TWF21-28U

Airframe Ball Bearing

NSN 3110-00-343-4472

DEMIL

Shelf Life

UOM

NIIN

Demil:

Shelf Life:

N/A

UOM:

1 EA

NIIN:

003434472

Product Features

Inner ring radial runout 0.0003 in., outer ring radial runout 0.0004 in., outer ring fractured at one point, integral shields are formed by extension of inner and outer ring lands, radial clearance 0.0005 in. Min to 0.0015 in.Max, two holding rings on od of outer ring

Technical Specifications of NSN

Bore Diameter:

Between 1.3122 inches and 1.3125 inches

Overall Outside Diameter:

Between 1.7496 inches and 1.7500 inches

Lubrication Material:

Oil

Outer Ring Width:

0.2500 inches

Inner Ring Width:

0.2810 inches

Shield Quantity:

Load Direction:

Radial

Lubrication Material Specification:

Mil-l-6085 military specification single material response

Material:

Steel comp e52100

Material Specification:

66 military specification single material response

Style Designator:

Single row inner ring extended both sides

NSN:

3110-00-343-4472

Item Name:

Bearing,ball,airframe,anti Friction

Cage Code:

78118

Other Related Parts

Part Number

Cage

RNCC

RNVC

RNAAC

Status

MSDS

SADC

Part Number:

C2128BIE5

Cage Code:

40920

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Number:

TWF21-28U

Cage Code:

40920

RNCC:

RNVC:

RNAAC:

Status:

MSDS:

SADC:

Part Identification

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

00041

FIIG:

A044A0

Concept No.:

App. Key:

Cond. Code:

Status:

Part Materials

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

0.1000lbs

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

114820

UFC:

58860

LTL:

77.5

LCL:

WCC:

742

TCC:

SHC:

ACC:

Trailers/Vehicles

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Pricing & Availability

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Definition Definition of approved item name (AIN): "Anti Friction Airframe Ball Bearing"

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.