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7002HVUJ74 - SNR

7002HVUJ74

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

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Technical datasheet

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PRODUCT DEFINITION
BrandSNR
d - Internal diameter15 mm
D - External diameter32 mm
B - Bearing/Inner ring width9 mm
d1 - External diameter inner ring20,15 mm
D1 - Inner diameter outer ring26,9 mm
D2 - Inner diameter outer ring28,84 mm
a - Charge load application point10 mm
α - Contact angle25 °
rs - Min fillet radius0,3 mm
r1s - Min fillet radius0,3 mm
Precision classP4
Mass0,028 kg
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PRODUCT PERFORMANCE
C - Dynamic load6,3 kN
C0 - Static load3,6 kN
Cu - Fatigue limit load0,21 kN
f0 - Coefficient13.549
Axial displacement K Factor0.97
Preload level7
Preload value0,055 kN
Axial rigidity56 N/µm
Radial rigidity120 N/µm
Tmin - Min operating temperature-30 °C
Tmax - Max operating temperature120 °C
Nlim - Oil lubrication limit speed68000 tr/min
Nlim - Grease lubrication limit speed45000 tr/min
BEARING FREQUENCIES
BPFO - Characteristic outer ring frequency (60 rpm)5,306 Hz
BPFI - Characteristic inner ring frequency (60 rpm)7,694 Hz
FTF - Characteristic cage frequency (60 rpm)0,408 Hz
BSF - Characteristic rolling element frequency (60 rpm)4,768 Hz
ABUTMENT
da min - Min shoulder diameter IR17,5 mm
db min - Min IR shoulder diameter17,5 mm
Da max - Max shoulder diameter OR29,5 mm
Db max - Max OR shoulder diameter29,5 mm
r1a - Max fillet radius0,3 mm
ra max - Max shaft & housing fillet radius0,3 mm
Product classification image
Calcul factors image

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