Babbit bn

  • Babbitt PbIn7
  • Babbitt PbSb10Sn6
  • Babbitt PbSb15Sn10
  • Babbitt PbSb15SnAs
  • Babbitt PbSn10
  • Babbitt PbSn10Cu2
  • Babbitt B16
  • Babbitt B6
  • Babbitt BN
  • Babbitt BS6

    • Designation

    Name The value
    Designation GOST Cyrillic БН
    Designation GOST Latin BH
    Transliteration BN
    By chemical elements BeNi

    Description

    Babbit bn is used: for the manufacture of ingots used to fill the bearings and other parts; bearings operating at medium speeds and medium loads; bearings of diesel engines, compressors, ship belovodov; in engine and metallurgical engineering (to fill the connecting rod, indigenous and head bearings of internal combustion engines, bearings of steam turbines, marine steam turbines up to 1200 HP, steam engines, turbines, electric locomotives, electric motors with power up to 750 kW., generators up to 500 kW compressors power up to 500 HP, lifting machinery, gears, gear train, rolling mills, crushers).

    Note

    Babbit grade bn recommended as a substitute for babbit B16 brand.
    The coefficient of friction of the babbit without lubrication is 0.27, with a lubricant — 0,006. The maximum allowable speed is 15 m/sec. Maximum load capacity: static — 220 kgf/cm2, dynamic: 800 kg/cm2 sec, shock — 60 kgf/cm2 sec. The maximum temperature of normal bearing operation — +130 °C. recommended thickness of fill ≥ 2.0 to 3.0 mm.

    Standards

    Name Code Standards
    Non-ferrous metals, including rare, and their alloys В51 GOST 1320-74, STP М320-74
    Castings, non-ferrous metals and alloys В84 OST 24.916.01-71
    Test methods. Packing. Marking В59 STP М320-2003

    Chemical composition

    Standard Ni Fe Cu As Al Zn Sn Sb Pb Bi Cd
    STP М320-2003 0.1-0.5 ≤0.1 1.5-2 0.5-0.9 ≤0.05 ≤0.02 9-11 13-15 Rest ≤0.1 0.1-0.7
    OST 24.916.01-71 0.75-1.25 ≤0.1 1.5-2 0.5-0.9 - ≤0.15 9-11 13-15 Rest ≤0.1 1.25-1.75
    Pb is the basis.
    The total content of impurities according to OST 24.916.01-71 should be ≤ 0.35%.

    Mechanical properties

    σU, MPa d HB, MPa
    In the delivery condition
    ≥69 ≥1 ≥29

    Description mechanical marks

    Name Description
    σU Limit short-term strength
    d Elongation after rupture
    HB Brinell hardness number

    Physical characteristics

    Temperature r, kg/m3
    20 9550

    A description of the physical symbols

    Name Description
    l Coefficient of thermal conductivity
    С Specific heat