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4T-30210 - NTN

4T-30210

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 diameter50 mm
D - External diameter90 mm
B - Bearing/Inner ring width20 mm
C - Outer ring width17 mm
T - Total width21,75 mm
d1 - External diameter inner ring69 mm
a - Charge load application point19,5 mm
rs - Min fillet radius1,5 mm
r1s - Min fillet radius1,5 mm
Mass0,56 kg
ISO 355 referenceT3DB050
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PRODUCT PERFORMANCE
C - Dynamic load85,5 kN
C0 - Static load93 kN
Cu - Fatigue limit load11,3 kN
A2 - Rating life coefficient1
e - Coefficient0.42
Y0 - Static axial load coefficient0.79
Y2 - Upper axial load coefficient1.43
N lim - Oil lubrication limit speed5300 tr/min
N lim - Grease lubrication limit speed4000 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR58 mm
db min - Min IR shoulder diameter58,5 mm
Da min - Min shoulder diameter OR79 mm
Da max - Max shoulder diameter OR81,5 mm
Db min - Min OR shoulder diameter85 mm
Ca - Min clearance3 mm
Cb - Min clearance4,5 mm
ra max - Max fillet radius1,5 mm
r1a - Max fillet radius1,5 mm
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