Item # 2878/2820, Tapered Roller Set - Inch Series and J Series On NTN Bearing Corp. of America

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	Item # 2878/2820, 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

Limiting Speed - Grease		5200 RPM

Style		Cone & Cup

Precision Rating		Class 4

Cone Number		2878

Cup Number		2820

Configuration		One

Lubrication		w/o Oil Hole

e (Axial Load Factor)		0.37

Y2 (Axial Load Factor)		1.63

Static Load Rating		17000 lbf 75500 N 75.50 kN

Dynamic Load Rating		14100 lbf 62500 N 62.50 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		1.3750 in 34.925 mm

D		2.8750 in 73.025 mm

Wo		0.6875 in 17.463 mm

Wi		0.9375 in 23.812 mm

W		0.8750 in 22.225 mm

r		0.1300 in 3.300 mm

R		0.03 in 0.8 mm

a (Effective Load Center)		-0.2200 in -5.500 mm

U		1.65 in 42.0 mm

V		1.61 in 41.0 mm

X		2.68 in 68.0 mm

Z		2.48 in 63.0 mm

ras max		0.0315 in 0.8 mm

r1as max		0.1299 in 3.000 mm

Item # 2878/2820, Tapered Roller Set - Inch Series and J Series