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4T-25877/25820 - NTN

4T-25877/25820

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 diameter34,925 mm
D - External diameter73,025 mm
B - Bearing/Inner ring width24,608 mm
C - Outer ring width19,05 mm
T - Total width23,812 mm
d1 - External diameter inner ring53 mm
a - Charge load application point15,712 mm
Mass0,47 kg
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PRODUCT PERFORMANCE
C - Dynamic load78,5 kN
C0 - Static load85 kN
Cu - Fatigue limit load10,4 kN
A2 - Rating life coefficient1
e - Coefficient0.29
Y0 - Static axial load coefficient1.14
Y2 - Upper axial load coefficient2.07
N lim - Oil lubrication limit speed7100 tr/min
N lim - Grease lubrication limit speed5300 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR40,5 mm
db min - Min IR shoulder diameter43 mm
Da max - Max shoulder diameter OR64 mm
Db min - Min OR shoulder diameter68 mm
ra max - Max fillet radius1,5 mm
r1a - Max fillet radius2,3 mm
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