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Single row tapered roller bearings

30318U - NTN

30318U

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 diameter90 mm
D - External diameter190 mm
B - Bearing/Inner ring width43 mm
C - Outer ring width36 mm
T - Total width46,5 mm
d1 - External diameter inner ring135,5 mm
a - Charge load application point37,5 mm
rs - Min fillet radius4 mm
r1s - Min fillet radius3 mm
Mass5,83 kg
ISO 355 referenceT2GB090
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PRODUCT PERFORMANCE
C - Dynamic load375 kN
C0 - Static load405 kN
Cu - Fatigue limit load44,5 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 speed2700 tr/min
N lim - Grease lubrication limit speed2000 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR113 mm
db min - Min IR shoulder diameter108 mm
Da min - Min shoulder diameter OR165 mm
Da max - Max shoulder diameter OR176 mm
Db min - Min OR shoulder diameter177 mm
Ca - Min clearance5 mm
Cb - Min clearance10,5 mm
ra max - Max fillet radius3 mm
r1a - Max fillet radius2,5 mm
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