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High precision angular contact ball bearings

10R71920CVUJ84 - SNR

10R71920CVUJ84

High precision angular contact ball bearing, 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 diameter100 mm
D - External diameter140 mm
B - Bearing/Inner ring width20 mm
d1 - External diameter inner ring112,8 mm
D1 - Inner diameter outer ring127,2 mm
D2 - Inner diameter outer ring133,36 mm
a - Charge load application point26 mm
α - Contact angle15 °
rs - Min fillet radius0,6 mm
r1s - Min fillet radius0,6 mm
Precision classP4
Mass0,8 kg
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PRODUCT PERFORMANCE
C - Dynamic load51 kN
C0 - Static load56,5 kN
Cu - Fatigue limit load2,75 kN
f0 - Coefficient16.498
Axial displacement K Factor0.93
Preload level8
Preload value0,79 kN
Axial rigidity160 N/µm
Radial rigidity822 N/µm
Tmin - Min operating temperature-30 °C
Tmax - Max operating temperature120 °C
N lim - Oil lubrication limit speed14500 tr/min
N lim - Grease lubrication limit speed9600 tr/min
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)11,302 Hz
BPFI - Over rolling frequency on inner (60 rpm)13,698 Hz
BSF - Over rolling frequency on rolling element (60 rpm)9,986 Hz
BRF - Rotational frequency – rolling element (60 rpm)4,993 Hz
FTF - Rotational frequency - cage (60 rpm)0,452 Hz
ABUTMENT
da min - Min shoulder diameter IR104,5 mm
db min - Min IR shoulder diameter104,5 mm
Da max - Max shoulder diameter OR135,5 mm
Db max - Max OR shoulder diameter135,5 mm
r1a - Max fillet radius0,6 mm
ra max - Max shaft & housing fillet radius0,6 mm
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