PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

HSBG9Bearing,plain,self-Aligning

Sargent Aerospace & Defense, Llc Dba Kahr Bearings · NSN 3120-00-287-8602 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-287-8602 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-287-8602. Primary manufacturer part number: HSBG9.
Features
  • Bearing,plain,self-Aligning — FSC 3120
  • Lubrication Feature: PERFORATION OUTER RACE MEMBER
  • Material: COPPER ALLOY OUTER RACE MEMBER
  • Surface Treatment: CHROMIUM INNER MEMBER
  • Lubrication Feature: GROOVE INTERNAL OUTER MEMBER
  • Style Designator: WITHOUT INSERT OR LINER
  • Lubrication Feature: GROOVE EXTERNAL OUTER MEMBER
  • Material: STEEL COMP E52100 INNER MEMBER
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Copper Alloy Outer Race Member construction
General Description

The Bearing,plain,self-Aligning, cataloged under National Stock Number 3120-00-287-8602, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Sargent Aerospace & Defense, Llc Dba Kahr Bearings. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-00-287-8602
Primary Part NumberHSBG9
Item NameBearing,plain,self-Aligning
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerSargent Aerospace & Defense, Llc Dba Kahr Bearings
StatusACTIVE
Lubrication FeaturePERFORATION OUTER RACE MEMBER
MaterialCOPPER ALLOY OUTER RACE MEMBER
Surface TreatmentCHROMIUM INNER MEMBER
Lubrication FeatureGROOVE INTERNAL OUTER MEMBER
Style DesignatorWITHOUT INSERT OR LINER
Lubrication FeatureGROOVE EXTERNAL OUTER MEMBER
MaterialSTEEL COMP E52100 INNER MEMBER
Outer Member Outside Diameter1.0932 INCHES MINIMUM AND 1.0937 INCHES MAXIMUM IN
Outer Member Width0.4320 INCHES MINIMUM AND 0.4420 INCHES MAXIMUM IN
Bore Diameter0.5620 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM IN
Inner Member Width0.5570 INCHES MINIMUM AND 0.5620 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5975-00-296-0788RB150-75 INTERCHANGEABLE
Adapter,electrical Conduit
Egs Electrical Group Appleton Div
5910-00-835-2663 INTERCHANGEABLE
Capacitor,variable,glass Dielect
6135-01-388-8376 INTERCHANGEABLE
Battery,nonrechargeable
5330-01-421-4997RB-9 INTERCHANGEABLE
Gasket
Buffaloes Fire Pump Inc. Dba R B Pump Co
5340-01-593-6066 INTERCHANGEABLE
Strap,elastic
Cross-Reference Index
Part NumberManufacturer
HSBG9 PRIMARY Sargent Aerospace & Defense, Llc Dba Kahr Bearings (USA)
RB9 Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp (USA)
HG9MILG3278 U S Bearings (USA)
Related Parts
5975-00-296-0788INTERCHANGEABLE
ADAPTER,ELECTRICAL CONDUIT
RB150-75
5910-00-835-2663INTERCHANGEABLE
CAPACITOR,VARIABLE,GLASS DIELECT
6135-01-388-8376INTERCHANGEABLE
BATTERY,NONRECHARGEABLE
5330-01-421-4997INTERCHANGEABLE
GASKET
RB-9
5340-01-593-6066INTERCHANGEABLE
STRAP,ELASTIC

Frequently Asked Questions

What is NSN 3120-00-287-8602?

NSN 3120-00-287-8602 is a Bearing,plain,self-Aligning, manufactured by Sargent Aerospace & Defense, Llc Dba Kahr Bearings, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-287-8602?

NSN 3120-00-287-8602 has 3 cross-referenced part numbers: HSBG9 (Sargent Aerospace & Defense, Llc Dba Kahr Bearings), RB9 (Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp), HG9MILG3278 (U S Bearings).

What NSN replaces 3120-00-287-8602?

There are 5 known substitutes for 3120-00-287-8602: 5975-00-296-0788, 5910-00-835-2663, 6135-01-388-8376 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of HSBG9?

Key specifications for HSBG9: Lubrication Feature: PERFORATION OUTER RACE MEMBER; Material: COPPER ALLOY OUTER RACE MEMBER; Surface Treatment: CHROMIUM INNER MEMBER; Lubrication Feature: GROOVE INTERNAL OUTER MEMBER. 11 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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