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High precision angular contact ball bearings

MLE71900CVUJ74S - SNR

MLE71900CVUJ74S

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 is getting sub-ranges dedicated to requirements of speed, sealing, specific greasing, etc.

Documentation

Product information

PRODUCT DEFINITION
BrandSNR
d - Internal diameter10 mm
D - External diameter22 mm
B - Bearing/Inner ring width6 mm
d1 - External diameter inner ring13,6 mm
d2 - External diameter inner ring12,7 mm
D1 - Inner diameter outer ring18,25 mm
D2 - Inner diameter outer ring18,95 mm
a - Charge load application point5 mm
α - Contact angle17 °
rs - Min fillet radius0,3 mm
r1s - Min fillet radius0,3 mm
Precision classP4S
Mass0,01 kg
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PRODUCT PERFORMANCE
C - Dynamic load1,41 kN
C0 - Static load0,59 kN
Cu - Fatigue limit load0,03 kN
f0 - Coefficient7.742
Axial displacement K Factor2.33
Preload level7
Preload value0,007 kN
Axial rigidity12 N/µm
Radial rigidity58 N/µm
Tmin - Min operating temperature-20 °C
Tmax - Max operating temperature120 °C
N lim - Grease lubrication limit speed100000 tr/min
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)5,965 Hz
BPFI - Over rolling frequency on inner (60 rpm)8,035 Hz
BSF - Over rolling frequency on rolling element (60 rpm)6,326 Hz
BRF - Rotational frequency – rolling element (60 rpm)3,163 Hz
FTF - Rotational frequency - cage (60 rpm)0,426 Hz
ABUTMENT
da min - Min shoulder diameter IR12,5 mm
db min - Min IR shoulder diameter12,5 mm
Da max - Max shoulder diameter OR19,5 mm
Db max - Max OR shoulder diameter19,5 mm
r1a - Max fillet radius0,3 mm
ra max - Max shaft & housing fillet radius0,3 mm
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