Item # 12580/12520, Tapered Roller Set - Inch Series and J Series On NTN Bearing Corp. of America

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	Item # 12580/12520, 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		12580

Cup Number		12520

Configuration		One

Lubrication		w/o Oil Hole

e (Axial Load Factor)		0.32

Y2 (Axial Load Factor)		1.86

Static Load Rating		8750 lbf 39000 N 39.00 kN

Dynamic Load Rating		8450 lbf 37500 N 37.50 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		0.8125 in 20.638 mm

D		1.9380 in 49.225 mm

Wo		0.6250 in 15.875 mm

Wi		0.7813 in 19.845 mm

W		0.7813 in 19.845 mm

r		0.0600 in 1.500 mm

R		0.06 in 1.5 mm

a (Effective Load Center)		-0.2800 in -7.100 mm

U		1.12 in 28.5 mm

V		1.02 in 26.0 mm

X		1.79 in 45.5 mm

Z		1.67 in 42.5 mm

Item # 12580/12520, Tapered Roller Set - Inch Series and J Series