4B18-4-125

Comprehensive specifications and application details for: 4B18-4-125 Sleeve Bearing.

Summary

Explore detailed summary information for bearing: 4B18-4-125. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Part Number
4B18-4-125
Federal Supply Classification
3120 Unmounted Plain Bearings
(NSN) National Stock Number
3120-00-288-4921
Item Name Code
13205
Federal Item Identification Guide
A045A0
Assigment Date
01/01/1961

A tubular shaped item with or without flange(s) designed to reduce friction and carry a kinetic load on the surface(s) parallel to the axis of the bore. It must have a visible or detectable means of lubrication or be self-lubricated. The over all length must exceed 25 percent of the outside diameter or the shortest distance between peripheral flats of the body, except for straight tubular (without flange or shoulder) items having a bearing surface(s) parallel to the axis of the bore only. Includes items which are divided into two or more segments which include 180 degrees (3.141 radians) or less of the bearing periphery. See also bushing, sleeve; spacer, sleeve; and washer (as modified). Excludes:pin, hollow.

square left flange outside right corner corner shape, square left flange body corner corner shape, 0.3730 inches minimum and 0.3750 inches maximum body outside diameter, 0.2090 inches minimum and 0.2290 inches maximum body inside diameter, square outside left corner corner shape

Datasheet

Below are the comprehensive technical specifications for bearing: 3120-00-288-4921 . Find dimensions, materials, tolerances, performance characteristics, etc.

Body Inside Diameter
0.2090 inches minimum and 0.2290 inches maximum
Body Outside Diameter
0.3730 inches minimum and 0.3750 inches maximum
Corner Shape
square left flange body corner
Corner Shape
square left flange outside right corner
Corner Shape
square outside left corner
Corner Shape
square inside left corner
Corner Shape
square inside right corner
Corner Shape
square outside right corner
Flange Outside Diameter
0.4900 inches minimum and 0.5100 inches maximum
Flange Width
0.0630 inches nominal
Overall Length
0.3030 inches minimum and 0.3180 inches maximum
Material
copper alloy overall
Style Designator
solid, external flange one end
Surface Finish
125.0 microinches inside diameter surface of body
Surface Finish
250.0 microinches left end surface of body and flange
Surface Finish
250.0 microinches outside diameter surface of body
Surface Finish
250.0 microinches outside diameter surface of flange
Surface Finish
250.0 microinches right end surface of body
Surface Finish
250.0 microinches right end surface of left flange

Frequently Asked Questions

Find quick answers to common questions about bearing: 4B18-4-125. Explore technical specifications, installation tips, maintenance guidelines, regulatory requirements, and troubleshooting advice.

What is the FSCG of the NSN 3120-00-288-4921?
The FSCG of the NSN 3120-00-288-4921 is 3120
Does the NSN 3120-00-288-4921 have a Schedule B code assigned?
Yes, the Schedule B code is 8482997090
Does NSN 3120-00-288-4921 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 3120-00-288-4921 contain precious materials?
Precious metal content is unknown
Does NSN 3120-00-288-4921 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.
When the NSN 3120-00-288-4921 was assigned to the Federal Catalog?
It was assigned 64 years ago, on Sun, Jan 1, 1961

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