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High precision angular contact ball bearings

7013HVUJ84 - SNR

7013HVUJ84

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 diameter65 mm
D - External diameter100 mm
B - Bearing/Inner ring width18 mm
d1 - External diameter inner ring76,9 mm
D1 - Inner diameter outer ring88,2 mm
D2 - Inner diameter outer ring92,82 mm
a - Charge load application point28 mm
α - Contact angle25 °
rs - Min fillet radius1,1 mm
r1s - Min fillet radius1 mm
Precision classP4
Mass0,44 kg
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PRODUCT PERFORMANCE
C - Dynamic load31,6 kN
C0 - Static load30,8 kN
Cu - Fatigue limit load1,74 kN
f0 - Coefficient16.288
Axial displacement K Factor0.49
Preload level8
Preload value0,825 kN
Axial rigidity284 N/µm
Radial rigidity568 N/µm
Tmin - Min operating temperature-30 °C
Tmax - Max operating temperature120 °C
N lim - Oil lubrication limit speed19500 tr/min
N lim - Grease lubrication limit speed12500 tr/min
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)10,296 Hz
BPFI - Over rolling frequency on inner (60 rpm)12,704 Hz
BSF - Over rolling frequency on rolling element (60 rpm)8,564 Hz
BRF - Rotational frequency – rolling element (60 rpm)4,282 Hz
FTF - Rotational frequency - cage (60 rpm)0,448 Hz
ABUTMENT
da min - Min shoulder diameter IR72 mm
db min - Min IR shoulder diameter72 mm
Da max - Max shoulder diameter OR93 mm
Db max - Max OR shoulder diameter93 mm
r1a - Max fillet radius1 mm
ra max - Max shaft & housing fillet radius1 mm
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