KR8-MSB Rod End Plain Bearing

Comprehensive specifications and application details for: KR8-MSB Rod End Plain Bearing.

Summary

Explore detailed summary information for bearing: KR8-MSB. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Part Number: KR8-MSB
Federal Supply Classification: 3120 Unmounted Plain Bearings
(NSN) National Stock Number: 3120-01-144-3857
Item Name Code: 13209
Federal Item Identification Guide: A045A0
Assigment Date: 12/20/1982

A detachable assembly in or on which a journal, gudgeon, pivot, or the like moves. It is used to carry a load and to reduce sliding friction. It does not employ rolling elements. The outer member of the assembly is modified to provide a shank. The inner member may be either a plain spherical bearing or a sleeve bearing. Excludes:bearing, plain, spherical and bearing, plain, self-aligning.

2.4280 inches minimum and 2.4480 inches maximum bore center to shank end distance, 28.0 rockwell c minimum and 37.0 rockwell c maximum race insert hardness rating, 55.0 rockwell c minimum and 62.0 rockwell c maximum inner member hardness rating, 39.0 rockwell c minimum and 42.0 rockwell c maximum rod end body hardness rating, 0.4995 inches minimum and 0.5000 inches maximum bore diameter

Datasheet

Below are the comprehensive technical specifications for bearing: 3120-01-144-3857 . Find dimensions, materials, tolerances, performance characteristics, etc.

Bore Diameter: 0.4995 inches minimum and 0.5000 inches maximum
Bore Center To Shank End Distance: 2.4280 inches minimum and 2.4480 inches maximum
Hardness Rating: 39.0 rockwell c minimum and 42.0 rockwell c maximum rod end body
Hardness Rating: 55.0 rockwell c minimum and 62.0 rockwell c maximum inner member
Hardness Rating: 28.0 rockwell c minimum and 37.0 rockwell c maximum race insert
Inner Member Width: 0.6230 inches minimum and 0.6250 inches maximum
Overall Length: 3.1065 inches nominal
Material Document And Classification: ams5630 assn std single material response inner member
Material Document And Classification: ams5643 assn std single material response race insert
Material Document And Classification: mil-b-81820 mil spec all material responses race liner
Material Document And Classification: mil-s-5000 mil spec single material response rod end body
Material: plastic polytetrafluoroethylene and plastic polyamide (nylon) and plastic phenolic race liner
Material: steel comp 440c inner member
Material: steel comp 630 race insert
Material: steel comp e4340 rod end body
Outer Member Outside Diameter: 1.3270 inches minimum and 1.3470 inches maximum
Outer Member Width: 0.5100 inches minimum and 0.5200 inches maximum
Shank Thread Length: 1.4370 inches minimum and 1.4990 inches maximum
Shank Style: externally threaded
Static Radial Load Rating: 19500 pounds
Style Designator: ball type
Surface Treatment Document And Classification: qq-p-416,type 2,class fed spec single treatment response rod end body
Surface Treatment: cadmium and chromate rod end body
Thread Class: 3a
Thread Diameter: 0.500 inches nominal
Thread Direction: right-hand
Thread Quantity Per Inch: 20
Thread Series Designator: unjf

Replaces

The NSN 3120-01-144-3857 is used in place of the following discontinued or alternate items:

NSN	Name	Date
3120-00-038-8571	No Name Available	09/01/1990
3120-01-313-0002	No Name Available	01/01/1992

Frequently Asked Questions

Find quick answers to common questions about bearing: KR8-MSB. Explore technical specifications, installation tips, maintenance guidelines, regulatory requirements, and troubleshooting advice.

What is the FSCG of the NSN 3120-01-144-3857?: The FSCG of the NSN 3120-01-144-3857 is 3120

Does the NSN 3120-01-144-3857 have a Schedule B code assigned?: Yes, the Schedule B code is 8483308055

Does NSN 3120-01-144-3857 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 3120-01-144-3857 contain precious materials?: Item does not contain precious metal.

Does NSN 3120-01-144-3857 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.