Technical data
4T-30306D
Single row tapered roller bearings
Tapered roller bearing, pressed steel cage
Tapered roller bearing, pressed steel cage
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Visual(s)
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Product definition
d 30 mm D 72 mm B 19 mm C 14 mm T 20.75 mm d1 53 mm a 23.5 mm rs min 1.5 mm r1s min 1.5 mm e 0.83 Y2 0.73 Y0 0.4 Mass 0.4 kg ISO 355 reference T7FB030 Brand NTN -
Product performance
Dynamic load, C 48.5 kN Rating life coefficient, A2 1.4 Static load, C0 51.5 kN Fatigue limit load, Cu 6.3 kN Nlim (oil) 6,700 Tr/min Nlim (grease) 5,000 Tr/min Min operating temperature, Tmin -40 °C Max operating temperature, Tmax 120 °C Characteristic cage frequency, FTF 0.42 Hz Characteristic rolling element frequency, BSF 5.53 Hz Characteristic outer ring frequency, BPF0 6.34 Hz Characteristic inner ring frequency, BPFI 8.66 Hz -
Abutment dimensions
da max 39 mm db min 38.5 mm Da min 55 mm Da max 63.5 mm Db min 68 mm Ca min 3 mm Cb min 6.5 mm ra max 1.5 mm r1a max 1.5 mm -
Calculation factors
