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High precision angular contact ball bearings

7019CVUJ84 - SNR

7019CVUJ84

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 diameter95 mm
D - External diameter145 mm
B - Bearing/Inner ring width24 mm
d1 - External diameter inner ring110,8 mm
D1 - Inner diameter outer ring129,2 mm
D2 - Inner diameter outer ring136,61 mm
a - Charge load application point28 mm
α - Contact angle15 °
rs - Min fillet radius1,5 mm
r1s - Min fillet radius0,6 mm
Precision classP4
Mass1,2 kg
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PRODUCT PERFORMANCE
C - Dynamic load73,5 kN
C0 - Static load73,3 kN
Cu - Fatigue limit load3,55 kN
f0 - Coefficient15.878
Axial displacement K Factor0.93
Preload level8
Preload value1,16 kN
Axial rigidity185 N/µm
Radial rigidity916 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)9,225 Hz
BPFI - Over rolling frequency on inner (60 rpm)11,775 Hz
BSF - Over rolling frequency on rolling element (60 rpm)7,84 Hz
BRF - Rotational frequency – rolling element (60 rpm)3,92 Hz
FTF - Rotational frequency - cage (60 rpm)0,439 Hz
ABUTMENT
da min - Min shoulder diameter IR103,5 mm
db min - Min IR shoulder diameter103,5 mm
Da max - Max shoulder diameter OR136,5 mm
Db max - Max OR shoulder diameter136,5 mm
r1a - Max fillet radius0,6 mm
ra max - Max shaft & housing fillet radius1,5 mm
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