Model: MS21154-S-12

Self-aligning Plain Bearing

Properties:

Bore Diameter

Between 0.7495 inches and 0.7500 inches

Lubrication Material

Grease, mil-g-21164

Outer Member Outside Diameter

Between 1.4370 inches and 1.4375 inches

Outer Member Width

Between 0.5880 inches and 0.5930 inches

Inner Member Width

Between 0.7480 inches and 0.7500 inches

Static Radial Load Rating

46750 pounds

Hardness Rating

27.0 rockwell c outer race member and 36.0 rockwell c outer race member

Hardness Rating

56.0 rockwell c inner member

Lubrication Feature

Groove inner member and perforation inner member

Lubrication Feature

Groove outer race member and perforation outer race member

Material

Steel comp e52100 inner member or steel comp 440c inner member

Material

Steel comp e4340 outer race member or steel comp 4130 outer race member or steel comp 8630 outer race member

Material Specification

Ams 5630 assn standard 2nd material response inner member

Material Specification

Mil-s-5000 military specification 1st material response outer race member or mil-s-6758 military specification 2nd material response outer race member or mil-s-6050 military specification 3rd material response outer race member

Surface Treatment

Chromium inner member

Surface Treatment

Cadmium outer race member

Surface Treatment Specification

Qq-c-320, class 2 federal specification single treatment response inner member

Surface Treatment Specification

Qq-p-416, type 1, class 2 federal specification single treatment response outer race member

Style Designator

Without insert or liner with staking groove

Specification Data

96906-ms21154 government standard

NSN

3120-01-204-4839

Part Number

MS21154-S-12

Description

Bearing,plain,self-aligning

CAGE

81343

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.

Part MS21154-S-12 NSN 3120-01-204-4839

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

13208

FIIG:

A045A0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

2.4 X 2.4 X 1.7

Paclk Weight:

0.5000lbs

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

114850

UFC:

58880

LTL:

70.0

LCL:

WCC:

742

TCC:

SHC:

ACC:

Trailers/Vehicles

End Items End applications NSN 3120-01-204-4839 is a component of

B-2 Bomber (atb) Aircraft
013624550
Aircraft Structural Component Fitting

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Schedule B and Export

Schedule B: 8482300040
SITC: 74630
End Use: Industrial machines, other
NAICS: 332991
USDA: 1

Freight Class: Spherical roller bearings, single row