Model: DW4K

Airframe Ball Bearing

Special Features:

M80 pct full of grease mil-g-81322, heat treat rings and balls to rockwell c scale 60 to 66 and heat stabilized for operation at 250 degrees f, radial and lateral eccentrici type 0.0010 in. Inner ring, 0.0016 in. Outer ring

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 0.7450 inches and 0.7500 inches
Inner Ring Width
Between 0.8700 inches and 0.8750 inches
Seal Quantity
2
Bearing Seal Type
Contact
Load Direction
Radial
Part Name Assigned By Controlling Agency
Bearing ball, airframe, anti friction, extra wide double row, intermediate duty
Lubrication Material Specification
Mil-g-81322 military specification single material response
Material
Plastic polytetrafluoroethylene seal
Material
Steel comp e52100 ball
Material
Steel comp e52100 inner ring
Material
Steel comp e52100 outer ring
Material Specification
Ams 3652 assn standard single material response seal
Material Specification
Ams 6440 assn standard single material response ball
Material Specification
Ams 6440 assn standard single material response inner ring
Material Specification
Ams 6440 assn standard single material response outer ring
Surface Treatment
Cadmium all external/exposed metal surfaces
Surface Treatment Specification
Qq-p-416, type 1, cl2 federal specification single treatment response all external/exposed metal surfaces
Style Designator
Double row
NSN
3110-00-277-8348
Part Number
DW4K
Description
Bearing,ball,airframe
CAGE
38443

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 DW4K NSN 3110-00-277-8348

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:
F

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
1.7 X 1.7 X 1.8
Paclk Weight:
0.1000lbs
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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