Item # 28985/28921, Tapered Roller Set - Inch Series and J Series On NTN Bearing Corp. of America

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Technical Specifications

Type	N/A Tapered Roller Bearing
Bore Type	N/A Round
Material	N/A Case Carburized Steel
Limiting Speed - Grease	N/A 3500 RPM
Style	N/A Cone & Cup
Precision Rating	N/A Not Available
Cone Number	N/A 28985
Cup Number	N/A 28921
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 30125 lbf134000 N134.00 kN
Dynamic Load Rating	N/A 20345 lbf90500 N90.50 kN
Enclosure	N/A Open
Weight	N/A 1.669 lb0.760 kg
Operating Temperature Range	N/A -40 to 250 ºF-40 to 120 ºC

Dimensional Specifications

Loading zoom Open Image Tapered Roller Set - Inch Series and J Series - Dimensions
B	N/A 2.3750 in60.325 mm
D	N/A 3.9370 in100.000 mm
Wo	N/A 0.7813 in19.845 mm
Wi	N/A 1.0000 in25.400 mm
W	N/A 1.0000 in25.400 mm
r	N/A 0.1300 in3.300 mm
R	N/A 0.14 in3.5 mm
a (Effective Load Center)	N/A -0.1000 in-2.500 mm
U	N/A 2.87 in73.0 mm
V	N/A 2.64 in67.0 mm
X	N/A 3.78 in96.0 mm
Z	N/A 3.50 in89.0 mm