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4T-2788/2720 - NTN

4T-2788/2720

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.

This kit contains the following reference(s)

Documentation

Product information

PRODUCT DEFINITION
BrandNTN
d - Internal diameter38,1 mm
D - External diameter76,2 mm
B - Bearing/Inner ring width25,654 mm
C - Outer ring width19,05 mm
T - Total width23,812 mm
d1 - External diameter inner ring55 mm
a - Charge load application point16,012 mm
Mass0,494 kg
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PRODUCT PERFORMANCE
C - Dynamic load81 kN
C0 - Static load90,5 kN
Cu - Fatigue limit load11 kN
A2 - Rating life coefficient1
e - Coefficient0.3
Y0 - Static axial load coefficient1.09
Y2 - Upper axial load coefficient1.98
N lim - Oil lubrication limit speed6800 tr/min
N lim - Grease lubrication limit speed5100 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR43,5 mm
db min - Min IR shoulder diameter50 mm
Da max - Max shoulder diameter OR66 mm
Db min - Min OR shoulder diameter70 mm
ra max - Max fillet radius3,5 mm
r1a - Max fillet radius3,3 mm
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