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ML71905HVUJ74S - 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 diameter25 mm
D - External diameter42 mm
B - Bearing/Inner ring width9 mm
d1 - External diameter inner ring30,6 mm
d2 - External diameter inner ring29,4 mm
D1 - Inner diameter outer ring37,65 mm
D2 - Inner diameter outer ring38,95 mm
a - Charge load application point12 mm
α - Contact angle25 °
rs - Min fillet radius0,3 mm
r1s - Min fillet radius0,3 mm
Precision classP4S
Mass0,041 kg
Product classification image
C - Dynamic load4,05 kN
C0 - Static load2,23 kN
Cu - Fatigue limit load0,13 kN
f0 - Coefficient8.224
Axial displacement K Factor0.88
Preload level7
Preload value0,035 kN
Axial rigidity52 N/µm
Radial rigidity116 N/µm
Tmin - Min operating temperature-30 °C
Tmax - Max operating temperature120 °C
Nlim - Oil lubrication limit speed58000 tr/min
Nlim - Grease lubrication limit speed40000 tr/min
BPFO - Characteristic outer ring frequency (60 rpm)8,477 Hz
BPFI - Characteristic inner ring frequency (60 rpm)10,523 Hz
FTF - Characteristic cage frequency (60 rpm)0,446 Hz
BSF - Characteristic rolling element frequency (60 rpm)8,318 Hz
da min - Min shoulder diameter IR27,5 mm
db min - Min IR shoulder diameter27,5 mm
Da max - Max shoulder diameter OR39,5 mm
Db max - Max OR shoulder diameter39,5 mm
r1a - Max fillet radius0,3 mm
ra max - Max shaft & housing fillet radius0,3 mm
Product classification image
Calcul factors image