Technical datasheet

81128

Complete thrust bearing

Needle roller bearing, thrust cylindrical roller bearing, 811 series

Needle roller bearing, thrust cylindrical roller bearing, 811 series
  • Visual(s)

    Visual(s)
  • Product definition

    Product definition
    d 140 mm
    D 180 mm
    d1 178 mm
    D1 142 mm
    T 31 mm
    Dc1 140 mm
    Dc 180 mm
    Dw 12 mm
    Lw 12 mm
    rs min 1 mm
    Cage assembly reference K81128
    Bearing ring (inner ring) WS WS81128
    Bearing ring (outer ring) GS GS81128
    Ea 172.5 mm
    Eb 147.8 mm
    Mass 1.95 kg
    Cage assembly mass 0.45 kg
    Bearing ring (inner ring) WS mass 0.75 kg
    Bearing ring (outer ring) GS mass 0.75 kg
    Brand NTN
  • Product performance

    Product performance
    Ca 206 kN
    C0a 815 kN
    Nlim (grease) 380 Tr/min
    Nlim (oil) 1,500 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 13.35 Hz
    Characteristic outer ring frequency, BPF0 14 Hz
    Characteristic inner ring frequency, BPFI 14 Hz
  • Abutment dimensions

    Abutment dimensions
    da min 172 mm
    Db max 147 mm
    ras max 1 mm

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