21918 Rod End Plain Bearing

Comprehensive specifications and application details for: 21918 Rod End Plain Bearing.

Summary

Explore detailed summary information for bearing: 21918. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Part Number: 21918
Federal Supply Classification: 3120 Unmounted Plain Bearings
(NSN) National Stock Number: 3120-00-083-8917
Item Name Code: 13209
Federal Item Identification Guide: A045A0
Assigment Date: 01/01/1963

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.

20.0 rockwell c minimum and 35.0 rockwell c maximum race insert hardness rating, 5.0300 inches nominal bore center to shank end distance, 55.0 rockwell c minimum and 62.0 rockwell c maximum inner member hardness rating, 0.9995 inches minimum and 1.0000 inches maximum bore diameter, 0.9980 inches minimum and 1.0000 inches maximum inner member width

Datasheet

Below are the comprehensive technical specifications for bearing: 3120-00-083-8917 . Find dimensions, materials, tolerances, performance characteristics, etc.

Bore Center To Shank End Distance: 5.0300 inches nominal
Bore Diameter: 0.9995 inches minimum and 1.0000 inches maximum
Hardness Rating: 55.0 rockwell c minimum and 62.0 rockwell c maximum inner member
Hardness Rating: 20.0 rockwell c minimum and 35.0 rockwell c maximum race insert
Inner Member Width: 0.9980 inches minimum and 1.0000 inches maximum
Overall Length: 6.2800 inches nominal
Material: plastic polytetrafluoroethylene race liner
Material: steel comp 4130 internal rod end body
Material: steel comp 440c inner member
Material: steel comp 631 or steel comp 630 race insert
Outer Member Outside Diameter: 2.5000 inches nominal
Outer Member Width: 0.7990 inches minimum and 0.8090 inches maximum
Shank Thread Length: 3.1250 inches nominal
Shank Style: externally threaded
Static Radial Load Rating: 32200 pounds
Style Designator: ball type
Surface Treatment: cadmium rod end body
Thread Class: 3a
Thread Diameter: 1.250 inches nominal
Thread Direction: right-hand
Thread Quantity Per Inch: 18
Thread Series Designator: unef

Frequently Asked Questions

Find quick answers to common questions about bearing: 21918. Explore technical specifications, installation tips, maintenance guidelines, regulatory requirements, and troubleshooting advice.

What is the FSCG of the NSN 3120-00-083-8917?: The FSCG of the NSN 3120-00-083-8917 is 3120

Does the NSN 3120-00-083-8917 have a Schedule B code assigned?: Yes, the Schedule B code is 8483308055

Does NSN 3120-00-083-8917 require demilitarization?: "commerce control list items (ccli) - mut to the point of scrap required outside the united states. Inside the united states, mut is required when the demil integrity code (ic) is "3" and mut is not required when the demic is "6" (note 8)"

Does NSN 3120-00-083-8917 contain precious materials?: Item does not contain precious metal.

Does NSN 3120-00-083-8917 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.