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Single row tapered roller bearings

4T-26878/26822 - NTN

4T-26878/26822

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 diameter79,375 mm
B - Bearing/Inner ring width25,4 mm
C - Outer ring width19,05 mm
T - Total width23,812 mm
d1 - External diameter inner ring59,5 mm
a - Charge load application point16,412 mm
Mass0,575 kg
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PRODUCT PERFORMANCE
C - Dynamic load85 kN
C0 - Static load97,5 kN
Cu - Fatigue limit load11,9 kN
A2 - Rating life coefficient1
e - Coefficient0.32
Y0 - Static axial load coefficient1.04
Y2 - Upper axial load coefficient1.88
N lim - Oil lubrication limit speed6400 tr/min
N lim - Grease lubrication limit speed4800 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR44,5 mm
db min - Min IR shoulder diameter45 mm
Da max - Max shoulder diameter OR71 mm
Db min - Min OR shoulder diameter74 mm
ra max - Max fillet radius0,8 mm
r1a - Max fillet radius0,8 mm
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