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3311A - SNR

3311A

Double row angular contact ball bearing, polyamide cage, open

Documentation

Product information

PRODUCT DEFINITION
BrandSNR
d - Internal diameter55 mm
D - External diameter120 mm
B - Bearing/Inner ring width49,2 mm
d1 - External diameter inner ring75,2 mm
D1 - Inner diameter outer ring98,4 mm
a - Charge load application point61,2 mm
α - Contact angle25 °
rs - Min fillet radius2 mm
Radial clearance classCN
Precision classP0
Mass2,11 kg
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PRODUCT PERFORMANCE
C - Dynamic load98,6 kN
C0 - Static load78,8 kN
Cu - Fatigue limit load4,9 kN
f0 - Coefficient13.8
N ref - Reference thermal speed5000 tr/min
N lim - Mechanical Limit Speed5500 tr/min
Tmin - Min operating temperature-20 °C
Tmax - Max operating temperature120 °C
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)3,173 Hz
BPFI - Over rolling frequency on inner (60 rpm)4,827 Hz
BSF - Over rolling frequency on rolling element (60 rpm)4,197 Hz
BRF - Rotational frequency – rolling element (60 rpm)2,099 Hz
FTF - Rotational frequency - cage (60 rpm)0,397 Hz
ABUTMENT
da min - Min shoulder diameter IR64 mm
Da max - Max shoulder diameter OR111 mm
ra max - Max shaft & housing fillet radius2 mm
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