MS21155S4 Self-Aligning Plain Bearing

Comprehensive specifications and application details for: MS21155S4 Self-Aligning Plain Bearing.

Summary

Explore detailed summary information for bearing: MS21155S4. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Part Number: MS21155S4
Federal Supply Classification: 3120 Unmounted Plain Bearings
(NSN) National Stock Number: 3120-01-176-4042
Item Name Code: 13208
Federal Item Identification Guide: A045A0
Assigment Date: 04/11/1984

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.

groove external outer member lubrication feature, 27.0 rockwell c minimum and 36.0 rockwell c maximum outer race member hardness rating, 56.0 rockwell c minimum inner member hardness rating, 0.3410 inches minimum and 0.3430 inches maximum inner member width, 0.2495 inches minimum and 0.2500 inches maximum bore diameter

Datasheet

Below are the comprehensive technical specifications for bearing: 3120-01-176-4042 . Find dimensions, materials, tolerances, performance characteristics, etc.

Bore Diameter: 0.2495 inches minimum and 0.2500 inches maximum
Hardness Rating: 56.0 rockwell c minimum inner member
Hardness Rating: 27.0 rockwell c minimum and 36.0 rockwell c maximum outer race member
Inner Member Width: 0.3410 inches minimum and 0.3430 inches maximum
Lubrication Feature: groove external outer member
Lubrication Feature: groove internal inner member
Lubrication Feature: groove internal outer member
Lubrication Feature: perforation outer race member
Lubrication Feature: perforation inner member
Material Document And Classification: fed std 66 fed std 1st material response or ams 5630 assn std 2nd material response inner member
Material Document And Classification: mil-g-21164 mil spec single material response lubrication
Material Document And Classification: mil-s-5000 assn std 1st material response or mil-s-6758 assn std 2nd material response or mil-s-6050 assn std 3rd material response outer race member
Material: grease and disulfide molybdenum lubrication
Material: steel comp e4340 or steel comp 4130 or steel comp 8630 outer race member
Material: steel comp e52100 or steel comp 440c inner member
Outer Member Outside Diameter: 0.6557 inches minimum and 0.6562 inches maximum
Outer Member Width: 0.2450 inches minimum and 0.2550 inches maximum
Special Features: plating of inner race member to be 0.0002 in. min thick on spherical surfaces,0.0005 in. thick on faces
Specification/Standard Data: 96906-ms21155s4 government standard
Static Radial Load Rating: 7080 pounds
Style Designator: without insert or liner
Surface Treatment Document And Classification: qq-c-320,class 2 fed spec single treatment response inner member
Surface Treatment Document And Classification: qq-p-416,type 1,class 2 fed spec single treatment response outer race member
Surface Treatment: cadmium outer race member
Surface Treatment: chromium inner member

Frequently Asked Questions

Find quick answers to common questions about bearing: MS21155S4. Explore technical specifications, installation tips, maintenance guidelines, regulatory requirements, and troubleshooting advice.

What is the FSCG of the NSN 3120-01-176-4042?: The FSCG of the NSN 3120-01-176-4042 is 3120

Does the NSN 3120-01-176-4042 have a Schedule B code assigned?: Yes, the Schedule B code is 8482300040

Does NSN 3120-01-176-4042 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 3120-01-176-4042 contain precious materials?: Item does not contain precious metal.

Does NSN 3120-01-176-4042 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.