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30209A - SNR

30209A

Tapered roller bearing, pressed steel cage

The single row tapered roller bearing is available in metric dimensions (ISO 355 and JIS B 1512 standards) and in inches (ABMA standard, metric series including J). The single row in tapered roller bearing range, is the most widely used and is generally mounted in opposition.

Documentation

Product information

PRODUCT DEFINITION
BrandSNR
d - Internal diameter45 mm
D - External diameter85 mm
B - Bearing/Inner ring width19 mm
C - Outer ring width16 mm
T - Total width20,75 mm
d1 - External diameter inner ring63,6 mm
a - Charge load application point18,8 mm
rs - Min fillet radius1,5 mm
r1s - Min fillet radius1,5 mm
Mass0,474 kg
ISO 355 referenceT3DB045
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PRODUCT PERFORMANCE
C - Dynamic load73,9 kN
A2 - Rating life coefficient1
C0 - Static load82,9 kN
Cu - Fatigue limit load10,1 kN
e - Coefficient0.4
Y0 - Static axial load coefficient0.81
Y2 - Upper axial load coefficient1.48
N ref - Reference thermal speed5400 tr/min
N lim - Mechanical Limit Speed8700 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)8,09 Hz
BPFI - Over rolling frequency on inner (60 rpm)10,91 Hz
BSF - Over rolling frequency on rolling element (60 rpm)6,361 Hz
BRF - Rotational frequency – rolling element (60 rpm)3,181 Hz
FTF - Rotational frequency - cage (60 rpm)0,426 Hz
ABUTMENT
da max - Max shoulder diameter IR54 mm
db min - Min IR shoulder diameter53,5 mm
Da min - Min shoulder diameter OR74 mm
Da max - Max shoulder diameter OR78 mm
Db min - Min OR shoulder diameter80 mm
Ca - Min clearance3 mm
Cb - Min clearance4,5 mm
ra max - Max fillet radius1,5 mm
r1a - Max fillet radius1,5 mm
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