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30306A - SNR

30306A

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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Specs

PRODUCT DEFINITION

d - Internal diameter 30 mm
D - External diameter 72 mm
B - Bearing/Inner ring width 19 mm
C - Outer ring width 16 mm
T - Total width 20,75 mm
d1 - External diameter inner ring 49,2 mm
a - Charge load application point 15,4 mm
rs - Min fillet radius 1,5 mm
r1s - Min fillet radius 1,5 mm
Mass 0,387 kg
ISO 355 reference T2FB030
Brand SNR
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PRODUCT PERFORMANCE

C - Dynamic load 62,1 kN
A2 - Rating life coefficient 1
C0 - Static load 63,6 kN
Cu - Fatigue limit load 7,8 kN
e - Coefficient 0.32
Y0 - Static axial load coefficient 1.05
Y2 - Upper axial load coefficient 1.9
Nref - Reference thermal speed 7100 tr/min
Nlim - Mechanical Limit Speed 11000 tr/min
Tmin - Min operating temperature -40 °C
Tmax - Max operating temperature 120 °C
FTF - Characteristic cage frequency 0,4 Hz
BSF - Characteristic rolling element frequency 4,713 Hz
BPFO - Characteristic outer ring frequency 5,604 Hz
BPFI - Characteristic inner ring frequency 8,396 Hz

ABUTMENT

da max - Max shoulder diameter IR 40 mm
db min - Min IR shoulder diameter 38,5 mm
Da min - Min shoulder diameter OR 62 mm
Da max - Max shoulder diameter OR 63,5 mm
Db min - Min OR shoulder diameter 66 mm
Ca - Min clearance 3 mm
Cb - Min clearance 4,5 mm
ra max - Max fillet radius 1,5 mm
r1a - Max fillet radius 1,5 mm
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