bearings › airframe ball bearings

MS27640-4

Name: MS27640-4
Brand: MS
SKU: MS27640-4

Bearing

Description

Diameter: 0.9014", heavy duty anti-friction airframe bearing

Alternate Part Number	KP4
Approximate Inside Shoulder Diameter A	0.390 in
Bore B	0.2500 in
Bore B Tolerance	-0.0005 in
Bore Diameter	0.2500
Industry Standards/Certification	MS27640
Inside Ring Bore Chamfer E	0.005 in
Inside Ring Bore Chamfer E Tolerance	-0.000 in
Inside Ring Width W	0.484 in
Inside Ring Width W Tolerance	-0.005 in
Manufacturing Part Number	KP4
Material	Plastic
Material Specification	66 fed std all material responses ball, 66 fed std single material response inner ring, 66 fed std single material response outer ring, Ams 3652 assn std single material response seal or ams 3666 assn std single material response seal
NIIN	00-023-6669
NSN	3110-00-023-6669
Outside Diameter D	0.9014 in
Outside Diameter D Tolerance	-0.0005 in
Outside Ring Outer Diameter Chamfer C	0.032 in
Outside Ring Outer Diameter Chamfer C Tolerance	-0.000 in
Outside Ring Width H	0.335 in
Outside Ring Width H Tolerance	-0.005 in
Radial Limit Load Rating	2680 lb
Special Features	80 pct. full of mil-g-81322,internal radial clearance 0.0004 in. min,0.0010 in. max,heat treat rings and balls to rockwell c 60 to 66 and stabilized for operation at 250 deg. f,radial and lateral eccentricity inner ring 0.0010 in. outerring 0.0016 in.
Style Designator	Single row inner ring extended both sides
Surface Treatment	Cadmium exposed surfaces as mounted
Surface Treatment Specification	Qq-p-416,ty 1,cl 2 fed spec single treatment response exposed surfaces as mounted
Thrust Limit Load Rating	1200 lb
Weight	0.065 lb

Parts that share this base number, ordered by size. Always verify the full specification before substituting.

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Catalog data updated 2026-07-05. Report a data error