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4T-30312D - NTN

4T-30312D

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 diameter60 mm
D - External diameter130 mm
B - Bearing/Inner ring width31 mm
C - Outer ring width22 mm
T - Total width33,5 mm
d1 - External diameter inner ring96 mm
a - Charge load application point40,5 mm
rs - Min fillet radius3 mm
r1s - Min fillet radius2,5 mm
Mass1,95 kg
ISO 355 referenceT7FB060
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PRODUCT PERFORMANCE
C - Dynamic load167 kN
C0 - Static load176 kN
Cu - Fatigue limit load21,5 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 speed3600 tr/min
N lim - Grease lubrication limit speed2700 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR73 mm
db min - Min IR shoulder diameter74 mm
Da min - Min shoulder diameter OR103 mm
Da max - Max shoulder diameter OR118 mm
Db min - Min OR shoulder diameter124 mm
Ca - Min clearance4 mm
Cb - Min clearance11,5 mm
ra max - Max fillet radius2,5 mm
r1a - Max fillet radius2 mm
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