Model: MS21155S4

Self-aligning Plain Bearing

Special Features:

Plating of inner race member to be 0.0002 in. Min thick on spherical surfaces, 0.0005 in. Thick on faces

Properties:

Bore Diameter
Between 0.2495 inches and 0.2500 inches
Lubrication Material
Grease, mil-g-21164
Outer Member Outside Diameter
Between 0.6557 inches and 0.6562 inches
Outer Member Width
Between 0.2450 inches and 0.2550 inches
Inner Member Width
Between 0.3410 inches and 0.3430 inches
Static Radial Load Rating
7080 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 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
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
Fed standard 66 federal standard 1st material response inner member or ams 5630 assn standard 2nd material response inner member
Material Specification
Mil-s-5000 assn standard 1st material response outer race member or mil-s-6758 assn standard 2nd material response outer race member or mil-s-6050 assn standard 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
Specification Data
96906-ms21155s4 government standard
NSN
3120-01-176-4042
Part Number
MS21155S4
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 MS21155S4 NSN 3120-01-176-4042

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
13208
FIIG:
A045A0
Concept No.:
App. Key:
B
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
M
SPI No.:
SPI Rev.:
SPC Mkg:
51
LVL_A:
E
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
114850
UFC:
58880
LTL:
70.0
LCL:
--
WCC:
742
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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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

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