Technical data

81228

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 140 mm
    D 200 mm
    d1 197 mm
    D1 143 mm
    T 46 mm
    Dc1 140 mm
    Dc 200 mm
    Dw 19 mm
    Lw 19 mm
    B 13.5 mm
    rs min 1.5 mm
    Cage assembly reference K81228
    Bearing ring (inner ring) WS WS81228
    Bearing ring (outer ring) GS GS81228
    Ea 189 mm
    Eb 150.1 mm
    Mass 4.57 kg
    Cage assembly mass 1.2 kg
    Bearing ring (inner ring) WS mass 1.69 kg
    Bearing ring (outer ring) GS mass 1.69 kg
    Precision class P0
    Brand NTN
  • Product performance

    Product performance
    Ca 370 kN
    C0a 1,280 kN
    Nlim (grease) 350 Tr/min
    Nlim (oil) 1,400 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 8.92 Hz
    Characteristic outer ring frequency, BPF0 9 Hz
    Characteristic inner ring frequency, BPFI 9 Hz
  • Abutment dimensions

    Abutment dimensions
    da min 188 mm
    Db max 150 mm
    ras max 1.5 mm

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