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Double row angular contact ball bearings

3305A - SNR

3305A

Double row angular contact ball bearing, polyamide cage, open

Documentation

Product information

PRODUCT DEFINITION
BrandSNR
d - Internal diameter25 mm
D - External diameter62 mm
B - Bearing/Inner ring width25,4 mm
d1 - External diameter inner ring36,4 mm
D1 - Inner diameter outer ring55 mm
a - Charge load application point30,9 mm
α - Contact angle25 °
rs - Min fillet radius1,1 mm
Radial clearance classCN
Precision classP0
Mass0,334 kg
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PRODUCT PERFORMANCE
C - Dynamic load31,2 kN
C0 - Static load21 kN
Cu - Fatigue limit load1,32 kN
f0 - Coefficient13.6
N ref - Reference thermal speed7800 tr/min
N lim - Mechanical Limit Speed11000 tr/min
Tmin - Min operating temperature-20 °C
Tmax - Max operating temperature120 °C
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)3,14 Hz
BPFI - Over rolling frequency on inner (60 rpm)4,86 Hz
BSF - Over rolling frequency on rolling element (60 rpm)4,021 Hz
BRF - Rotational frequency – rolling element (60 rpm)2,011 Hz
FTF - Rotational frequency - cage (60 rpm)0,393 Hz
ABUTMENT
da min - Min shoulder diameter IR31,5 mm
Da max - Max shoulder diameter OR55,5 mm
ra max - Max shaft & housing fillet radius1 mm
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