Model: BLFN-4-318-1

Self-aligning Plain Bearing

Properties:

Bore Diameter
Between 0.2495 inches and 0.2500 inches
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 0.3730 inches and 0.3750 inches
Static Radial Load Rating
6040 pounds
Hardness Rating
23.0 rockwell c outer race member and 35.0 rockwell c outer race member
Hardness Rating
55.0 rockwell c inner member and 62.0 rockwell c inner member
Lubrication Feature
Self-lubricating liner bore liner
Functional Description
Used to 325.0 degrees f max
Material
Plastic polytetrafluoroethylene race liner
Material
Steel comp 440c inner member
Material
Steel comp 630 outer race member or steel comp 631 outer race member or steel comp 410 outer race member
Material Specification
Ams5630, uns s44004 assn standard single material response inner member
Material Specification
Ams5643, uns s17400 assn standard 1st material response outer race member or ams5528, uns s17700 assn standard 2nd material response outer race member or aisi/sae j405, uns s41000 assn standard 3rd material response outer race member
Relationship To Similar Equipment
Similar to nsn 3120-00-332-4401 mfr standard r/n 76301-st4m137-4
Style Designator
With insert and/or liner
Specification Data
96906-ms21233 government standard
NSN
3120-01-117-0032
Part Number
BLFN-4-318-1
Description
Bearing,plain,self-aligning
CAGE
81376

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 BLFN-4-318-1 NSN 3120-01-117-0032

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

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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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