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High precision angular contact ball bearings

7001CVUJ74 - SNR

7001CVUJ74

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 diameter12 mm
D - External diameter28 mm
B - Bearing/Inner ring width8 mm
d1 - External diameter inner ring16,65 mm
D1 - Inner diameter outer ring23,4 mm
D2 - Inner diameter outer ring25,72 mm
a - Charge load application point7 mm
α - Contact angle15 °
rs - Min fillet radius0,3 mm
r1s - Min fillet radius0,3 mm
Precision classP4
Mass0,02 kg
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PRODUCT PERFORMANCE
C - Dynamic load6,1 kN
C0 - Static load3,2 kN
Cu - Fatigue limit load0,15 kN
f0 - Coefficient13.2
Preload level7
Preload value0,03 kN
Tmin - Min operating temperature-30 °C
Tmax - Max operating temperature120 °C
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)4,235 Hz
BPFI - Over rolling frequency on inner (60 rpm)6,765 Hz
BSF - Over rolling frequency on rolling element (60 rpm)3,978 Hz
BRF - Rotational frequency – rolling element (60 rpm)1,989 Hz
FTF - Rotational frequency - cage (60 rpm)0,385 Hz
ABUTMENT
da min - Min shoulder diameter IR14,5 mm
db min - Min IR shoulder diameter14,5 mm
Da max - Max shoulder diameter OR25,5 mm
Db max - Max OR shoulder diameter25,5 mm
r1a - Max fillet radius0,3 mm
ra max - Max shaft & housing fillet radius0,3 mm
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