Model: KP3A MIL-G-3278

Airframe Ball Bearing

Properties:

Bore Diameter
Between 0.1895 inches and 0.1900 inches
Overall Outside Diameter
Between 0.6245 inches and 0.6250 inches
Lubrication Material
Grease
Outer Ring Width
Between 0.2244 inches and 0.2344 inches
Inner Ring Width
Between 0.2919 inches and 0.2969 inches
Seal Quantity
2
Bearing Seal Type
Contact
Load Direction
Radial
Internal Fit-up Designation
Standard
Standard Tolerance Designation
Afbma standard tolerance for airframe ball bearings
Functional Description
Intmd duty aircraft cont sys
Lubrication Material Specification
Mil-g-23827 military specification single material response
Material
Rubber synthetic seal and stainless steel seal
Material
Steel comp e51100 ball or steel comp e52100 ball
Material
Steel comp e52100 inner ring
Material
Steel comp e52100 outer ring
Material Specification
66, uns g51986 federal standard 1st material response ball or 66, uns g52986 assn standard 2nd material response ball
Material Specification
66, uns g52986 assn standard single material response outer ring
Material Specification
66, uns g52986 federal standard single material response inner ring
Material Specification
Rubber comp and cres mfr ref all material responses seal
Relationship To Similar Equipment
SIMI-LA-RTO-NSN3
Surface Treatment
Cadmium all external/exposed metal surfaces
Surface Treatment Specification
Qq-p-416, type 1, class 2 federal specification single treatment response all external/exposed metal surfaces
Style Designator
Single row inner ring extended both sides
Supplementary Features
Not to be relub
Type/model Designation
Kp-a
Specification Data
88044-an201/canceled/ government standard and 96906-ms20201/canceled/ government standard
NSN
3110-00-142-4451
Part Number
KP3A MIL-G-3278
Description
Bearing,ball,airframe
CAGE
21335

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 KP3A MIL-G-3278 NSN 3110-00-142-4451

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:
A
ESD:
A
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
114820
UFC:
58860
LTL:
77.5
LCL:
77.5
WCC:
742
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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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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