Technical data

NA4844

Needle roller bearing, machined-ring, with inner ring

Needle roller bearing, machined-rings, with inner ring, double-side ribs

Needle roller bearing, machined-rings, with inner ring, double-side ribs
  • Visual(s)

    Visual(s)
  • Product definition

    Product definition
    d 220 mm
    D 270 mm
    C 50 mm
    F 240 mm
    rs min 1.5 mm
    s max 1.5 mm
    Dw 7.5 mm
    Lw 40 mm
    Lubrication hole on outer ring Oui/Yes
    k 4 mm
    Lubrication hole on inner ring Non/No
    Radial clearance class CN
    Precision class P0
    Mass 6.37 kg
    Brand NTN
  • Product performance

    Product performance
    Cr 244 kN
    C0r 780 kN
    Nlim (grease) 1,100 Tr/min
    Nlim (oil) 1,700 Tr/min
    Min operating temperature, Tmin -20 °C
    Max operating temperature, Tmax 120 °C
    Characteristic cage frequency, FTF 0.48 Hz
    Characteristic rolling element frequency, BSF 32.97 Hz
    Characteristic outer ring frequency, BPF0 31.03 Hz
    Characteristic inner ring frequency, BPFI 32.97 Hz
  • Abutment dimensions

    Abutment dimensions
    da min 228 mm
    Da max 262 mm
    ras max 1.5 mm

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