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

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	Item # 28985/28921, Tapered Roller Set - Inch Series and J Series

Unit of Measure: Imperial Metric Both

Order Now · Technical Specifications · Dimensional Specifications

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Ordering Options		Find a Distributor Contact NTN Customer Support Specialist Order through NTN DOL (Authorized Distributors Only)

Technical Specifications

Type		Tapered Roller Bearing

Bore Type		Round

Material		Case Carburized Steel

Style		Cone & Cup

Precision Rating		Class 4

Cone Number		28985

Cup Number		28921

Configuration		One

Lubrication		w/o Oil Hole

e (Axial Load Factor)		0.43

Y2 (Axial Load Factor)		1.41

Static Load Rating		30000 lbf 134000 N 134.00 kN

Dynamic Load Rating		20300 lbf 90500 N 90.50 kN

Enclosure		Open

Operating Temperature Range		-40 to 250 ºF -40 to 120 ºC

Dimensional Specifications

		Tapered Roller Set - Inch Series and J Series - Dimensions larger image

B		2.3750 in 60.325 mm

D		3.9370 in 100.000 mm

Wo		0.7813 in 19.845 mm

Wi		1.0000 in 25.400 mm

W		1.0000 in 25.400 mm

r		0.1300 in 3.300 mm

R		0.14 in 3.5 mm

a (Effective Load Center)		-0.1000 in -2.500 mm

U		2.87 in 73.0 mm

V		2.64 in 67.0 mm

X		3.78 in 96.0 mm

Z		3.50 in 89.0 mm

Item # 28985/28921, Tapered Roller Set - Inch Series and J Series