Item # 387A/383A, Tapered Roller Set - Inch Series and J Series On NTN Bearing Corp. of America

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	Item # 387A/383A, 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		387A

Cup Number		383A

Configuration		One

Lubrication		w/o Oil Hole

e (Axial Load Factor)		0.35

Y2 (Axial Load Factor)		1.69

Static Load Rating		23600 lbf 105000 N 105.00 kN

Dynamic Load Rating		18500 lbf 82500 N 82.50 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		2.2500 in 57.150 mm

D		3.9370 in 100.000 mm

Wo		0.7018 in 17.826 mm

Wi		0.8640 in 21.946 mm

W		0.8268 in 21.000 mm

r		0.0800 in 2.000 mm

R		0.14 in 3.5 mm

a (Effective Load Center)		-0.1200 in -3.000 mm

U		2.72 in 69.0 mm

V		2.44 in 62.0 mm

X		3.66 in 93.0 mm

Z		3.50 in 89.0 mm

Item # 387A/383A, Tapered Roller Set - Inch Series and J Series