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30203A - SNR

30203A

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.

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Technical datasheet

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PRODUCT DEFINITION
BrandSNR
d - Internal diameter17 mm
D - External diameter40 mm
B - Bearing/Inner ring width12 mm
C - Outer ring width11 mm
T - Total width13,25 mm
d1 - External diameter inner ring28,5 mm
a - Charge load application point9,9 mm
rs - Min fillet radius1 mm
r1s - Min fillet radius1 mm
Mass0,08 kg
ISO 355 referenceT2DB017
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PRODUCT PERFORMANCE
C - Dynamic load21,7 kN
A2 - Rating life coefficient1
C0 - Static load21,9 kN
Cu - Fatigue limit load2,65 kN
e - Coefficient0.35
Y0 - Static axial load coefficient0.96
Y2 - Upper axial load coefficient1.74
Nref - Reference thermal speed9700 tr/min
Nlim - Mechanical Limit Speed19000 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
BEARING FREQUENCIES
BPFO - Characteristic outer ring frequency (60 rpm)6,157 Hz
BPFI - Characteristic inner ring frequency (60 rpm)8,843 Hz
FTF - Characteristic cage frequency (60 rpm)0,41 Hz
BSF - Characteristic rolling element frequency (60 rpm)5,266 Hz
ABUTMENT
da max - Max shoulder diameter IR23 mm
db min - Min IR shoulder diameter23 mm
Da min - Min shoulder diameter OR34 mm
Da max - Max shoulder diameter OR34 mm
Db min - Min OR shoulder diameter37 mm
Ca - Min clearance2 mm
Cb - Min clearance2 mm
ra max - Max fillet radius1 mm
r1a - Max fillet radius1 mm
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