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Single row tapered roller bearings

30318DU - NTN

30318DU

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 width30 mm
T - Total width46,5 mm
d1 - External diameter inner ring140 mm
a - Charge load application point59 mm
rs - Min fillet radius4 mm
r1s - Min fillet radius3 mm
Mass5,58 kg
ISO 355 referenceT7GB090
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PRODUCT PERFORMANCE
C - Dynamic load300 kN
C0 - Static load320 kN
Cu - Fatigue limit load35,5 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 speed2400 tr/min
N lim - Grease lubrication limit speed1800 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR109 mm
db min - Min IR shoulder diameter108 mm
Da min - Min shoulder diameter OR151 mm
Da max - Max shoulder diameter OR176 mm
Db min - Min OR shoulder diameter179 mm
Ca - Min clearance6 mm
Cb - Min clearance16,5 mm
ra max - Max fillet radius3 mm
r1a - Max fillet radius2,5 mm
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