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ML71911HVUJ74S - 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 diameter55 mm
D - External diameter80 mm
B - Bearing/Inner ring width13 mm
d1 - External diameter inner ring63,1 mm
d2 - External diameter inner ring61,15 mm
D1 - Inner diameter outer ring73,71 mm
D2 - Inner diameter outer ring75,31 mm
a - Charge load application point22 mm
α - Contact angle25 °
rs - Min fillet radius1 mm
r1s - Min fillet radius0,3 mm
Precision classP4S
Mass0,177 kg
Product classification image
C - Dynamic load9,5 kN
C0 - Static load7,2 kN
Cu - Fatigue limit load0,41 kN
f0 - Coefficient8.618
Axial displacement K Factor0.58
Preload level7
Preload value0,08 kN
Axial rigidity104 N/µm
Radial rigidity231 N/µm
Tmin - Min operating temperature-30 °C
Tmax - Max operating temperature120 °C
Nlim - Oil lubrication limit speed29000 tr/min
Nlim - Grease lubrication limit speed20000 tr/min
BPFO - Characteristic outer ring frequency (60 rpm)13,868 Hz
BPFI - Characteristic inner ring frequency (60 rpm)16,132 Hz
FTF - Characteristic cage frequency (60 rpm)0,462 Hz
BSF - Characteristic rolling element frequency (60 rpm)11,937 Hz
da min - Min shoulder diameter IR60,5 mm
db min - Min IR shoulder diameter60,5 mm
Da max - Max shoulder diameter OR74,5 mm
Db max - Max OR shoulder diameter74,5 mm
r1a - Max fillet radius0,3 mm
ra max - Max shaft & housing fillet radius1 mm
Product classification image
Calcul factors image