Cf53 shafts are an example of the higher wear in swivelling applications compared to rotation (diagram 07).

    Further information on shaft materials

    Diagram 06: Wear, rotating application with different shaft materials, p = 1MPa, v = 0.3m/s

    X = shaft material
    Y = wear [μm/km]

    A = aluminium, hard-anodised
    B = free cutting steel
    C = Cf53
    D = Cf53, hard-chromed
    E = HR carbon steel
    F = 304 SS
    G = high grade steel

    Diagram 07: Wear in oscillating and rotating applications with Cf53 as a function of pressure

    X = pressure [MPa]
    Y = wear [μm/km]

    A = rotating
    B = oscillating

    Chemical resistance

    iglidur A180 plain bearings can be used under a wide range of environmental conditions and in contact with numerous chemicals. The table provides an overview of the chemical resistance of iglidur A180 plain bearings at room temperature.

    + resistant      0 conditionally resistant      - non-resistant
    All data at room temperature [+20 °C]

    Medium Resistance
    Alcohols+
    Hydrocarbons+
    Greases, oils without additives +
    Fuels +
    Diluted acids 0 to -
    Strong acids -
    Diluted alkalines +
    Strong alkalines + up to 0

    Moisture absorption

    Diagram 10: Influence of moisture absorption

    X = moisture absorption [Gew.-%]
    Y = reduction of inner ø [%]

    The iglidur A180 plain bearing absorbs up to 0.2% water when exposed to humidity (+23°C, 50% relative humidity), and up to 1.3% when saturated with water.

    Maximum moisture absorption
    at +23°C/50% r. humidity 0.2% weight
    Max. moisture absorption 1.3% weight

    Electrical properties

    iglidur A180 plain bearings are electrically insulating.

    Electrical properties
    Specific transitional resistance > 1012 Ωcm
    Surface resistance > 1011 Ω

    Installation tolerances

    iglidur A180 plain bearings are standard bearings for shafts with h-tolerance (recommended minimum h9). The bearings are designed for press-fit into a housing machined to a H7 tolerance. After being assembled into a nominal size housing, the inner diameter automatically adjusts to the E10 tolerances.

    Diameter d1 [mm]Shaft h9 [mm]iglidur A180 F10 [mm]Housing H7 [mm]
    up to 30 - 0.025 +0.014 +0.054 0 +0.010
    > 3 up to 6 0 - 0.030 +0.020 +0.068 0 +0.012
    > 6 up to 10 0 - 0.036 +0.025 +0.083 0 +0.015
    > 10 up to 18 0 - 0.043 +0.032 +0.102 0 +0.018
    > 18 up to 30 0 - 0.052 +0.040 +0.124 0 +0.021
    > 30 up to 50 0 - 0.062 +0.050 +0.150 0 +0.025
    >50 to 80 0 - 0.074 +0.060 +0.180 0 +0.030
    >80 to 1200 - 0.087 +0.072 +0.2120 +0.035
    > 120 up to 1800 - 0.100 +0.085 +0.2450 +0.040

    Thermal conductivity

    [W/m · K] 0.25

    ASTM C 177

    Coefficient of thermal expansion

    (at +23°C) [K-1 · 10-5] 11

    DIN 53752

    UV resistance

    iglidur A180 plain bearings are resistant to UV radiation, but the tribological specifications deteriorate due to permanent exposure.

    Compressive strength

    78MPa

    Vacuum

    Any moisture present will degas in a vacuum. Use in a vacuum is only possible for dry bearing made of iglidur A180.

    Radioactive radiation

    Plain bearings made of iglidur A180 are resistant to radiation up to a radiation intensity of 3 · 102 Gy.

    Free sample box

    ✓ including iglidur A180 plain bearings

    ✓ 38 plastic bearings made from the most important iglidur materials

    ✓ Templates to find the perfect material for your application

    ✓ iglidur bearing technology catalogue

    Request a free sample box now

    Buy iglidur A180 products in the online shop

    • Large selection of moulds and materials
    • Available within 24 hours
    • No minimum order value
    • No minimum order quantity
    Go to igus online shop

    Typical application areas

    Food industry

    Learn more

    Beverage technology

    Learn more

    Medical technology

    Learn more

    Consulting

    I look forward to answering your questions

    J. & E. Papadopoulos S.A.+30 210 4113133Write e-mail

    Shipping and consultation

    In person:

    Monday to Friday from 7 am - 17 pm.
    Saturdays from 8 am- 12 pm.


    Online:
    24h

    WhatsApp-Service:
    Montag – Freitag: 8 – 16 Uhr