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ML71903CVUJ74S - SNR


High precision angular contact ball bearing, high speed series ML, laminated resin cage centred on outer ring

In the ball bearing and high precision bearing ranges, the high precision angular contact ball bearing solves the maximum reliability constraints with increased performance in terms of rigidity, speed, capacity and precision. This bearing is recommended for demanding applications in terms of precision such as machine tool spindles. NTN-SNR is getting under ranges dedicated to requirements of speed, sealing, specific greasing, etc.


3D file

Technical datasheet

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d - Internal diameter17 mm
D - External diameter30 mm
B - Bearing/Inner ring width7 mm
d1 - External diameter inner ring21 mm
d2 - External diameter inner ring20,05 mm
D1 - Inner diameter outer ring26,65 mm
D2 - Inner diameter outer ring27,25 mm
a - Charge load application point7 mm
α - Contact angle17 °
rs - Min fillet radius0,3 mm
r1s - Min fillet radius0,3 mm
Precision classP4S
Mass0,017 kg
Product classification image
C - Dynamic load2,14 kN
C0 - Static load1,07 kN
Cu - Fatigue limit load0,08 kN
f0 - Coefficient8.066
Axial displacement K Factor1.85
Preload level7
Preload value0,011 kN
Axial rigidity17 N/µm
Radial rigidity84 N/µm
Tmin - Min operating temperature-30 °C
Tmax - Max operating temperature120 °C
Nlim - Oil lubrication limit speed94000 tr/min
Nlim - Grease lubrication limit speed68000 tr/min
BPFO - Characteristic outer ring frequency (60 rpm)7,974 Hz
BPFI - Characteristic inner ring frequency (60 rpm)10,026 Hz
FTF - Characteristic cage frequency (60 rpm)0,443 Hz
BSF - Characteristic rolling element frequency (60 rpm)8,278 Hz
da min - Min shoulder diameter IR19,5 mm
db min - Min IR shoulder diameter19,5 mm
Da max - Max shoulder diameter OR27,5 mm
Db max - Max OR shoulder diameter27,5 mm
r1a - Max fillet radius0,3 mm
ra max - Max shaft & housing fillet radius0,3 mm
Product classification image
Calcul factors image