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Single row tapered roller bearings

4T-12175/12303 - NTN

4T-12175/12303

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 diameter44,45 mm
D - External diameter76,992 mm
B - Bearing/Inner ring width17,145 mm
C - Outer ring width11,908 mm
T - Total width17,462 mm
d1 - External diameter inner ring61 mm
a - Charge load application point17,662 mm
Mass0,308 kg
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PRODUCT PERFORMANCE
C - Dynamic load48,5 kN
C0 - Static load54 kN
Cu - Fatigue limit load6,6 kN
A2 - Rating life coefficient1
e - Coefficient0.51
Y0 - Static axial load coefficient0.65
Y2 - Upper axial load coefficient1.19
N lim - Oil lubrication limit speed6300 tr/min
N lim - Grease lubrication limit speed4700 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR49,5 mm
db min - Min IR shoulder diameter52 mm
Da max - Max shoulder diameter OR68 mm
Db min - Min OR shoulder diameter73 mm
ra max - Max fillet radius1,5 mm
r1a - Max fillet radius1,5 mm
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