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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