ML-1 Self-Lubricated Bearings

Flanged cylindrical bearing ML-1

ML-1 bearings are unique composite bearings built with a woven/expanded bronze mesh embedded in PTFE (polytetrafluoroethylene). This combination offers several key advantages:

  • Lead-free and environmentally friendly: The solid lubricants used in the PTFE comply with the European Parliament's "ELV" directive 2000/53/Ec, making them a sustainable choice.
  • Low friction and high chemical resistance: Similar to pure PTFE, ML-1 bearings exhibit exceptional low friction and high resistance to various chemicals.
  • Enhanced mechanical strength: The metallic backing layer provides the bearings with the necessary strength and formability for diverse applications.
  • Excellent thermal conductivity: The composite structure of ML-1 bearings ensures efficient heat dissipation.

ML-1 bearings are available in various forms, including cylindrical bearings, flanged bearings, and washers, with thicknesses ranging from 0.75 mm to 1.50 mm (0.029 to 0.059 inches).

Operating Conditions

  • dry condition icon
    DRY Very Good
  • dry condition icon
    OIL Good
  • dry condition icon
    GREASE Good
  • dry condition icon
    WATER Fair
  • dry condition icon

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composite layers of ML-1 bearing preview
composite layers of ML-1 bearing

Structure of the composite material

Layer Average analyses of the material Thickness of layer
Sliding layer PTFE impregnated Bronze woven mesh 0,50 mm
Supporting shell Low Carbon Steel DC 04 (EN 10139)
  • Cu = 0,060 Max
  • Mn = 0,15 ÷ 0,32
  • P = 0,025 Max
  • S = 0,030 Max
  • Al = 0,028 ÷ 0,070
0,250 ÷ 1,000 mm (Depending on final thickness required)
Protective layer Sn or Zn (as per customer requirement) > 1 μm


  • Extra-thick sliding layer with woven/expanded metal mesh support embedded with PTFE helps in edge loading
  • High calibration / sizing assembly to compensate higher tolerances of hinge hole and pin
  • Electrically conductive to enable EDP (Electro-Phoretic Deposition), also available with notches
  • Right fit according to requirement to achieve desired torque value
  • Noise-free / smooth operation in assembly

Technical Data

Maximum Specific Load Static 150-300 N/mm2
Maximum Specific Load Dynamic 100-170 N/mm2
Service Temperature Minimum -200°C (-328°F)
Service Temperature Maximum +180°C (+356°F)
Service Temperature Intermittent +260°C (+500°F)
Maximum Speed Dry 1.0 m/s (200 fpm)
Coefficient of Friction Dry 0.07 - 0.17

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