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Single row tapered roller bearings

32307.A - SNR

32307.A

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 width31 mm
C - Outer ring width25 mm
T - Total width32,75 mm
d1 - External diameter inner ring55,3 mm
a - Charge load application point20,5 mm
rs - Min fillet radius2 mm
r1s - Min fillet radius1,5 mm
Mass0,764 kg
ISO 355 referenceT2FE035
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PRODUCT PERFORMANCE
C - Dynamic load109 kN
A2 - Rating life coefficient1
C0 - Static load119 kN
Cu - Fatigue limit load14,5 kN
e - Coefficient0.32
Y0 - Static axial load coefficient1.05
Y2 - Upper axial load coefficient1.9
N ref - Reference thermal speed6300 tr/min
N lim - Mechanical Limit Speed9300 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)5,601 Hz
BPFI - Over rolling frequency on inner (60 rpm)8,399 Hz
BSF - Over rolling frequency on rolling element (60 rpm)4,703 Hz
BRF - Rotational frequency – rolling element (60 rpm)2,352 Hz
FTF - Rotational frequency - cage (60 rpm)0,4 Hz
ABUTMENT
da max - Max shoulder diameter IR43 mm
db min - Min IR shoulder diameter45 mm
Da min - Min shoulder diameter OR66 mm
Da max - Max shoulder diameter OR71,5 mm
Db min - Min OR shoulder diameter74 mm
Ca - Min clearance3 mm
Cb - Min clearance7,5 mm
ra max - Max fillet radius2 mm
r1a - Max fillet radius1,5 mm
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