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4T-6386/6320 - NTN

4T-6386/6320

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.

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Technical datasheet

KitThis kit contains the following reference(s) - 4T-6386 - 4T-6320
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Specs

PRODUCT DEFINITION

d - Internal diameter 66,675 mm
D - External diameter 135,755 mm
B - Bearing/Inner ring width 56,007 mm
C - Outer ring width 44,45 mm
T - Total width 53,975 mm
d1 - External diameter inner ring 98 mm
a - Charge load application point 35,175 mm
Mass 3,64 kg
Brand NTN
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PRODUCT PERFORMANCE

C - Dynamic load 310 kN
C0 - Static load 380 kN
Cu - Fatigue limit load 46,3 kN
A2 - Rating life coefficient 1
e - Coefficient 0.32
Y0 - Static axial load coefficient 1.02
Y2 - Upper axial load coefficient 1.85
Nlim - Oil lubrication limit speed 3800 tr/min
Nlim - Grease lubrication limit speed 2900 tr/min
Tmin - Min operating temperature -40 °C
Tmax - Max operating temperature 120 °C
FTF - Characteristic cage frequency 0,416 Hz
BSF - Characteristic rolling element frequency 5,621 Hz
BPFO - Characteristic outer ring frequency 6,649 Hz
BPFI - Characteristic inner ring frequency 9,351 Hz

ABUTMENT

da max - Max shoulder diameter IR 77 mm
db min - Min IR shoulder diameter 87 mm
Da max - Max shoulder diameter OR 117 mm
Db min - Min OR shoulder diameter 126 mm
ra max - Max fillet radius 4,3 mm
r1a - Max fillet radius 3,3 mm
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