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Single row tapered roller bearings

4T-2687/2631 - NTN

4T-2687/2631

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 diameter25,4 mm
D - External diameter66,421 mm
B - Bearing/Inner ring width25,433 mm
C - Outer ring width19,05 mm
T - Total width23,812 mm
d1 - External diameter inner ring45 mm
a - Charge load application point14,512 mm
Mass0,444 kg
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PRODUCT PERFORMANCE
C - Dynamic load71,5 kN
C0 - Static load72,5 kN
Cu - Fatigue limit load8,8 kN
A2 - Rating life coefficient1
e - Coefficient0.25
Y0 - Static axial load coefficient1.3
Y2 - Upper axial load coefficient2.36
N lim - Oil lubrication limit speed8200 tr/min
N lim - Grease lubrication limit speed6200 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR31,5 mm
db min - Min IR shoulder diameter33,5 mm
Da max - Max shoulder diameter OR58 mm
Db min - Min OR shoulder diameter60 mm
ra max - Max fillet radius1,3 mm
r1a - Max fillet radius1,3 mm
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