MP-400 bearing structure

MP-400 is a thermoplastic material with a wire of fibers mixed with solid lubricants. This product are developed for use underwater, in atmospheres with high humidity and it has a very low moisture absorption, good chemical resistant, high temperature resistance and high mechanical loading resistant. The MP-400 series includes cylindrical and flanged bearings as well as washers, and special parts are available on demand.

Operating Conditions





Process fluid

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  • Underwater applications
  • Low moisture absorption
  • Dry self-lubrications
  • Minimized wear and excellent service life
  • For high mechanical loading
  • For high temperature resistance
  • 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) 0,10 % (ISO-62)
Coefficient of sliding friction, dynamic 0,10 ÷ 0,21
P x V Value 1,40 N/mm2 (Dry)
Color Black

Mechanical properties

Tensile strength (23 °C) 130 N/mm2 (ISO-527)
Modulus of elasticity (23 °C) 16000 N/mm2 (ISO-527R)
Elongation at break (23 °C) 0,70% (ISO-527)
Izod – Impact strength (notched) (23 °C) 45 J/m (ASTM D256-A)
Charpy – Impact strength (unnotched) (23 °C) 20 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) 3 m/s
Max static surface pressure 90 N/mm2

Physical and thermal properties

Max long term application temperature +200°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 >105cm (DIN53482)
Surface resistance >105cm (DIN53482)
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