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Single row tapered roller bearings

4T-6277/6220 - NTN

4T-6277/6220

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 diameter44,45 mm
D - External diameter127 mm
B - Bearing/Inner ring width52,388 mm
C - Outer ring width41,275 mm
T - Total width50,8 mm
d1 - External diameter inner ring88 mm
a - Charge load application point31,3 mm
Mass3,59 kg
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PRODUCT PERFORMANCE
C - Dynamic load277 kN
C0 - Static load320 kN
Cu - Fatigue limit load39 kN
A2 - Rating life coefficient1
e - Coefficient0.3
Y0 - Static axial load coefficient1.11
Y2 - Upper axial load coefficient2.01
N lim - Oil lubrication limit speed4300 tr/min
N lim - Grease lubrication limit speed3200 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR60 mm
db min - Min IR shoulder diameter67 mm
Da max - Max shoulder diameter OR108 mm
Db min - Min OR shoulder diameter117 mm
ra max - Max fillet radius3,5 mm
r1a - Max fillet radius3,3 mm
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