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Single row tapered roller bearings

4T-HM89249/HM89210 - NTN

4T-HM89249/HM89210

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.

Documentation

Product information

PRODUCT DEFINITION
BrandNTN
d - Internal diameter36,512 mm
D - External diameter79,375 mm
B - Bearing/Inner ring width28,829 mm
C - Outer ring width22,664 mm
T - Total width29,37 mm
d1 - External diameter inner ring59,5 mm
a - Charge load application point23,57 mm
Mass0,689 kg
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PRODUCT PERFORMANCE
C - Dynamic load95,5 kN
C0 - Static load104 kN
Cu - Fatigue limit load12,7 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 speed6600 tr/min
N lim - Grease lubrication limit speed5000 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR44 mm
db min - Min IR shoulder diameter55 mm
Da max - Max shoulder diameter OR66 mm
Db min - Min OR shoulder diameter75 mm
ra max - Max fillet radius3,5 mm
r1a - Max fillet radius3,3 mm
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