Model: MB544DDFS428

Airframe Ball Bearing

Special Features:

Internal clearancd; types 2, 3, or 5 can be used for surface treatment

Properties:

Bore Diameter
Between 1.8117 inches and 1.8125 inches
Overall Outside Diameter
Between 2.2493 inches and 2.2500 inches
Lubrication Material
Grease
Outer Ring Width
Between 0.2450 inches and 0.2500 inches
Inner Ring Width
Between 0.2785 inches and 0.2810 inches
Seal Quantity
2
Shield Quantity
2
Bearing Seal Type
Contact
Load Direction
Radial
Lubrication Material Specification
Mil-g-23827 military specification single material response
Material
Steel comp 440c ballsteel comp 440c inner ringsteel comp 440c outer ringglass sealplastic phenolic shield
Material Specification
66 federal standard single material response ball
Material Specification
66 federal standard single material response inner ring
Material Specification
66 federal standard single material response outer ring
Surface Treatment
Cadmium exposed surfaces as mounted
Surface Treatment
Passivate ball
Surface Treatment
Passivate inner ring
Surface Treatment
Passivate outer ring
Surface Treatment
Plastic polytetrafluoroethylene seal
Surface Treatment Specification
Qq-p-35 federal specification single treatment response ball
Surface Treatment Specification
Qq-p-35 federal specification single treatment response inner ring
Surface Treatment Specification
Qq-p-35 federal specification single treatment response outer ring
Style Designator
Single row, torque tube type, w/or w/o closure
NSN
3110-00-843-4450
Part Number
MB544DDFS428
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 MB544DDFS428 NSN 3110-00-843-4450

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:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.2000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
M
SPI No.:
SPI Rev.:
SPC Mkg:
51
LVL_A:
E
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
114820
UFC:
58860
LTL:
77.5
LCL:
--
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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