PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

GB14A3Bearing,plain,self-Aligning

Northrop Grumman Systems Corporation · NSN 3120-00-063-2934 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-063-2934 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-063-2934. Primary manufacturer part number: GB14A3.
Features
  • Bearing,plain,self-Aligning — FSC 3120
  • Material: STEEL COMP E52100 INNER MEMBER
  • Lubrication Feature: PERFORATION OUTER RACE MEMBER
  • Surface Treatment: CHROMIUM INNER MEMBER
  • Surface Treatment: CADMIUM OUTER RACE MEMBER
  • Lubrication Feature: GROOVE EXTERNAL OUTER MEMBER
  • Lubrication Feature: GROOVE INTERNAL OUTER MEMBER
  • Material: COPPER ALLOY OUTER RACE MEMBER
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Comp E52100 Inner Member construction
General Description

The Bearing,plain,self-Aligning, cataloged under National Stock Number 3120-00-063-2934, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-00-063-2934
Primary Part NumberGB14A3
Item NameBearing,plain,self-Aligning
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation
StatusACTIVE
MaterialSTEEL COMP E52100 INNER MEMBER
Lubrication FeaturePERFORATION OUTER RACE MEMBER
Surface TreatmentCHROMIUM INNER MEMBER
Surface TreatmentCADMIUM OUTER RACE MEMBER
Lubrication FeatureGROOVE EXTERNAL OUTER MEMBER
Lubrication FeatureGROOVE INTERNAL OUTER MEMBER
MaterialCOPPER ALLOY OUTER RACE MEMBER
Lubrication FeaturePERFORATION INNER MEMBER
Outer Member Width0.2180 INCHES NOMINAL IN
Lubrication FeatureGROOVE INTERNAL INNER MEMBER
Bore Diameter0.1895 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN
Inner Member Width0.2760 INCHES MINIMUM AND 0.2810 INCHES MAXIMUM IN
Style DesignatorWITHOUT INSERT OR LINER
Outer Member Outside Diameter0.5620 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5310-01-236-9955 INTERCHANGEABLE
Washer,flat
6680-01-253-6782552-10 INTERCHANGEABLE
Indicator,rate of Flow
Draf Industries, Inc
4720-01-261-2510 INTERCHANGEABLE
Hose Assembly,nonmetallic
5975-01-656-563955210 INTERCHANGEABLE
Stuffing Tube
Exceltec Intl Corp
Cross-Reference Index
Part NumberManufacturer
AG3SP17 New Hampshire Ball Bearings Inc Div Astro Division (USA)
RPG-3A Radial Bearing Corporation Dba Radial Bearing Corp of Connecticu Div Radial Bearing Llc (USA)
KSBG3-10 Sargent Aerospace & Defense, Llc Dba Kahr Bearings (USA)
55210 Rbc Transport Dynamics Corp Div Rbc Transport Dynamics (USA)
GB14A3 U S Bearings (USA)
GB14A3 PRIMARY Northrop Grumman Systems Corporation (USA)
LHPB-3GA Roller Bearing Company of America, Inc. (USA)
Related Parts
5310-01-236-9955INTERCHANGEABLE
WASHER,FLAT
6680-01-253-6782INTERCHANGEABLE
INDICATOR,RATE OF FLOW
552-10
4720-01-261-2510INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
5975-01-656-5639INTERCHANGEABLE
STUFFING TUBE
55210

Frequently Asked Questions

What is NSN 3120-00-063-2934?

NSN 3120-00-063-2934 is a Bearing,plain,self-Aligning, manufactured by Northrop Grumman Systems Corporation, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-063-2934?

NSN 3120-00-063-2934 has 7 cross-referenced part numbers: AG3SP17 (New Hampshire Ball Bearings Inc Div Astro Division), RPG-3A (Radial Bearing Corporation Dba Radial Bearing Corp of Connecticu Div Radial Bearing Llc), KSBG3-10 (Sargent Aerospace & Defense, Llc Dba Kahr Bearings), 55210 (Rbc Transport Dynamics Corp Div Rbc Transport Dynamics), GB14A3 (U S Bearings) and 2 more.

What NSN replaces 3120-00-063-2934?

There are 4 known substitutes for 3120-00-063-2934: 5310-01-236-9955, 6680-01-253-6782, 4720-01-261-2510 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of GB14A3?

Key specifications for GB14A3: Material: STEEL COMP E52100 INNER MEMBER; Lubrication Feature: PERFORATION OUTER RACE MEMBER; Surface Treatment: CHROMIUM INNER MEMBER; Surface Treatment: CADMIUM OUTER RACE MEMBER. 14 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com