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Single row tapered roller bearings

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.

Documentation

Product information

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 load22,7 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
N ref - Reference thermal speed9700 tr/min
N lim - Mechanical Limit Speed19000 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)6,157 Hz
BPFI - Over rolling frequency on inner (60 rpm)8,843 Hz
BSF - Over rolling frequency on rolling element (60 rpm)5,266 Hz
BRF - Rotational frequency – rolling element (60 rpm)2,633 Hz
FTF - Rotational frequency - cage (60 rpm)0,41 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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