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

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	Item # 30311D, 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		Through Hardened Steel

Limiting Speed - Oil		3800 RPM

Limiting Speed - Grease		2900.0 RPM

Style		Cone & Cup

Precision Rating		Class 0

Configuration		One

Lubrication		w/o Oil Hole

e (Axial Load Factor)		0.83

Y2 (Axial Load Factor)		0.73

Y0 (Axial Load Factor)		0.40

Static Load Rating		34500 lbf 154000 N 154.00 kN

Dynamic Load Rating		29700 lbf 132000 N 132.00 kN

Enclosure		Open

Weight		3.505 lb 1.590 kg

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		1.1417 in 29.000 mm

a (Effective Load Center)		-0.2559 in -6.500 mm

T		1.2402 in 31.500 mm

r		0.0800 in 2.000 mm

R		0.08 in 2.0 mm

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

Item # 30311D, Tapered Roller Set - Metric Series