Page 620 - IGUS Bearing

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iglidur iglidur
RW370 RW370
+170°C +170°C
75MPa 75MPa
Bearing technology | Plain bearings | iglidur RW370 Technical data
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General properties Testing method

Density g/cm³ 1.34 -50 °C up to
Ø Colour beige +170 °C
6.0-20.0mm
Max. moisture absorption at +23°C/50% r.h. % weight 0.25 ISO 175
Max. moisture absorption % weight 1.2 ISO 62
Coefficient of friction, dynamic, against steel µ 0.13-0.17 75MPa
pv value, max. (dry) MPa · m/s 1.20
Also available
as: Mechanical properties
For the rail industry, complies with DIN EN Flexural modulus MPa 2,997 DIN EN ISO 178
Flexural strength at +20°C
100
DIN EN ISO 178
MPa
45545 HL3, R22/R23 Compressive strength MPa 129
Bar stock, Max. permissible surface pressure (+20°C) MPa 75
round bar Wear-resistant for rail technology
Page 743 Shore D hardness 80 DIN 53505
Physical and thermal properties
The first iglidur material that fulfills the European fire safety standard for rail vehicles is suitable Max. application temperature long-term °C +170
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for many wear-stressed applications in railway technology due to its very complete property Max. application temperature short-term °C +190 FOOD
profile. Min. application temperature °C -50

Bar stock, ● Complies with the European fire protection standard DIN EN 45545 HL3 requirement set R22/R23 Thermal conductivity W/m · K 0.22 ASTM C 177
plate ● Flame-retardant -1 -5
Page 773 Coefficient of thermal expansion (at +23°C) K · 10 5 DIN 53752
● High wear resistance Electrical properties
● Low coefficient of friction Specific transitional resistance Ωcm >10 12 DIN IEC 93
● Lubrication and maintenance-free Surface resistance Ω > 10 12 DIN 53482
Table 01: Material properties
Typical application areas
tribo-tape liner
Page 781 ● Door guides and hinges iglidur RW370 was specially developed for the fire Resistance to weathering
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● Rotating joint protection requirements in railway technology. It fulfils the iglidur RW370 plain bearings are continuously resistant
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● Entrance staircases specification of DIN EN 45545. Plain bearings made of to weathering. The material properties are only slightly
● Seat table mechanisms
iglidur RW370 are used primarily in door systems, seat affected. Possible discolourations are only superficial.
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adjustments and joints, as well as hinges.
Mechanical properties
Guide rings
Page 641 Moisture absorption With increasing temperatures, the compressive strength
The moisture absorption of iglidur RW370 plain bearings is of iglidur RW370 plain bearings decreases. Diagram
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Descriptive technical specifications below 0.25% weight in ambient conditions. The saturation 02 shows this inverse relationship. The maximum
Wear resistance at +23°C – + limit submerged in water is 1.2% weight. recommended surface pressure is a mechanical material
parameter. No conclusions regarding the tribological
Wear resistance at +90°C – +
Vacuum properties can be drawn from this.
Two hole Wear resistance at +150°C – + In vacuum, the moisture content is released as vapour. Due Diagram 03 shows the elastic deformation of iglidur RW370
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flange
bearings to its low moisture absorption, use in a vacuum is possible. under different loads. A possible deformation could be,
Page 667 Slide property – +
among others, dependant on the duty cycle of the load.
Wear resistance under water – + Radiation resistance Surface pressure, page 45
Plain bearings made from iglidur RW370 are resistant up
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Media resistance – +
to a radiation intensity of 3 · 10² Gy.
Moulded Resistant to edge pressures – +
special parts
Page 696 Resistant to shock and impact loads – +

Dirt resistance – +

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igubal Online product finder Online service life calculation
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618 3D-CAD, finder and service life calculation ... www.igus-asean.com/RW370 Lubrication-free made easy ... from stock ... no minimum order quantity 619