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Unit of Measure

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Ordering Options

N/A Contact NTN Customer Relations

Technical Specifications

Type

N/A Tapered Roller Bearing

Bore Type

N/A Round

Material

N/A Case Carburized Steel

Style

N/A Cone & Cup

Precision Rating

N/A Class 4

Cone Number

N/A 28990

Cup Number

N/A 28920

Configuration

N/A One

Lubrication

N/A w/o Oil Hole

e (Axial Load Factor)

N/A 0.43

Y2 (Axial Load Factor)

N/A 1.41

Static Load Rating

N/A 30000 lbf134000 N134.00 kN

Dynamic Load Rating

N/A 20300 lbf90500 N90.50 kN

Enclosure

N/A Open

Operating Temperature Range

N/A -40 to 250 ºF-40 to 120 ºC

Dimensional Specifications


Tapered Roller Set - Inch Series and J Series - Dimensions

B

N/A 2.4400 in61.976 mm

D

N/A 4.0000 in101.600 mm

Wo

N/A 0.7813 in19.845 mm

Wi

N/A 0.9688 in24.608 mm

W

N/A 1.0000 in25.400 mm

r

N/A 0.1300 in3.300 mm

R

N/A 0.08 in2.0 mm

a (Effective Load Center)

N/A -0.0700 in-1.700 mm

U

N/A 2.83 in72.0 mm

V

N/A 2.68 in68.0 mm

X

N/A 3.82 in97.0 mm

Z

N/A 3.54 in90.0 mm