Page 581 - IGUS Bearing

iglidur J UV iglidur J UV
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+90°C +90°C
35MPa 35MPa
Bearing technology | Plain bearings | iglidur J UV Technical data
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General properties Testing method

Density g/cm³ 1.49 -50°C up to
Ø Colour black +90°C
6.0-20.0mm
Max. moisture absorption at +23°C/50% r.h. % weight 0.3
Max. moisture absorption % weight 1.3
Coefficient of friction, dynamic, against steel µ 0.08-0.19 35MPa
pv value, max. (dry) MPa · m/s 0.30
Also available
as: Mechanical properties
For continuous direct sunlight Flexural modulus MPa 2,400
MPa
Flexural strength at +20°C
72
Permanently UV-resistant with properties Compressive strength MPa n.s.
Bar stock, Max. permissible surface pressure (+20°C) MPa 34
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round bar comparable to iglidur J
Page 743 Shore D hardness 74 DIN 53505
Physical and thermal properties
Today, plain bearings appear as special shapes for special uses, in some instances of which they Max. application temperature long-term °C +90
are exposed to UV radiation for long periods of time. igus has therefore developed a new material: Max. application temperature short-term °C +120 FOOD
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iglidur J UV. Min. application temperature °C -50
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Bar stock, ● UV-stabilised Thermal conductivity W/m · K 0.30 ASTM C 177
plate ● Long-term mechanical properties improved -1 -5
Page 773 Coefficient of thermal expansion (at +23°C) K · 10 10 DIN 53752
● High wear resistance Electrical properties
Specific transitional resistance Ωcm > 10 13 DIN IEC 93
Typical application areas Surface resistance Ω > 10 13 DIN 53482
● Solar technology Table 01: Material properties
● Outdoor applications
tribo-tape liner
Page 781 One main advantage of iglidur J UV plain bearings is the Resistance to weathering
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low coefficient of friction in dry operation. The material is iglidur J UV plain bearings are continuously resistant
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resistant to UV radiation and retains its sliding properties. to weathering. The material properties are only slightly
affected. Possible discolourations are only superficial.
Moisture absorption
The moisture absorption of iglidur J UV plain bearings Mechanical properties
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Guide rings
Page 641 in ambient conditions is approximately 0.3% weight. The When temperatures increase, the compressive strength of
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saturation limit submerged in water is 1.3% weight. These iglidur J UV plain bearings decreases. Diagram 02 shows
Descriptive technical specifications values are so low that a moisture expansion need to be this inverse relationship. The maximum recommended
Wear resistance at +23°C – + considered only in extreme cases. surface pressure is a mechanical material parameter. No
conclusions regarding the tribological properties can be
Wear resistance at +90°C – +
Vacuum drawn from this.
Two hole Wear resistance at +150°C – + In vacuum, any present moisture is released as vapour. Use With a maximum recommended surface pressure of
flange
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bearings in vacuum is only possible with dehumidified iglidur J UV 35MPa, iglidur J UV plain bearings are not suitable for
Page 667 Slide property – +
bearings. extreme loads. Diagram 03 shows the elastic deformation
Wear resistance under water – + of iglidur J UV at radial loads.
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Radiation resistance Surface pressure, page 45
Media resistance – +
Plain bearings made from iglidur J UV are resistant up to
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Moulded Resistant to edge pressures – + a radiation intensity of 3 · 10² Gy.
special parts
Page 696 Resistant to shock and impact loads – +
Dirt resistance – +

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