Item # 3980/3920, Tapered Roller Set - Inch Series and J Series On NTN Bearing Corp. of America

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	Item # 3980/3920, 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 2

Cone Number		3980

Cup Number		3920

Configuration		One

Lubrication		w/o Oil Hole

e (Axial Load Factor)		0.40

Y2 (Axial Load Factor)		1.49

Static Load Rating		42000 lbf 187000.0 N 187.00 kN

Dynamic Load Rating		28100 lbf 125000 N 125.00 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		4.4375 in 112.712 mm

Wo		0.9375 in 23.812 mm

Wi		1.1830 in 30.048 mm

W		1.1875 in 30.162 mm

r		0.1300 in 3.300 mm

R		0.14 in 3.5 mm

a (Effective Load Center)		-0.1800 in -4.600 mm

U		2.95 in 75.0 mm

V		2.68 in 68.0 mm

X		4.17 in 106.0 mm

Z		3.90 in 99.0 mm

Item # 3980/3920, Tapered Roller Set - Inch Series and J Series