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Single row tapered roller bearings

4T-30309D - NTN

4T-30309D

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
BrandNTN
d - Internal diameter45 mm
D - External diameter100 mm
B - Bearing/Inner ring width25 mm
C - Outer ring width18 mm
T - Total width27,25 mm
d1 - External diameter inner ring75 mm
a - Charge load application point32,5 mm
rs - Min fillet radius2 mm
r1s - Min fillet radius1,5 mm
Mass0,966 kg
ISO 355 referenceT7FB045
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PRODUCT PERFORMANCE
C - Dynamic load106 kN
C0 - Static load109 kN
Cu - Fatigue limit load13,3 kN
A2 - Rating life coefficient1
e - Coefficient0.83
Y0 - Static axial load coefficient0.4
Y2 - Upper axial load coefficient0.73
N lim - Oil lubrication limit speed4600 tr/min
N lim - Grease lubrication limit speed3500 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR56 mm
db min - Min IR shoulder diameter55 mm
Da min - Min shoulder diameter OR79 mm
Da max - Max shoulder diameter OR91,5 mm
Db min - Min OR shoulder diameter96 mm
Ca - Min clearance3 mm
Cb - Min clearance9 mm
ra max - Max fillet radius2 mm
r1a - Max fillet radius1,5 mm
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