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

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	Item # 30312, 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		4000 RPM

Limiting Speed - Grease		3000.0 RPM

Style		Cone & Cup

Precision Rating		Class 0

Configuration		One

Lubrication		w/o Oil Hole

e (Axial Load Factor)		0.35

Y2 (Axial Load Factor)		1.74

Y0 (Axial Load Factor)		0.96

Static Load Rating		47000 lbf 210000 N 210.00 kN

Dynamic Load Rating		40500 lbf 180000.0 N 180.00 kN

Enclosure		Open

Weight		4.542 lb 2.060 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		1.0236 in 26.000 mm

B		1.2205 in 31.000 mm

a (Effective Load Center)		0.1083 in 2.750 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		3.03 in 77.0 mm

Da		4.65 in 118.0 mm

Da min		4.41 in 112.0 mm

Db		4.72 in 120.0 mm

Item # 30312, Tapered Roller Set - Metric Series