MP-340 bearing structure

MP-340 is a thermoplastic material with a wire of fibers mixed with solid lubricants. The product has a good wear resistance, low water absorption and high loads resistant .There are several applications, ranging from office supplies, to medical equipment, pneumatic cylinders, hinges, rudder bars, etc. The MP-340 series includes cylindrical and flanged bearings as well as washers, and special parts are available on demand.

Operating Conditions





Process fluid

Good Good Good Good Good



  • Dry self-lubrications
  • Good wear resistance
  • Low water absorption
  • Good chemical resistant
  • Easy to assembly
  • Wide range of standard items available
  • Special items on demand

General Properties

Density 1,45 g/cm3 (DIN-53479 ASTM-D792)
Max moisture absorption in water at 24 h (23°C) 0,15 % (ISO-62)
Coefficient of sliding friction, dynamic 0,08 ÷ 0,20
P x V Value 0,43 N/mm2 (Dry)
Color White

Mechanical properties

Tensile strength (23 °C) 120 N/mm2 (ISO-527)
Modulus of elasticity (23 °C) 5300 N/mm2 (ISO-527R)
Elongation at break (23 °C) 2% (ISO-527)
Izod – Impact strength (notched) (23 °C) 90 J/m (ASTM D256-A)
Charpy – Impact strength (unnotched) (23 °C) 43 Kj/m2 (ISO 179-1)
Charpy – Impact strength (notched) (23 °C) 8 Kj/m2 (ISO 179-1) 
Max surface speed (rotating) 1,0 m/s
Max surface speed (linear) 3 m/s
Max static surface pressure 50 N/mm2

Physical and thermal properties

Max long term application temperature +130°C
Min long term application temperature -40°C
Coefficient of thermal expansion (+30°C +100°C) 4 K-1 * 10-5 (DIN53752)

Electrical properties

Specific volume resistance >1013cm (DIN53482)
Surface resistance >1012cm (DIN53482)
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