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Single row tapered roller bearings

4T-3188/3120 - NTN

4T-3188/3120

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 diameter72,626 mm
B - Bearing/Inner ring width29,997 mm
C - Outer ring width23,812 mm
T - Total width30,162 mm
d1 - External diameter inner ring51 mm
a - Charge load application point20,262 mm
Mass0,606 kg
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PRODUCT PERFORMANCE
C - Dynamic load93,5 kN
C0 - Static load98 kN
Cu - Fatigue limit load12 kN
A2 - Rating life coefficient1
e - Coefficient0.33
Y0 - Static axial load coefficient0.99
Y2 - Upper axial load coefficient1.8
N lim - Oil lubrication limit speed7300 tr/min
N lim - Grease lubrication limit speed5500 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR39,5 mm
db min - Min IR shoulder diameter40 mm
Da max - Max shoulder diameter OR61 mm
Db min - Min OR shoulder diameter67 mm
ra max - Max fillet radius0,8 mm
r1a - Max fillet radius3,3 mm
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