High precision angular contact ball bearing, sealed 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 point17 mm
α - Contact angle17 °
rs - Min fillet radius1 mm
r1s - Min fillet radius0,3 mm
Precision classP4S
Mass0,177 kg
Product classification image
C - Dynamic load10 kN
C0 - Static load7,6 kN
Cu - Fatigue limit load0,41 kN
f0 - Coefficient8.566
Axial displacement K Factor1.05
Preload level8
Preload value0,15 kN
Axial rigidity75 N/µm
Radial rigidity356 N/µm
Tmin - Min operating temperature-20 °C
Tmax - Max operating temperature120 °C
Nlim - Grease lubrication limit speed24000 tr/min
BPFO - Characteristic outer ring frequency13,805 Hz
BPFI - Characteristic inner ring frequency16,195 Hz
FTF - Characteristic cage frequency0,46 Hz
BSF - Characteristic rolling element frequency11,929 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