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High precision angular contact ball bearings

7003CVUJ74 - SNR

7003CVUJ74

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 diameter17 mm
D - External diameter35 mm
B - Bearing/Inner ring width10 mm
d1 - External diameter inner ring22,65 mm
D1 - Inner diameter outer ring29,4 mm
D2 - Inner diameter outer ring31,52 mm
a - Charge load application point8 mm
α - Contact angle15 °
rs - Min fillet radius0,3 mm
r1s - Min fillet radius0,3 mm
Precision classP4
Mass0,037 kg
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PRODUCT PERFORMANCE
C - Dynamic load7 kN
C0 - Static load4,2 kN
Cu - Fatigue limit load0,22 kN
f0 - Coefficient13.696
Axial displacement K Factor1.98
Preload level7
Preload value0,035 kN
Axial rigidity25 N/µm
Radial rigidity143 N/µm
Tmin - Min operating temperature-30 °C
Tmax - Max operating temperature120 °C
N lim - Oil lubrication limit speed67000 tr/min
N lim - Grease lubrication limit speed44000 tr/min
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)5,762 Hz
BPFI - Over rolling frequency on inner (60 rpm)8,238 Hz
BSF - Over rolling frequency on rolling element (60 rpm)5,289 Hz
BRF - Rotational frequency – rolling element (60 rpm)2,645 Hz
FTF - Rotational frequency - cage (60 rpm)0,412 Hz
ABUTMENT
da min - Min shoulder diameter IR19,5 mm
db min - Min IR shoulder diameter19,5 mm
Da max - Max shoulder diameter OR32,5 mm
Db max - Max OR shoulder diameter32,5 mm
r1a - Max fillet radius0,3 mm
ra max - Max shaft & housing fillet radius0,3 mm
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