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Single row tapered roller bearings

4T-JM612949/JM612910PK - NTN

4T-JM612949/JM612910PK

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 diameter70 mm
D - External diameter115 mm
B - Bearing/Inner ring width29 mm
C - Outer ring width23 mm
T - Total width29 mm
a - Charge load application point26,4 mm
rs - Min fillet radius3 mm
r1s - Min fillet radius2,5 mm
Mass1,12 kg
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PRODUCT PERFORMANCE
C - Dynamic load138 kN
C0 - Static load171 kN
A2 - Rating life coefficient1
e - Coefficient0.43
Y0 - Static axial load coefficient0.77
Y2 - Upper axial load coefficient1.39
N lim - Oil lubrication limit speed4100 tr/min
N lim - Grease lubrication limit speed3100 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR77 mm
db min - Min IR shoulder diameter83 mm
Da max - Max shoulder diameter OR110 mm
Db min - Min OR shoulder diameter103 mm
ra max - Max fillet radius3 mm
r1a - Max fillet radius2,5 mm
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OE Equivalents

ManufacturerReferenceZF0750.117.347

Industry Calcul Factors

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