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Rulon Bearings

Polimersan Plastics POLIPOM® (POM)
Categories: Polymer; Thermoplastic; Acetal (Polyoxymethylene, POM); Acetal Copolymer, Unreinforced

Material Notes: POLIPOM® is a plastic which is manufactured by the polymerization of formaldehyde. Its high proportional crystallized structure of the oxygen and methyl groups inside, provides it high proportional hardness and strength even without any addition of reinforced structure material. It is resistant to alkalis and hot water. It is resistant to organic solvents which are commonly used, to petroleum products and to many of the mineral oils.

PROPERTIES OF POLIPOM®:

  • Dimensional Stability
  • High Resistance To Loads and Strokes
  • Excellent Resistance To Corrosion
  • High Mechanical Strength and Non-Twisting
  • High Elasticity
  • Bearing Property at Environments Without Oil
  • High Electrical Insulation Property
  • Low Absorption
  • Resistance To Heat(-50°C - +110°C / short period 150°C)
GENERAL USAGE AREAS OF POLIPOM®: As per its above mentioned technical properties, POLIPOM® is most commonly used in the production of machine molding parts at all sectors; gears, bearings of rolling mills and bearings exposed to extreme loads, conveyor systems, pins, unlimited screws, pistons, pivots and areas like these.

Information provided by Polimersan Polimer Kimya San.Tic.Ltd.Sti.

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Physical PropertiesMetricEnglishComments
Specific Gravity 1.41 - 1.43 g/cc1.41 - 1.43 g/ccISO.1183 DN.53479
Water Absorption 0.50 %0.50 %ISO.62 DN.53495
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell M 78 - 8678 - 86ISO.2039-2
Hardness, Shore D 7575DN.53505
Ball Indentation Hardness 140 - 155 MPa20300 - 22500 psiISO.2039-2
Tensile Strength at Break 70.0 MPa10200 psiISO.527 DN.53455
Tensile Strength, Yield 62.0 - 71.0 MPa8990 - 10300 psiISO.527 DN.53455
Elongation at Break 20 - 75 %20 - 75 %ISO.527 DN.53455
Elongation at Yield 8.0 - 10 %8.0 - 10 %ISO.527 DN.53455
Modulus of Elasticity >= 2.70 GPa>= 392 ksiISO.178 DN.53452
Charpy Impact, Notched 0.800 J/cm²3.81 ft-lb/in²ISO.179 DN.53453
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity >= 1.00e+15 ohm-cm>= 1.00e+15 ohm-cmISO.167 DN.53482
Surface Resistance >= 1.00e+13 ohm>= 1.00e+13 ohmISO.167 DN.53482
Dielectric Strength >= 50.0 kV/mm>= 1270 kV/inISO.243 DN.53481
 
Thermal PropertiesMetricEnglishComments
CTE, linear 110 µm/m-°C
@Temperature 20.0 °C
61.1 µin/in-°F
@Temperature 68.0 °F
DN.53752
Melting Point 165 - 175 °C329 - 347 °F
Maximum Service Temperature, Air 100 °C212 °FISO.75 DN.53461

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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