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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 diameter70 mm
D - External diameter110 mm
B - Bearing/Inner ring width20 mm
d1 - External diameter inner ring82,6 mm
d2 - External diameter inner ring80,5 mm
D1 - Inner diameter outer ring97,41 mm
D2 - Inner diameter outer ring101,51 mm
a - Charge load application point31 mm
α - Contact angle25 °
rs - Min fillet radius1,1 mm
r1s - Min fillet radius1 mm
Precision classP4S
Mass0,625 kg
Product classification image
C - Dynamic load22,6 kN
C0 - Static load16,5 kN
Cu - Fatigue limit load0,93 kN
f0 - Coefficient8.345
Axial displacement K Factor0.51
Preload level7
Preload value0,19 kN
Axial rigidity159 N/µm
Radial rigidity349 N/µm
Tmin - Min operating temperature-30 °C
Tmax - Max operating temperature120 °C
Nlim - Oil lubrication limit speed22000 tr/min
Nlim - Grease lubrication limit speed15000 tr/min
BPFO - Characteristic outer ring frequency (60 rpm)10,827 Hz
BPFI - Characteristic inner ring frequency (60 rpm)13,173 Hz
FTF - Characteristic cage frequency (60 rpm)0,451 Hz
BSF - Characteristic rolling element frequency (60 rpm)9,182 Hz
da min - Min shoulder diameter IR77 mm
db min - Min IR shoulder diameter77 mm
Da max - Max shoulder diameter OR103 mm
Db max - Max OR shoulder diameter103 mm
r1a - Max fillet radius1 mm
ra max - Max shaft & housing fillet radius1 mm
Product classification image
Calcul factors image