MP-310 bearing structure

MP-310 is a thermoplastic material with a wire of fibers mixed with solid lubricants. The product has an optimal wear resistance also with high loads, good dirt resistant and good resistant to edge loads. There are several applications, ranging from office supplies, to medical equipment, pneumatic cylinders, hinges, rudder bars, etc. The MP-310 series includes cylindrical and flanged bearings as well as washers, and special parts are available on demand.

Operating Conditions





Process fluid

Good Good Good Fair Fair



  • Dry self-lubrications
  • Optimal wear resistance also with high loads
  • Minimized wear and excellent service life
  • Good chemical strength
  • Easy to assembly
  • Wide range of standard items available
  • Special items on demand

General Properties

Density 1,26 g/cm3 (DIN-53479 ASTM-D792)
Max moisture absorption in water at 24 h (23°C) 1,0 % (ISO-62)
Coefficient of sliding friction, dynamic 0,24 ÷ 0,29
P x V Value 0,55 N/mm2 (Dry)
Color Black

Mechanical properties

Tensile strength (23 °C) 90 N/mm2 (ISO-527)
Modulus of elasticity (23 °C) 4800 N/mm2 (ISO-527R)
Elongation at break (23 °C) 3,10% (ISO-527)
Izod – Impact strength (notched) (23 °C) 40 J/m (ASTM D256-A)
Charpy – Impact strength (unnotched) (23 °C) 30 Kj/m2 (ISO 179-1)
Charpy – Impact strength (notched) (23 °C) 4 Kj/m2 (ISO 179-1) 
Max surface speed (rotating) 1,0 m/s
Max surface speed (linear) 5 m/s
Max static surface pressure 70 N/mm2

Physical and thermal properties

Max long term application temperature +135°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 >1015cm (DIN53482)
Surface resistance >1014cm (DIN53482)
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