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4T-21075/21212 - NTN

4T-21075/21212

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 diameter19,05 mm
D - External diameter53,975 mm
B - Bearing/Inner ring width21,839 mm
C - Outer ring width15,875 mm
T - Total width22,225 mm
d1 - External diameter inner ring36,2 mm
a - Charge load application point16,625 mm
rs - Min fillet radius1,5 mm
r1s - Min fillet radius2,3 mm
Mass0,248 kg
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PRODUCT PERFORMANCE
C - Dynamic load44,5 kN
C0 - Static load39 kN
Cu - Fatigue limit load4,75 kN
A2 - Rating life coefficient1
e - Coefficient0.59
Y0 - Static axial load coefficient0.56
Y2 - Upper axial load coefficient1.02
N lim - Oil lubrication limit speed11000 tr/min
N lim - Grease lubrication limit speed8000 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR26 mm
db min - Min IR shoulder diameter31,5 mm
Da max - Max shoulder diameter OR43 mm
Db min - Min OR shoulder diameter50 mm
ra max - Max fillet radius1,5 mm
r1a - Max fillet radius2,3 mm
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