Technical data

81220

Complete thrust bearing

Needle roller bearing, thrust cylindrical roller bearing, 812 series

Needle roller bearing, thrust cylindrical roller bearing, 812 series
  • Visual(s)

    Visual(s)
  • Product definition

    Product definition
    d 100 mm
    D 150 mm
    d1 150 mm
    D1 103 mm
    T 38 mm
    Dc1 100 mm
    Dc 150 mm
    Dw 15 mm
    Lw 15 mm
    rs min 1.1 mm
    Cage assembly reference K81220
    Bearing ring (inner ring) WS WS81220
    Bearing ring (outer ring) GS GS81220
    Ea 140 mm
    Eb 109.2 mm
    Mass 2.24 kg
    Cage assembly mass 0.62 kg
    Bearing ring (inner ring) WS mass 0.81 kg
    Bearing ring (outer ring) GS mass 0.81 kg
    Brand NTN
  • Product performance

    Product performance
    Ca 243 kN
    C0a 795 kN
    Nlim (grease) 480 Tr/min
    Nlim (oil) 1,900 Tr/min
    Min operating temperature, Tmin -20 °C
    Max operating temperature, Tmax 120 °C
    Characteristic cage frequency, FTF 0.5 Hz
    Characteristic rolling element frequency, BSF 8.31 Hz
    Characteristic outer ring frequency, BPF0 9 Hz
    Characteristic inner ring frequency, BPFI 9 Hz
  • Abutment dimensions

    Abutment dimensions
    da min 139 mm
    Db max 109 mm
    ras max 1 mm

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