TWF21-28U Airframe Ball Bearing

Comprehensive specifications and application details for: TWF21-28U Airframe Ball Bearing.

Summary

Explore detailed summary information for bearing: TWF21-28U. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Part Number: TWF21-28U
Federal Supply Classification: 3110 Unmounted Antifriction Bearings
(NSN) National Stock Number: 3110-00-343-4472
Item Name Code: 00041
Federal Item Identification Guide: A044A0
Assigment Date: 01/15/1974

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.

radial load direction, 0.2500 inches nominal outer ring width, mil-l-6085 mil spec single material response lubrication material document and classification, 1.3122 inches minimum and 1.3125 inches maximum bore diameter, 0.2810 inches nominal inner ring width

Datasheet

Below are the comprehensive technical specifications for bearing: 3110-00-343-4472 . Find dimensions, materials, tolerances, performance characteristics, etc.

Bore Diameter: 1.3122 inches minimum and 1.3125 inches maximum
Inner Ring Width: 0.2810 inches nominal
Load Direction: radial
Lubrication Material Document And Classification: mil-l-6085 mil spec single material response
Outer Ring Width: 0.2500 inches nominal
Overall Outside Diameter: 1.7496 inches minimum and 1.7500 inches maximum
Material Document And Classification: 66 mil spec single material response overall
Material: steel comp e52100 overall
Shield Quantity: 2
Special 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
Style Designator: single row inner ring extended both sides

Frequently Asked Questions

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What is the FSCG of the NSN 3110-00-343-4472?: The FSCG of the NSN 3110-00-343-4472 is 3110

Does the NSN 3110-00-343-4472 have a Schedule B code assigned?: Yes, the Schedule B code is 8482105068

Does NSN 3110-00-343-4472 require demilitarization?: Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 3110-00-343-4472 contain precious materials?: Precious metal content is unknown

Does NSN 3110-00-343-4472 contain hazardous materials?: Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.