Item # 30312D, Tapered Roller Set - Metric Series On NTN Bearing Corp. of America

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	Item # 30312D, 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		3600 RPM

Limiting Speed - Grease		2700 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		39500 lbf 176000 N 176.00 kN

Dynamic Load Rating		33500 lbf 150000 N 150.00 kN

Enclosure		Open

Weight		4.343 lb 1.970 kg

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

Dimensional Specifications

		Tapered Roller Set - Metric Series - Dimensions larger image

d		2.3622 in 60.000 mm

D		5.1181 in 130.000 mm

C		0.8661 in 22.000 mm

B		1.2205 in 31.000 mm

a (Effective Load Center)		0.2756 in 7.000 mm

T		1.3189 in 33.500 mm

r		0.0800 in 2.000 mm

R		0.10 in 2.5 mm

da		2.91 in 74.0 mm

db		2.87 in 73.0 mm

Da		4.65 in 118.0 mm

Da min		4.06 in 103.0 mm

Db		4.88 in 124.0 mm

Item # 30312D, Tapered Roller Set - Metric Series