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.


CAD file

Technical datasheet

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Internal diameter (d) 15 mm
External diameter (D) 32 mm
Bearing/Inner ring width (B) 9 mm
External diameter inner ring d1 20,15 mm
External diameter inner ring (d2) 18,8 mm
Inner diameter outer ring (D1) 27,15 mm
Inner diameter outer ring D2 28,45 mm
Charge load application point a 10 mm
Contact angle α 25 °
Min fillet radius (rs) 0,3 mm
Min fillet radius r1s 0,3 mm
Coefficient f0 7.635
Precision class P4S
Mass 0,028 kg
Brand SNR
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Dynamic load (C) 3,25 kN
Static load (C0) 1,42 kN
Fatigue limit load (Cu) 0,09 kN
Axial displacement K Factor 1.14
Preload level 8
Preload value 80000 kN
Axial rigidity 54 N/µm
Radial rigidity 116 N/µm
Min operating temperature (Tmin) -20 °C
Max operating temperature (Tmax) 120 °C
Nlim (grease) 57000 tr/min
Characteristic cage frequency, FTF 0,421 Hz
Characteristic rolling element frequency, BSF 5,627 Hz
Characteristic outer ring frequency, BPF0 5,479 Hz
Characteristic inner ring frequency, BPFI 7,521 Hz


Min shoulder diameter IR (da min) 17,5 mm
Min IR shoulder diameter (db min) 17,5 mm
Max shoulder diameter OR (Da max) 29,5 mm
Max OR shoulder diameter (Db max) 29,5 mm
Maxi fillet radius r1a 0,3 mm
Max shaft & housing fillet radius (ra max) 0,3 mm
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Calcul factors image