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4T-2580/2523 - NTN

4T-2580/2523

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 diameter31,75 mm
D - External diameter69,85 mm
B - Bearing/Inner ring width25,357 mm
C - Outer ring width19,05 mm
T - Total width23,812 mm
d1 - External diameter inner ring49 mm
a - Charge load application point14,712 mm
Mass0,455 kg
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PRODUCT PERFORMANCE
C - Dynamic load76,5 kN
C0 - Static load81,5 kN
Cu - Fatigue limit load9,9 kN
A2 - Rating life coefficient1
e - Coefficient0.27
Y0 - Static axial load coefficient1.21
Y2 - Upper axial load coefficient2.19
N lim - Oil lubrication limit speed7600 tr/min
N lim - Grease lubrication limit speed5700 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR37,5 mm
db min - Min IR shoulder diameter38,5 mm
Da max - Max shoulder diameter OR61 mm
Db min - Min OR shoulder diameter64 mm
ra max - Max fillet radius0,8 mm
r1a - Max fillet radius1,3 mm
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