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Rulon Bearings

Polikim POLITAL® Polyoxymethylene (POM)
Categories: Polymer; Thermoplastic; Acetal (Polyoxymethylene, POM)

Material Notes: Polital® is completely resistant to solvents, petroleum products, oil and grease. It is not resistant to strong acids, bases and oxidants. As it is affected by UV rays, its use in open air is not recommended. Applications: Gears, Guides, Cams, Electrical insulation, Conveyor components, Machine components, Bearings, Bolts, nuts, Hinges, junctures, Components subject to wear in humid environments or water

Information provided by Polikim Polimer.

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Physical PropertiesMetricEnglishComments
Density 1.40 g/cc0.0506 lb/in³ISO 1183
Water Absorption at Saturation 0.90 %0.90 %ISO 62
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore D 8383ISO 868
Tensile Strength, Ultimate 61.8 MPa8960 psiISO 527
Elongation at Break 30 %30 %ISO 527
Tensile Modulus 2.80 GPa406 ksiISO 527
Izod Impact, Notched (ISO) 8.00 kJ/m²3.81 ft-lb/in²ISO 180
Charpy Impact Unnotched NBNBISO 179
Coefficient of Friction 0.300.30
 
Electrical PropertiesMetricEnglishComments
Dielectric Strength 55.0 kV/mm1400 kV/inISO 60243
 
Thermal PropertiesMetricEnglishComments
CTE, linear 100 µm/m-°C55.6 µin/in-°FISO 11359
Thermal Conductivity 0.310 W/m-K2.15 BTU-in/hr-ft²-°FISO 8301
Melting Point 168 °C334 °F
Maximum Service Temperature, Air 90.0 °C194 °Fcontinuous
Minimum Service Temperature, Air -30.0 °C-22.0 °F

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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