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30212A - SNR

30212A

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 diameter60 mm
D - External diameter110 mm
B - Bearing/Inner ring width22 mm
C - Outer ring width19 mm
T - Total width23,75 mm
d1 - External diameter inner ring81,6 mm
a - Charge load application point22,3 mm
rs - Min fillet radius2 mm
r1s - Min fillet radius1,5 mm
Mass0,904 kg
ISO 355 referenceT3EB060
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PRODUCT PERFORMANCE
C - Dynamic load113 kN
A2 - Rating life coefficient1
C0 - Static load130 kN
Cu - Fatigue limit load15,9 kN
e - Coefficient0.4
Y0 - Static axial load coefficient0.81
Y2 - Upper axial load coefficient1.48
N ref - Reference thermal speed4100 tr/min
N lim - Mechanical Limit Speed6700 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)8,085 Hz
BPFI - Over rolling frequency on inner (60 rpm)10,915 Hz
BSF - Over rolling frequency on rolling element (60 rpm)6,338 Hz
BRF - Rotational frequency – rolling element (60 rpm)3,169 Hz
FTF - Rotational frequency - cage (60 rpm)0,426 Hz
ABUTMENT
da max - Max shoulder diameter IR70 mm
db min - Min IR shoulder diameter70 mm
Da min - Min shoulder diameter OR96 mm
Da max - Max shoulder diameter OR101,5 mm
Db min - Min OR shoulder diameter103 mm
Ca - Min clearance4 mm
Cb - Min clearance4,5 mm
ra max - Max fillet radius2 mm
r1a - Max fillet radius1,5 mm
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