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Double row angular contact ball bearings

3304AC3 - SNR

3304AC3

Double row angular contact ball bearing, polyamide cage, open

Documentation

Product information

PRODUCT DEFINITION
BrandSNR
d - Internal diameter20 mm
D - External diameter52 mm
B - Bearing/Inner ring width22,2 mm
d1 - External diameter inner ring30 mm
D1 - Inner diameter outer ring45 mm
a - Charge load application point26,4 mm
α - Contact angle25 °
rs - Min fillet radius1,1 mm
Radial clearance classC3
Precision classP0
Mass0,208 kg
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PRODUCT PERFORMANCE
C - Dynamic load22,9 kN
C0 - Static load15,1 kN
Cu - Fatigue limit load0,95 kN
f0 - Coefficient13.6
N ref - Reference thermal speed9100 tr/min
N lim - Mechanical Limit Speed13000 tr/min
Tmin - Min operating temperature-20 °C
Tmax - Max operating temperature120 °C
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)3,145 Hz
BPFI - Over rolling frequency on inner (60 rpm)4,855 Hz
BSF - Over rolling frequency on rolling element (60 rpm)4,044 Hz
BRF - Rotational frequency – rolling element (60 rpm)2,022 Hz
FTF - Rotational frequency - cage (60 rpm)0,393 Hz
ABUTMENT
da min - Min shoulder diameter IR26,5 mm
Da max - Max shoulder diameter OR45,5 mm
ra max - Max shaft & housing fillet radius1 mm
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