Model: MKP47B

Airframe Ball Bearing

Special Features:

Heat stabilized for operation at 250 degrees f; 80 pct full of specified lubricant; extra precision id tolerance; all external surfaces except bore and seal retainers treated w/cadmium per qq-p-416, type 1, cl 2

Properties:

Bore Diameter
Between 2.9375 inches and 2.9380 inches
Overall Outside Diameter
Between 3.8740 inches and 3.8750 inches
Lubrication Material
Grease
Outer Ring Width
Between 0.4640 inches and 0.4690 inches
Inner Ring Width
Between 0.5260 inches and 0.5310 inches
Seal Quantity
2
Bearing Seal Type
Contact
Load Direction
Radial
Lubrication Material Specification
Mil-g-81322 military specification single material response
Material
Steel comp e51100 ball or steel comp e52100 ballsteel comp e52100 inner ringsteel comp e52100 outer ringstainless steel retainerplastic polytetrafluoroethylene seal and glass fiber seal
Material Specification
66 federal standard all material responses ball66 federal standard single material response inner ring66 federal standard single material response outer ringams 3652 assn standard 1st material response seal or ams 3666 assn standard 1st material response seal and ams 3666 assn standard 2nd material response seal
Style Designator
Single row inner ring extended both sides
NSN
3110-01-357-9142
Part Number
MKP47B
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 MKP47B NSN 3110-01-357-9142

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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