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Single row tapered roller bearings

30321U - NTN

30321U

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 diameter105 mm
D - External diameter225 mm
B - Bearing/Inner ring width49 mm
C - Outer ring width41 mm
T - Total width53,5 mm
a - Charge load application point43,5 mm
rs - Min fillet radius3 mm
r1s - Min fillet radius2,5 mm
Mass9,37 kg
ISO 355 referenceT2GB105
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PRODUCT PERFORMANCE
C - Dynamic load485 kN
C0 - Static load535 kN
Cu - Fatigue limit load56 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 speed2300 tr/min
N lim - Grease lubrication limit speed1700 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR123 mm
db min - Min IR shoulder diameter132 mm
Da max - Max shoulder diameter OR211 mm
Db min - Min OR shoulder diameter209 mm
ra max - Max fillet radius3 mm
r1a - Max fillet radius2,5 mm
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