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.


CAD file

Technical datasheet

PLEASE LOGIN to add products to your basket
Contact us


Internal diameter (d) 50 mm
External diameter (D) 80 mm
Bearing/Inner ring width (B) 16 mm
External diameter inner ring d1 59,7 mm
External diameter inner ring (d2) 57,4 mm
Inner diameter outer ring (D1) 71,41 mm
Inner diameter outer ring D2 73,81 mm
Charge load application point a 23 mm
Contact angle α 25 °
Min fillet radius (rs) 1 mm
Min fillet radius r1s 0,6 mm
Coefficient f0 8.438
Precision class P4S
Mass 0,256 kg
Brand SNR
Product classification image


Dynamic load (C) 11,1 kN
Static load (C0) 7,7 kN
Fatigue limit load (Cu) 0,46 kN
Axial displacement K Factor 0.62
Preload level 8
Preload value 0,28 kN
Axial rigidity 150 N/µm
Radial rigidity 325 N/µm
Min operating temperature (Tmin) -30 °C
Max operating temperature (Tmax) 120 °C
Nlim (oil) 30000 tr/min
Nlim (grease) 21000 tr/min
Characteristic cage frequency, FTF 0,455 Hz
Characteristic rolling element frequency, BSF 9,965 Hz
Characteristic outer ring frequency, BPF0 11,372 Hz
Characteristic inner ring frequency, BPFI 13,628 Hz


Min shoulder diameter IR (da min) 55,5 mm
Min IR shoulder diameter (db min) 55,5 mm
Max shoulder diameter OR (Da max) 74,5 mm
Max OR shoulder diameter (Db max) 74,5 mm
Maxi fillet radius r1a 0,6 mm
Max shaft & housing fillet radius (ra max) 1 mm
Product classification image
Calcul factors image