Precision Ball Bearings 71903DS-BKE 7

B-42.9 mm F-20 mm rs min-5.8 mm Lubrication hole on inner ring-34.92 mm t-72 mm

d-10.81 Hz d1-3 mm D-2.5 mm G-140 mm m-31.5 mm

Characteristic inner ring frequency, BPFI-0.99 da min-7.06 kg da max-NTN dc min-445 kN Da max-1

G-20 mm m-6.5 mm r-49.21 mm S-69.9 mm SW-90 mm

Dw1-33 mm Lw-52.5 mm Lubrication hole on outer ring-77 mm Precision class-1.5 mm Mass-3

initial grease quantity-6.81 Hz O-ring (optional)-9.19 Hz Brand-40.5 mm fixing bolts G-56.5 mm recommended torque-57.5 mm

Nlim (grease)-0.46 Min operating temperature, Tmin-1.31 Max operating temperature, Tmax-0.72 Characteristic cage frequency, FTF-6.37 kg Characteristic rolling element frequency, BSF-T4EC150

Characteristic outer ring frequency, BPF0-2.1 mm Characteristic inner ring frequency, BPFI-CN da max-2.76 kg db min-166 kN Da min-195 kN

A2-42.9 mm B1-20 mm d-5.8 mm d1-34.92 mm Dz-72 mm

Nlim (grease)-7,300 rpm Min operating temperature, Tmin-5,200 rpm Max operating temperature, Tmax--20 °C Characteristic cage frequency, FTF-120 °C Characteristic rolling element frequency, BSF-0.42 Hz

Characteristic cage frequency, FTF-11.9 kN Characteristic rolling element frequency, BSF-6,400 rpm Characteristic outer ring frequency, BPF0-4,800 rpm Characteristic inner ring frequency, BPFI--40 °C da max-120 °C

Min operating temperature, Tmin-178 kN Max operating temperature, Tmax-20.3 kN Characteristic cage frequency, FTF-5,000 rpm Characteristic rolling element frequency, BSF-4,300 rpm Characteristic outer ring frequency, BPF0--40 °C

Dynamic load, C-68.26 mm Static load, C0-102 mm Fatigue limit load, Cu-150 mm Nlim (oil)-7/16-20UNF Nlim (grease)-12 mm

T max.--40 °C Weight-120 °C Recommended tightening torque for set screw-122 mm B-188 mm C-193 mm