Page 463 - IGUS Bearing

iglidur T220 iglidur T220
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+100°C +100°C
40MPa 40MPa
Bearing technology | Plain bearings | iglidur T220 Technical data
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General properties Testing method

Density g/cm³ 1.28 -40°C up to
Ø Colour white +100°C
–
Max. moisture absorption at +23°C/50% r.h. % weight 0.3 DIN 53495
Max. moisture absorption % weight 0.5
Coefficient of friction, dynamic, against steel µ 0.20-0.32 40MPa
pv value, max. (dry) MPa · m/s 0.28
Also available
as: Mechanical properties
For the tobacco industry Flexural modulus MPa 1,800 DIN 53457
65
DIN 53452
Flexural strength at +20°C
MPa
FDA-compliant Compressive strength MPa 55
Bar stock, Max. permissible surface pressure (+20°C) MPa 40
round bar
Page 743 Shore D hardness 76 DIN 53505
Plain bearings that constitute only materials "recommended" for the tobacco industry. They are free from
carcinogenic additives like, for instance, PTFE. Physical and thermal properties
● Free from banned ingredients as requested by main manufacturers of tobacco products Max. application temperature long-term °C +100 FOOD
● FDA-compliant Max. application temperature short-term °C +160
● Lubrication-free Min. application temperature °C -40
Bar stock, ● Maintenance-free Thermal conductivity W/m · K 0.24 ASTM C 177
plate -1 -5
Page 773 Coefficient of thermal expansion (at +23°C) K · 10 11 DIN 53752
Typical application areas Electrical properties
● Tobacco industry Specific transitional resistance Ωcm > 10 10 DIN IEC 93
Surface resistance Ω > 10 10 DIN 53482
Table 01: Material properties
tribo-tape liner
Page 781 iglidur T220 is a special material for applications in the Resistance to weathering
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tobacco processing industry. It fulfils the demands of the iglidur T220 plain bearings are resistant to weathering.
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tobacco industry (engineering database). The material is The material properties are slightly affected. Discolouration
free of undesirable or banned ingredients, as requested occurs.
by reputed manufacturers from 2004 onward.
Mechanical properties
Guide rings
Page 641 Moisture absorption With increasing temperatures, the compressive strength of
The humidity absorption of iglidur T220 bearings amounts iglidur T220 plain bearings decreases. Diagram 02 shows
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Descriptive technical specifications to about 0.3% weight in standard climatic conditions. this inverse relationship. The maximum recommended
Wear resistance at +23°C – + The saturation limit submerged in water is 0.5% weight. surface pressure is a mechanical material parameter. No
These values are so low that consideration of expansion conclusions regarding the tribological properties can be
Wear resistance at +90°C – +
by moisture absorption is only required under extreme drawn from this.
Two hole Wear resistance at +150°C – + circumstances. iglidur T220 plain bearings can be stressed up to the
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flange
bearings permitted limit of 40MPa, the elastic deformation is less
Page 667 Slide property – +
Vacuum than 2% at room temperature. The permitted load is limited
Wear resistance under water – + In vacuum, any present moisture is released as vapour. Use by higher temperatures (diagram 03).
in vacuum is only possible with dehumidified iglidur T220 Surface pressure, page 45
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Media resistance – +
bearings.
Moulded Resistant to edge pressures – +
special parts Radiation resistance
Page 696 Resistant to shock and impact loads – +
Plain bearings made from iglidur T220 are resistant up to
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Dirt resistance – + a radiation intensity of 3 · 10² Gy.

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igubal Online product finder Online service life calculation
spherical balls
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460 3D-CAD, finder and service life calculation ... www.igus-asean.com/T220 Lubrication-free made easy ... from stock ... no minimum order quantity 461