Item # 30311DDF, Tapered Roller Set - Metric Series On NTN Bearing Corp. of America

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	Item # 30311DDF, Tapered Roller Set - Metric 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		TS Assembly

Precision Rating		Class 0

Configuration		Two

Lubrication		w/o Oil Hole

e (Axial Load Factor)		0.83

Y2 (Axial Load Factor)		0.73

Static Load Rating		40000 lbf 179000 N 179.00 kN

Dynamic Load Rating		35000 lbf 155000.0 N 155.00 kN

Enclosure		Open

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

Dimensional Specifications

		Tapered Roller Set - Metric Series - Dimensions larger image

d		2.1654 in 55.000 mm

D		4.7244 in 120.000 mm

C		0.8268 in 21.000 mm

B		1.6535 in 42.000 mm

r1as max		0.0787 in 2.000 mm

r		0.0400 in 1.000 mm

R		0.00 in

da		2.64 in 67.0 mm

db		2.68 in 68.0 mm

Da		4.33 in 110.0 mm

Da min		3.70 in 94.0 mm

Db		4.45 in 113.0 mm

ras max		0.0787 in 2.000 mm

Item # 30311DDF, Tapered Roller Set - Metric Series