Page 1037 - IGUS Bearing

xiros polymer ball bearings | Material properties
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xirodur ® Unit B180 S180 C160 A500 F180 F182 F500 D180 K220 MT180 ECO B180 S180LF igumid G
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General properties

Density [g/cm ] 1.41 1.40 1.11 1.30 1.36 1.42 1.40 1.22 1.35 1.41 1.41 1.41 1.37
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Colour

Max. moisture absorption at [% weight] 0.2 0.2 0.1 0.1 0.2 0.2 0.3 0.5 0.2 0.2 0.2 0.2 1.4
+23 °C/50% r.h.

Max. moisture absorption [% weight] 0.7 0.7 0.2 0.4 1.3 0.7 0.45 1.4 0.4 0.65 0.7 0.8 5.6

Mechanical properties

Flexural modulus [MPa] 2,500 2,700 1,900 4,300 1,600 3,000 24,000 135 2,200 2,700 2,500 2,550 7,800

Flexural strength at +20°C [MPa] 68 65 35 130 70 95 380 n.a. 60 n.s. 68 87 240

Shore D hardness 77 78 67 85 79 79 87.5 48 77 n.s. 77 77 79

Physical and thermal properties

+150 (PEEK)
Max. continuous operating temperature [°C] +80 +80 +60 +80 +80 +150 +80 +120 +80 +100 +100 +120
+120 (PA)
Min. long-term application temperatures [°C] -40 -40 0 -100 (PEEK) -40 -40 -50 -50 +140 -40 -40 -40 -40
(in combination with cage material) -40 (PA)

Electrical properties
Specific transitional resistance 1) [Ωcm] > 10 14 > 10 13 > 10 14 > 10 14 > 10 12 1) > 10 4 > 10 5 > 10 14 > 10 12 > 10 14 > 10 14 > 10 14 > 10 11
Surface resistance 1) [Ω] > 10 14 > 10 13 > 10 14 > 10 14 > 10 12 1) > 10 4 > 10 4 > 10 14 > 10 10 > 10 14 > 10 14 > 10 16 > 10 11
Medium

Alcohols + + + + + + + + up to 0 + + + + +
Diluted acid 0 up to – 0 up to – + + 0 up to – 0 up to – + + up to 0 + + + + +
Diluted base + + + + + + + + up to 0 + + + + 0 up to –
Fuels + + + up to 0 + + + + + + + + + +
Greases, oils without additives + + + + + + + + + + + + +
Hydrocarbons + + + up to 0 + + + + + + + + + +
Strong acids – – + up to 0 + – – + 0 + + + + + up to 0
Strong alkaline + up to 0 + up to 0 + + + up to 0 + up to 0 + + up to 0 + + + + –
UV radiation – 0 0 + 0 0 + – + + + + –
1) Depending on the geometry + resistant 0 conditionally resistant – non-resistant
Table 01: Material data and chemical resistance of xiros materials Detailed chemicals resistance table for xiros products u From page 1894
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Recommended tolerances Ball materials Cage materials

Fitting Housing hole Shaft Designation Description Designation Description
Standard: ES: Stainless steel 1,4401 10: PA
Press-fit H7 h6 GL : Glass Soda-lime glass or borosilicate glass 20: PP
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For further questions about the dimensioning of the hole and the shaft please contact us. PAI: Plastic Polyamide-imide 30: xirodur B180
PP: Plastic Polypropylene 35: iglidur J3
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ASEAN 09/2023 ASEAN 09/2023 70: PEEK
50:
PE

1034 Online tools and more information u www.igus-asean.com/xiros 3D CAD files, prices and delivery time online u www.igus-asean.com/xiros 1035