Model: 3TWA45-56-12

Airframe Ball Bearing

Special Features:

Integral shields, fractured outer ring with 2 holding rings, undersize balls separate load carrying balls, 0.0027-0.0031 radial clearance

Properties:

Bore Diameter
Between 2.8122 inches and 2.8125 inches
Overall Outside Diameter
Between 3.4994 inches and 3.5000 inches
Lubrication Material
Lubricant
Outer Ring Width
Between 0.3100 inches and 0.3120 inches
Inner Ring Width
Between 0.3730 inches and 0.3750 inches
Shield Quantity
2
Load Direction
Radial
Lubrication Material Specification
Mil-l-17353 military specification single material response
Material
Steel comp 440c
Style Designator
Single row inner ring extended both sides
NSN
3110-00-232-8316
Part Number
3TWA45-56-12
Description
Bearing,ball,airframe
CAGE
78118

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 3TWA45-56-12 NSN 3110-00-232-8316

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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
M
SPI No.:
SPI Rev.:
SPC Mkg:
ZZ
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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