Model: MS21443-5B

Airframe Ball Bearing

Properties:

Bore Diameter
Between 0.3120 inches and 0.3125 inches
Overall Outside Diameter
Between 0.9370 inches and 0.9375 inches
Lubrication Material
Grease
Outer Ring Width
Between 0.5580 inches and 0.5630 inches
Inner Ring Width
Between 0.6200 inches and 0.6250 inches
Seal Quantity
2
Bearing Seal Type
Contact
Load Direction
Radial
Lubrication Material Specification
Mil-g-81322 military specification single material response or mil-g-23827 military specification single material response
Material
Plastic polytetrafluoroethylene seal
Material
Steel comp e52100 ball or steel comp e51100 ball
Material
Steel comp e52100 inner ring
Material
Steel comp e52100 outer ring
Material
Steel retainer
Material Specification
Ams 3666 assn standard single material response seal
Material Specification
Ams6440 assn standard 1st material response ball or ams6449 assn standard 1st material response ball or 66 e52100 assn standard 1st material response ball or 66 e51100 assn standard 2nd material response ball
Material Specification
Ams6440 assn standard single material response outer ring or 66 e52100 federal standard single material response outer ring
Material Specification
Ams6440 assn standard single material response inner ring or 66 e52100 federal standard single material response inner ring
Surface Treatment
Cadmium all external/exposed metal surfaces or nickel all external/exposed metal surfaces or zinc all external/exposed metal surfaces
Surface Treatment Specification
Qq-p-416, type 1, cl 2 federal specification 1st treatment response all external/exposed metal surfaces or ams 2417 assn standard 2nd treatment response all external/exposed metal surfaces
Style Designator
Double row
NSN
3110-01-518-2291
Part Number
MS21443-5B
Description
Bearing,ball,airframe
CAGE
96906

A cylindrical item in which the inner or outer ring turns upon row(s) of hardened ball, bearing which roll on a raceway, thus minimizing friction. These items are characterized by their noncorrosive qualities, lightness of weight, inch dimensions rather than metric, inner rings generally projecting beyond the faces of the outer ring, or a very narrow width inner ring having an outside diameter slightly larger than the bore diameter. Designed primarily for use in aircraft assemblies, such as control systems and surfaces of aircraft. Excludes bearing, ball, annular.

Part MS21443-5B NSN 3110-01-518-2291

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00041
FIIG:
A044A0
Concept No.:
App. Key:
B
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
A
ESD:
A
MMAC:
CRITL:
X

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Schedule B and Export
  • Schedule B: 8482105068
  • SITC: 74610
  • End Use: Industrial machines, other
  • NAICS: 332991
  • USDA: 1

Freight Class: Ball bearings, nesoi

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