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Single row tapered roller bearings

4T-HM88649/HM88610 - NTN

4T-HM88649/HM88610

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 diameter34,925 mm
D - External diameter72,233 mm
B - Bearing/Inner ring width25,4 mm
C - Outer ring width19,842 mm
T - Total width25,4 mm
d1 - External diameter inner ring56 mm
a - Charge load application point20,8 mm
Mass0,489 kg
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PRODUCT PERFORMANCE
C - Dynamic load72 kN
C0 - Static load84,5 kN
Cu - Fatigue limit load10,3 kN
A2 - Rating life coefficient1
e - Coefficient0.55
Y0 - Static axial load coefficient0.6
Y2 - Upper axial load coefficient1.1
N lim - Oil lubrication limit speed7200 tr/min
N lim - Grease lubrication limit speed5400 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR42,5 mm
db min - Min IR shoulder diameter48,5 mm
Da max - Max shoulder diameter OR60 mm
Db min - Min OR shoulder diameter69 mm
ra max - Max fillet radius2,3 mm
r1a - Max fillet radius2,3 mm
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