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4T-2580/2520 - NTN

4T-2580/2520

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 diameter66,421 mm
B - Bearing/Inner ring width25,357 mm
C - Outer ring width20,638 mm
T - Total width25,4 mm
d1 - External diameter inner ring49 mm
a - Charge load application point16,3 mm
Mass0,41 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 OR57 mm
Db min - Min OR shoulder diameter62 mm
ra max - Max fillet radius0,8 mm
r1a - Max fillet radius3,3 mm
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