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Single row tapered roller bearings

31320XU - NTN

31320XU

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 diameter100 mm
D - External diameter215 mm
B - Bearing/Inner ring width51 mm
C - Outer ring width35 mm
T - Total width56,5 mm
d1 - External diameter inner ring160 mm
a - Charge load application point69 mm
rs - Min fillet radius4 mm
r1s - Min fillet radius3 mm
Mass8,7 kg
ISO 355 referenceT7GB100
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PRODUCT PERFORMANCE
C - Dynamic load395 kN
C0 - Static load435 kN
Cu - Fatigue limit load46 kN
A2 - Rating life coefficient1
e - Coefficient0.83
Y0 - Static axial load coefficient0.4
Y2 - Upper axial load coefficient0.73
N lim - Oil lubrication limit speed2400 tr/min
N lim - Grease lubrication limit speed1800 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR121 mm
db min - Min IR shoulder diameter118 mm
Da min - Min shoulder diameter OR168 mm
Da max - Max shoulder diameter OR201 mm
Db min - Min OR shoulder diameter202 mm
Ca - Min clearance7 mm
Cb - Min clearance21,5 mm
ra max - Max fillet radius3 mm
r1a - Max fillet radius2,5 mm
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