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.

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

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.