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4T-320/28X - NTN

4T-320/28X

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 diameter28 mm
D - External diameter52 mm
B - Bearing/Inner ring width16 mm
C - Outer ring width12 mm
T - Total width16 mm
d1 - External diameter inner ring40,5 mm
a - Charge load application point12,5 mm
rs - Min fillet radius1 mm
r1s - Min fillet radius1 mm
Mass0,146 kg
ISO 355 referenceT4CC028
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PRODUCT PERFORMANCE
C - Dynamic load37 kN
C0 - Static load40,5 kN
Cu - Fatigue limit load4,95 kN
A2 - Rating life coefficient1
e - Coefficient0.43
Y0 - Static axial load coefficient0.77
Y2 - Upper axial load coefficient1.39
N lim - Oil lubrication limit speed9700 tr/min
N lim - Grease lubrication limit speed7300 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR33 mm
db min - Min IR shoulder diameter33,5 mm
Da min - Min shoulder diameter OR45 mm
Da max - Max shoulder diameter OR46,5 mm
Db min - Min OR shoulder diameter49 mm
Ca - Min clearance3 mm
Cb - Min clearance4 mm
ra max - Max fillet radius1 mm
r1a - Max fillet radius1 mm
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