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Single row tapered roller bearings

4T-28580/28521 - NTN

4T-28580/28521

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 diameter50,8 mm
D - External diameter92,075 mm
B - Bearing/Inner ring width25,4 mm
C - Outer ring width19,845 mm
T - Total width24,608 mm
d1 - External diameter inner ring72 mm
a - Charge load application point20,008 mm
Mass0,703 kg
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PRODUCT PERFORMANCE
C - Dynamic load93 kN
C0 - Static load116 kN
Cu - Fatigue limit load14,1 kN
A2 - Rating life coefficient1
e - Coefficient0.38
Y0 - Static axial load coefficient0.87
Y2 - Upper axial load coefficient1.59
N lim - Oil lubrication limit speed5300 tr/min
N lim - Grease lubrication limit speed4000 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR57 mm
db min - Min IR shoulder diameter63 mm
Da max - Max shoulder diameter OR83 mm
Db min - Min OR shoulder diameter87 mm
ra max - Max fillet radius3,5 mm
r1a - Max fillet radius0,8 mm
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