Descrizione

Tapered roller bearing, pressed steel cage

d220 mm
D340 mm
B76 mm
C57 mm
T76 mm
d1281.5 mm
a72.5 mm
rs min4 mm
r1s min3 mm
e0.43
Y21.39
Y00.77
Mass25 kg
ISO 355 referenceT4FD220
BrandNTN
Dynamic load, C920 kN
Rating life coefficient, A21
Static load, C01,690 kN
Fatigue limit load, Cu151 kN
Nlim (oil)1,300 Tr/min
Nlim (grease)960 Tr/min
Min operating temperature, Tmin-40 °C
Max operating temperature, Tmax120 °C
Characteristic cage frequency, FTF0.45 Hz
Characteristic rolling element frequency, BSF9.48 Hz
Characteristic outer ring frequency, BPF012.6 Hz
Characteristic inner ring frequency, BPFI15.4 Hz
da max243 mm
db min238 mm
Da min300 mm
Da max326 mm
Db min326 mm
Ca min12 mm
Cb min19 mm
ra max3 mm
r1a max2.5 mm
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