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4T-30204 - NTN

4T-30204

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 diameter20 mm
D - External diameter47 mm
B - Bearing/Inner ring width14 mm
C - Outer ring width12 mm
T - Total width15,25 mm
d1 - External diameter inner ring33,5 mm
a - Charge load application point11,5 mm
rs - Min fillet radius1 mm
r1s - Min fillet radius1 mm
Mass0,124 kg
ISO 355 referenceT2DB020
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PRODUCT PERFORMANCE
C - Dynamic load31 kN
C0 - Static load28,7 kN
Cu - Fatigue limit load3,5 kN
A2 - Rating life coefficient1
e - Coefficient0.35
Y0 - Static axial load coefficient0.96
Y2 - Upper axial load coefficient1.74
N lim - Oil lubrication limit speed12000 tr/min
N lim - Grease lubrication limit speed8800 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR27 mm
db min - Min IR shoulder diameter25,5 mm
Da min - Min shoulder diameter OR40 mm
Da max - Max shoulder diameter OR41,5 mm
Db min - Min OR shoulder diameter44 mm
Ca - Min clearance2 mm
Cb - Min clearance3 mm
ra max - Max fillet radius1 mm
r1a - Max fillet radius1 mm
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