MP-340

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

Dry

Oil

Grease

Water

Process fluid

Good Good Good Good Good

Availability

Characteristics

  • 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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