PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

R-8ABearing,plain,self-Aligning

Radial Bearing Corporation Dba Radial Bearing Corp of Connecticu Div Radial Bearing Llc · NSN 3120-00-808-8337 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-808-8337 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-808-8337. Primary manufacturer part number: R-8A.
Features
  • Bearing,plain,self-Aligning — FSC 3120
  • Material: COPPER ALLOY RACE INSERT
  • Lubrication Feature: PERFORATION OUTER RACE MEMBER
  • Lubrication Feature: GROOVE INTERNAL INNER MEMBER
  • Material: STEEL COMP 4130 OUTER RACE MEMBER
  • Lubrication Feature: GROOVE EXTERNAL OUTER MEMBER
  • Surface Treatment: CADMIUM OUTER RACE MEMBER
  • Material: STEEL COMP E52100 INNER MEMBER
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Copper Alloy Race Insert construction
General Description

The Bearing,plain,self-Aligning, cataloged under National Stock Number 3120-00-808-8337, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Radial Bearing Corporation Dba Radial Bearing Corp of Connecticu Div Radial Bearing Llc. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3120-00-808-8337
Primary Part NumberR-8A
Item NameBearing,plain,self-Aligning
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerRadial Bearing Corporation Dba Radial Bearing Corp of Connecticu Div Radial Bearing Llc
StatusCANCELLED
MaterialCOPPER ALLOY RACE INSERT
Lubrication FeaturePERFORATION OUTER RACE MEMBER
Lubrication FeatureGROOVE INTERNAL INNER MEMBER
MaterialSTEEL COMP 4130 OUTER RACE MEMBER
Lubrication FeatureGROOVE EXTERNAL OUTER MEMBER
Surface TreatmentCADMIUM OUTER RACE MEMBER
MaterialSTEEL COMP E52100 INNER MEMBER
Surface TreatmentCHROMIUM INNER MEMBER
Outer Member Width0.3900 INCHES NOMINAL IN
Style DesignatorWITH INSERT AND/OR LINER
Lubrication FeaturePERFORATION INNER MEMBER
Outer Member Outside Diameter0.9995 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM IN
Bore Diameter0.4995 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
Inner Member Width0.4950 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
2930-01-137-82137P2-10 INTERCHANGEABLE
Cap,filler Opening
Ellis & Watts International, Llc
Cross-Reference Index
Part NumberManufacturer
R-8A PRIMARY Radial Bearing Corporation Dba Radial Bearing Corp of Connecticu Div Radial Bearing Llc (USA)
LSS8G Roller Bearing Company of America, Inc. (USA)
Related Parts
2930-01-137-8213INTERCHANGEABLE
CAP,FILLER OPENING
7P2-10

Frequently Asked Questions

What is NSN 3120-00-808-8337?

NSN 3120-00-808-8337 is a Bearing,plain,self-Aligning, manufactured by Radial Bearing Corporation Dba Radial Bearing Corp of Connecticu Div Radial Bearing Llc, classified under FSC 3120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3120-00-808-8337?

NSN 3120-00-808-8337 has 2 cross-referenced part numbers: R-8A (Radial Bearing Corporation Dba Radial Bearing Corp of Connecticu Div Radial Bearing Llc), LSS8G (Roller Bearing Company of America, Inc.).

What NSN replaces 3120-00-808-8337?

There is 1 known substitute for 3120-00-808-8337: 2930-01-137-8213. Verify interchangeability with system specifications before substitution.

What are the specifications of R-8A?

Key specifications for R-8A: Material: COPPER ALLOY RACE INSERT; Lubrication Feature: PERFORATION OUTER RACE MEMBER; Lubrication Feature: GROOVE INTERNAL INNER MEMBER; Material: STEEL COMP 4130 OUTER RACE MEMBER. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3120-00-808-8337 still in active supply?

NSN 3120-00-808-8337 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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