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4T-28158/28300 - NTN

4T-28158/28300

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 diameter40 mm
D - External diameter76,2 mm
B - Bearing/Inner ring width20,94 mm
C - Outer ring width15,507 mm
T - Total width20,638 mm
d1 - External diameter inner ring56 mm
a - Charge load application point15,838 mm
Mass0,387 kg
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PRODUCT PERFORMANCE
C - Dynamic load61,5 kN
C0 - Static load63 kN
Cu - Fatigue limit load7,7 kN
A2 - Rating life coefficient1
e - Coefficient0.4
Y0 - Static axial load coefficient0.82
Y2 - Upper axial load coefficient1.49
N lim - Oil lubrication limit speed6700 tr/min
N lim - Grease lubrication limit speed5000 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR45 mm
db min - Min IR shoulder diameter47,5 mm
Da max - Max shoulder diameter OR68 mm
Db min - Min OR shoulder diameter71 mm
ra max - Max fillet radius1,5 mm
r1a - Max fillet radius1,3 mm
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