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HALLITE 87 BEARING SEAL

    Hallite bearing seal 87

    Technical details

    OPERATING CONDITIONSMETRICINCH
    Maximum Speed5.0 m/sec16 ft/sec
    Temperature Range-50°C +200°C-58°F +390°F
    TYPICAL PHYSICAL PROPERTIESMETRICINCH
    Specific Gravity3.13.1
    Compression Stress at Yield20 MN/m² @ 23°C2900 psi @ 73°F
    Compression Stress at Yield9 MN/m² @ 80°C1300 psi @ 176°F
    Coefficient of Thermal Conductivity2.5 W/mK1.4 Btu/hft°F
    Coefficient of Thermal Expansion –
    Length & Thickness
    6.5 x 10-5 per °C3.6 x 10-5 per °F
    Coefficient of Dynamic Friction on Steel Surface (0.2 μmRa) / (8 μinCLA)Dry 0.25Dry 0.25
    Lubricated 0.05Lubricated 0.05
    HOUSING DETAILS & TOLERANCES
    RodØd₁ mmf9
    ØD₂ = Ød₁ + 2S mm≤ Ø80 H10 > Ø80 H9
    ØD₃ = Ød₁ + G mmG min / max
    L₁ mm+0.20 -0
    PistonØD₁ mmH11
    Ød₂ = ØD₁ – 2S mmh8
    Ød₃ = ØD₁ – G mmG min / max
    L₁ mm+0.20 -0
    SURFACE ROUGHNESSµmRaµmRzµmRtµinRaµinRzµinRt
    Dynamic Sealing Face Ød₁, ØD₁0.41.6 max4 max1663 max157 max
    Static Sealing Face ØD₂, L₁, Ød₂3.2 max10 max16 max125 max394 max630 max

    METRIC
    Part No.L₁S
    87720005.601.50
    87721006.004.00
    87722006.302.00
    87723006.302.50
    87724008.001.50
    87725008.002.00
    87726008.004.00
    87727009.704.00
    666330010.002.00
    877280010.002.50
    877290012.002.00
    877300012.002.50
    666340015.002.00
    663500020.002.00
    877310025.003.00
    877320030.003.00
    877330050.002.00