I am looking for : References Interchanges

6903JRX - NTN


Deep groove ball bearing, radial contact, pressed steel cage, open

The single row deep-groove ball bearing is the most popular bearing. It is available in a wide range of sizes with several possible options: sealing with shields or seals, presence of a retaining ring, varied clearances, several cage types, etc.


CAD file

Technical datasheet

PLEASE LOGIN to add products to your basket
Contact us


Internal diameter d 17 mm
External diameter D 30 mm
Bearing/Inner ring width(B) 7 mm
Min fillet radius rs 0,3 mm
Radial clearance class CN
Mass 0,018 kg
Brand NTN
Product classification image


Dynamic load, C 5,15 kN
Static load, C0 2,58 kN
Fatigue limit load, Cu 0,202 kN
Coefficient f0 14.7
Nlim (oil) 26000 tr/min
Nlim (grease) 22000 tr/min
Min operating temperature, Tmin -40 °C
Max operating temperature, Tmax 120 °C
Characteristic cage frequency, FTF 0,415 Hz
Characteristic rolling element frequency, BSF 5,705 Hz
Characteristic outer ring frequency, BPF0 4,564 Hz
Characteristic inner ring frequency, BPFI 6,436 Hz


Min shoulder diameter IR da min 19 mm
Max shoulder diameter OR Da max 28 mm
Max shaft & housing fillet radius ra max 0,3 mm
Product classification image
Calcul factors image