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Single row tapered roller bearings

30307A - SNR

30307A

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 diameter35 mm
D - External diameter80 mm
B - Bearing/Inner ring width21 mm
C - Outer ring width18 mm
T - Total width22,75 mm
d1 - External diameter inner ring55,3 mm
a - Charge load application point17 mm
rs - Min fillet radius2 mm
r1s - Min fillet radius1,5 mm
Mass0,518 kg
ISO 355 referenceT2FB035
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PRODUCT PERFORMANCE
C - Dynamic load82,4 kN
A2 - Rating life coefficient1
C0 - Static load82,6 kN
Cu - Fatigue limit load10,1 kN
e - Coefficient0.31
Y0 - Static axial load coefficient1.05
Y2 - Upper axial load coefficient1.9
N ref - Reference thermal speed6400 tr/min
N lim - Mechanical Limit Speed9500 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)5,604 Hz
BPFI - Over rolling frequency on inner (60 rpm)8,396 Hz
BSF - Over rolling frequency on rolling element (60 rpm)4,713 Hz
BRF - Rotational frequency – rolling element (60 rpm)2,357 Hz
FTF - Rotational frequency - cage (60 rpm)0,4 Hz
ABUTMENT
da max - Max shoulder diameter IR45 mm
db min - Min IR shoulder diameter45 mm
Da min - Min shoulder diameter OR70 mm
Da max - Max shoulder diameter OR71,5 mm
Db min - Min OR shoulder diameter74 mm
Ca - Min clearance3 mm
Cb - Min clearance4,5 mm
ra max - Max fillet radius2 mm
r1a - Max fillet radius1,5 mm
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