Item # MR122012+MI-081212, Machined-Ring Needle Roller Bearing w/ Inner Ring - MR+MI Series On NTN Bearing Corp. of America

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	Item # MR122012+MI-081212, 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		21000 RPM

Limiting Speed - Grease		14000 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		4750 lbf 21100 N 21.10 kN

Dynamic Load Rating		4400 lbf 19500.0 N 19.50 kN

Weight		0.174 lb 0.079 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		0.5000 in 12.700 mm

D		1.2500 in 31.750 mm

F		0.7500 in 19.050 mm

C		0.7500 in 19.050 mm

B		0.7598 in 19.300 mm

r		0.0394 in 1.000 mm

s		0.1575 in 4.000 mm

da min		0.6890 in 17.500 mm

Da max		1.0433 in 26.500 mm

ras max		0.0394 in 1.000 mm

Item # MR122012+MI-081212, Machined-Ring Needle Roller Bearing w/ Inner Ring - MR+MI Series