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Emerson Bearing Company
201 Brighton Avenue
Boston, MA 02134
Phone: (800) 225-4587 • Fax: (800) 252-1996
Email: info@emersonbearing.com
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Outer Ring and roller assembly with separable inner ring
Outer ring and roller assemblies and associated inner rings are packed and shipped separately. For a complete bearing, Specify both outer and inner numbers desired.
MR Series
Unit of Measure
Items MR Series
MI-6-N
MR Series Heavy Duty Needle Roller Bearings with Inner Ring 		MR Series
MI-7-N
MR Series Heavy Duty Needle Roller Bearings with Inner Ring 		MR Series
MI-6
MR Series Heavy Duty Needle Roller Bearings with Inner Ring 		MR Series
MI-8-N
MR Series Heavy Duty Needle Roller Bearings with Inner Ring 		MR Series
MI-9-N
MR Series Heavy Duty Needle Roller Bearings with Inner Ring
Military Standard Number N/A MS 500072-1 N/A N/A N/A MS 500072-2 N/A
(B) Shaft Diameter N/A 0.3750 in N/A 7/16 in N/A 0.3750 in N/A 1/2 in N/A 0.5625 in
(B) Dimension Tolerance N/A +0.0000/-0.0004
(D) Dimension N/A 1.1250 in N/A 1.1250 in N/A 1.1250 in N/A 1-1/4 in N/A 1-1/4 in
(D) Dimension Tolerance N/A +0.0000/-0.0005
(W) Dimension N/A 0.750 in N/A 0.750 in N/A 1.000 in N/A 0.750 in N/A 0.750 in
(W) Dimension Tolerance N/A +0.000/-0.005
(W1) Dimension N/A 0.760 in N/A 0.760 in N/A 1.010 in N/A 0.760 in N/A 0.760 in
(W1) Dimension Tolerance N/A +0.000/-0.005
(H) Hole Dia. N/A 5/64 in
(R) Max. Fillet for Shaft & Housing N/A 0.025 in N/A 0.025 in N/A 0.025 in N/A 0.040 in N/A 0.040 in
Stationary Shaft Dia. N/A 0.3747 in N/A 0.4372 in N/A 0.3747 in N/A 0.4997 in N/A 0.5623 in
Stationary Shaft Dia. Tolerance N/A +0.0000/-0.0005
Rotating Shaft Dia. N/A 0.3755 in N/A 0.4380 in N/A 0.3755 in N/A 0.5005 in N/A 0.5630 in
Rotating Shaft Dia. Tolerance N/A +0.0000/-0.0005
Stationary Housing Bore Dia. N/A 1.1257 in N/A 1.1257 in N/A 1.1257 in N/A 1.2507 in N/A 1.2507 in
Stationary Housing Bore Dia. Tolerance N/A +0.0000/-0.0005 +0.0000/-0.0007
Rotating Housing Bore Dia. N/A 1.1247 in N/A 1.1247 in N/A 1.1247 in N/A 1.2497 in N/A 1.2497 in
Rotating Housing Bore Dia. Tolerance N/A +0.0000/-0.0007
Static Load Rating N/A 4300 lb N/A 4300 lb N/A 6500 lb N/A 5400 lb N/A 5400 lb
Basic Dynamic Rating N/A 4320 lb N/A 4320 lb N/A 5930 lb N/A 4990 lb N/A 4990 lb
Complete Assembly Item # N/A MR-10-N N/A MR-10-N N/A MR-10 N/A MR-12-N N/A MR-12-N