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High precision angular contact ball bearings

7007CVDUJ74 - SNR

7007CVDUJ74

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 diameter35 mm
D - External diameter62 mm
B - Bearing/Inner ring width14 mm
d1 - External diameter inner ring43,2 mm
D1 - Inner diameter outer ring53,1 mm
D2 - Inner diameter outer ring57,98 mm
a - Charge load application point13 mm
α - Contact angle15 °
rs - Min fillet radius1,5 mm
r1s - Min fillet radius1 mm
Precision classP4
Mass0,15 kg
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PRODUCT PERFORMANCE
C - Dynamic load19,9 kN
C0 - Static load14,6 kN
Cu - Fatigue limit load0,66 kN
f0 - Coefficient15
Axial displacement K Factor1.43
Preload level7
Preload value0,1 kN
Axial rigidity49 N/µm
Radial rigidity278 N/µm
Tmin - Min operating temperature-30 °C
Tmax - Max operating temperature120 °C
N lim - Oil lubrication limit speed36000 tr/min
N lim - Grease lubrication limit speed24000 tr/min
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)6,735 Hz
BPFI - Over rolling frequency on inner (60 rpm)9,265 Hz
BSF - Over rolling frequency on rolling element (60 rpm)5,957 Hz
BRF - Rotational frequency – rolling element (60 rpm)2,979 Hz
FTF - Rotational frequency - cage (60 rpm)0,421 Hz
ABUTMENT
da min - Min shoulder diameter IR40,5 mm
db min - Min IR shoulder diameter40,5 mm
Da max - Max shoulder diameter OR56,5 mm
Db max - Max OR shoulder diameter56,5 mm
r1a - Max fillet radius1 mm
ra max - Max shaft & housing fillet radius1,5 mm
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