Model: KP4A

Airframe Ball Bearing

Properties:

Bore Diameter
Between 0.2495 inches and 0.2500 inches
Overall Outside Diameter
Between 0.7495 inches and 0.7500 inches
Lubrication Material
Grease
Outer Ring Width
Between 0.2140 inches and 0.2190 inches
Inner Ring Width
Between 0.2760 inches and 0.2810 inches
Seal Quantity
2
Bearing Seal Type
Contact
Load Direction
Radial
Standard Tolerance Designation
Afbma standard tolerance for airframe ball bearings
Lubrication Material Specification
Mil-g-23827 military specification single material response
Material
Rubber synthetic seal
Material
Steel comp e52100 ball
Material
Steel comp e52100 inner ring
Material
Steel comp e52100 outer ring
Surface Treatment
Cadmium
Style Designator
Single row inner ring extended both sides
NSN
3110-00-142-4456
Part Number
KP4A
Description
Bearing,ball,airframe
CAGE
FA951

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 KP4A NSN 3110-00-142-4456

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:
U
ESD:
ESD:
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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