P21590 Self-Aligning Plain Bearing

Comprehensive specifications and application details for: P21590 Self-Aligning Plain Bearing.

Summary

Explore detailed summary information for bearing: P21590. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Part Number: P21590
Federal Supply Classification: 3120 Unmounted Plain Bearings
(NSN) National Stock Number: 3120-01-157-4883
Item Name Code: 13208
Federal Item Identification Guide: A045A0
Assigment Date: 07/06/1983

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 item consists of a bored precision ground ball (or spherical plain bearing) around which an outer ring is fitted. The assembly may be either separable or nonseparable. Excludes:bearing, plain, rod end and bearing, plain, spherical.

37.0 rockwell c nominal inner member hardness rating, 1.6820 inches minimum and 1.6870 inches maximum inner member width, 34.0 rockwell c minimum and 38.0 rockwell c maximum outer race member hardness rating, ams 5387 assn std single material response inner member material document and classification, 1.4995 inches minimum and 1.5000 inches maximum bore diameter

Datasheet

Below are the comprehensive technical specifications for bearing: 3120-01-157-4883 . Find dimensions, materials, tolerances, performance characteristics, etc.

Bore Diameter: 1.4995 inches minimum and 1.5000 inches maximum
Hardness Rating: 34.0 rockwell c minimum and 38.0 rockwell c maximum outer race member
Hardness Rating: 37.0 rockwell c nominal inner member
Inner Member Width: 1.6820 inches minimum and 1.6870 inches maximum
Material Document And Classification: ams 5387 assn std single material response inner member
Material Document And Classification: ams 5659 assn std single material response outer race member
Material: cobalt comp 6 inner member
Material: steel comp xm-12 outer race member
Outer Member Outside Diameter: 2.6870 inches minimum and 2.6875 inches maximum
Outer Member Width: 1.2180 inches minimum and 1.2280 inches maximum
Static Radial Load Rating: 174000 pounds
Style Designator: without insert or liner
Surface Treatment Document And Classification: e/m 967 per ps010(0.0003-0.0005thk);fsc-57606 mfr ref single treatment response inner member
Surface Treatment: lubricant dry film inner member

Replaces

The NSN 3120-01-157-4883 is used in place of the following discontinued or alternate items:

NSN	Name	Date
3110-01-160-4424	No Name Available	01/01/1989

Frequently Asked Questions

Find quick answers to common questions about bearing: P21590. Explore technical specifications, installation tips, maintenance guidelines, regulatory requirements, and troubleshooting advice.

What is the FSCG of the NSN 3120-01-157-4883?: The FSCG of the NSN 3120-01-157-4883 is 3120

Does the NSN 3120-01-157-4883 have a Schedule B code assigned?: Yes, the Schedule B code is 8482300040

Does NSN 3120-01-157-4883 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 3120-01-157-4883 contain precious materials?: Item does not contain precious metal.

Does NSN 3120-01-157-4883 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.