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Single row tapered roller bearings

32304.A - SNR

32304.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 diameter20 mm
D - External diameter52 mm
B - Bearing/Inner ring width21 mm
C - Outer ring width18 mm
T - Total width22,25 mm
d1 - External diameter inner ring34,8 mm
a - Charge load application point13,6 mm
rs - Min fillet radius1,5 mm
r1s - Min fillet radius1,5 mm
Mass0,23 kg
ISO 355 referenceT2FD020
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PRODUCT PERFORMANCE
C - Dynamic load47 kN
A2 - Rating life coefficient1
C0 - Static load46,6 kN
Cu - Fatigue limit load5,7 kN
e - Coefficient0.3
Y0 - Static axial load coefficient1.1
Y2 - Upper axial load coefficient2
N ref - Reference thermal speed9300 tr/min
N lim - Mechanical Limit Speed15000 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)5,123 Hz
BPFI - Over rolling frequency on inner (60 rpm)7,877 Hz
BSF - Over rolling frequency on rolling element (60 rpm)4,42 Hz
BRF - Rotational frequency – rolling element (60 rpm)2,21 Hz
FTF - Rotational frequency - cage (60 rpm)0,394 Hz
ABUTMENT
da max - Max shoulder diameter IR27 mm
db min - Min IR shoulder diameter28,5 mm
Da min - Min shoulder diameter OR43 mm
Da max - Max shoulder diameter OR43,5 mm
Db min - Min OR shoulder diameter47 mm
Ca - Min clearance3 mm
Cb - Min clearance4 mm
ra max - Max fillet radius1,5 mm
r1a - Max fillet radius1,5 mm
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