Item # MR8811248+MI-728848, Machined-Ring Needle Roller Bearing w/ Inner Ring - MR+MI Series On NTN Bearing Corp. of America

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	Item # MR8811248+MI-728848, Machined-Ring Needle Roller Bearing w/ Inner Ring - MR+MI 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		Needle Roller Bearing

Bore Type		Round

Material		High Carbon Chrome Steel

Cage Material		Steel

Limiting Speed - Oil		2900 RPM

Limiting Speed - Grease		1900.0 RPM

Precision		ISO Class 0

Configuration		One

Enclosure		Open

Bearing Design		w/ Inner Ring

Oil Hole		w/ Oil Hole

Radial Internal Clearance		CN

Static Load Rating		77500 lbf 345000 N 345.00 kN

Dynamic Load Rating		77500 lbf 345000 N 345.00 kN

Weight		16.006 lb 7.260 kg

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

Dimensional Specifications

		Machined-Ring Needle Roller Bearing w/ Inner Ring - MR+MI Series - Dimensions larger image

d		4.5000 in 114.300 mm

D		7.0000 in 177.800 mm

F		5.5000 in 139.700 mm

C		3.0000 in 76.200 mm

B		3.0150 in 76.580 mm

r		0.0984 in 2.500 mm

s		0.2756 in 7.000 mm

da min		4.8622 in 123.500 mm

Da max		6.6535 in 169.000 mm

ras max		0.0984 in 2.500 mm

Item # MR8811248+MI-728848, Machined-Ring Needle Roller Bearing w/ Inner Ring - MR+MI Series