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Single row tapered roller bearings

4T-30314D - NTN

4T-30314D

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 diameter70 mm
D - External diameter150 mm
B - Bearing/Inner ring width35 mm
C - Outer ring width25 mm
T - Total width38 mm
d1 - External diameter inner ring110,5 mm
a - Charge load application point47 mm
rs - Min fillet radius3 mm
r1s - Min fillet radius2,5 mm
Mass2,92 kg
ISO 355 referenceT7GB070
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PRODUCT PERFORMANCE
C - Dynamic load214 kN
C0 - Static load229 kN
Cu - Fatigue limit load27,2 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 speed3000 tr/min
N lim - Grease lubrication limit speed2300 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR84 mm
db min - Min IR shoulder diameter84 mm
Da min - Min shoulder diameter OR118 mm
Da max - Max shoulder diameter OR138 mm
Db min - Min OR shoulder diameter142 mm
Ca - Min clearance4 mm
Cb - Min clearance13 mm
ra max - Max fillet radius2,5 mm
r1a - Max fillet radius2 mm
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