PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

BACB10A398GCM2Bearing,plain,self-Aligning

Rbc Specline Inc Dba Specline Inc · NSN 3120-01-029-8995 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-01-029-8995 — this item is cataloged by the U.S. Government under National Stock Number 3120-01-029-8995. Primary manufacturer part number: BACB10A398GCM2.
Features
  • Bearing,plain,self-Aligning — FSC 3120
  • Static Radial Load Rating: 12800 POUNDS LBS
  • Inner Member Width: 0.4000 INCHES MINIMUM AND 0.4050 INCHES MAXIMUM IN
  • Outer Member Width: 0.3220 INCHES MINIMUM AND 0.3320 INCHES MAXIMUM IN
  • Outer Member Outside Diameter: 1.0620 INCHES MINIMUM AND 1.0625 INCHES MAXIMUM IN
  • Material: STEEL COMP E52100 INNER MEMBER
  • Style Designator: WITHOUT INSERT OR LINER
  • Material Document and Classification: MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION
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 3120-01-029-8995, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Rbc Specline Inc Dba Specline Inc. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 15 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-01-029-8995
Primary Part NumberBACB10A398GCM2
Item NameBearing,plain,self-Aligning
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerRbc Specline Inc Dba Specline Inc
StatusACTIVE
Static Radial Load Rating12800 POUNDS LBS
Inner Member Width0.4000 INCHES MINIMUM AND 0.4050 INCHES MAXIMUM IN
Outer Member Width0.3220 INCHES MINIMUM AND 0.3320 INCHES MAXIMUM IN
Outer Member Outside Diameter1.0620 INCHES MINIMUM AND 1.0625 INCHES MAXIMUM IN
MaterialSTEEL COMP E52100 INNER MEMBER
Style DesignatorWITHOUT INSERT OR LINER
Material Document and ClassificationMIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION
Hardness Rating57.0 ROCKWELL C MINIMUM AND 61.0 ROCKWELL C MAXIMUM INNER MEMBER
MaterialCOPPER ALLOY OUTER RACE MEMBER
Surface TreatmentCHROMIUM INNER MEMBER
MaterialLUBRICANT DRY FILM OR GREASE LUBRICATION
Bore Diameter0.7495 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
Lubrication FeatureGROOVE EXTERNAL OUTER MEMBER
Surface TreatmentCADMIUM OUTER RACE MEMBER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4730-00-014-4303SAE J512 2 010111B INTERCHANGEABLE
Nut,tube Coupling
Sae International Dba Sae International
6130-00-479-0461 INTERCHANGEABLE
Power Supply
5133-00-838-5282 INTERCHANGEABLE
Drill,twist
5365-00-983-4156 INTERCHANGEABLE
Ring,pump Seal
5133-00-988-5695 INTERCHANGEABLE
Drill,twist
5930-01-399-223455018 INTERCHANGEABLE
Switch,toggle
Cole Hersee Company
6130-01-406-36040950-2278 INTERCHANGEABLE
Power Supply
Keysight Technologies Inc
6115-01-608-044355018 INTERCHANGEABLE
Guard,fan Impeller
Nmb Technologies Corporation
5330-01-615-0686SWS718A-09-GASKET-55018 INTERCHANGEABLE
Gasket
Flowserve Inc
6130-01-688-005055018 INTERCHANGEABLE
Charger,battery
Logos Imaging Llc
Cross-Reference Index
Part NumberManufacturer
BACB10A398GCM2 PRIMARY Rbc Specline Inc Dba Specline Inc (USA)
BACB10A398GCM2 PRIMARY Roller Bearing Company of America, Inc. (USA)
BACB10A398GCM2 PRIMARY Timken Aurora Bearing Company (USA)
ASSB12-23 New Hampshire Ball Bearings Inc Div Astro Division (USA)
BACB10A398GCM2 Sargent Aerospace & Defense, Llc Dba Kahr Bearings (USA)
55018 Rbc Transport Dynamics Corp Div Rbc Transport Dynamics (USA)
BLN-12565-GC Rbc Southwest Products, Inc. (USA)
KSSB-12-5 Sargent Aerospace & Defense, Llc Dba Kahr Bearings (USA)
BACB10A398GCM2 PRIMARY Rbc Southwest Products, Inc. (USA)
HGL-12-102 U S Bearings (USA)
BACB10A398GCM2 PRIMARY U S Bearings (USA)
BACB10A398GCM2 PRIMARY New Hampshire Ball Bearings Inc Div Astro Division (USA)
ABW12-101 New Hampshire Ball Bearings Inc Div Precision Division (USA)
BACB10A398GCM2 The Boeing Company Div Defense (USA)
BACB10A398GCM2 PRIMARY Rbc Transport Dynamics Corp Div Rbc Transport Dynamics (USA)
Related Parts
4730-00-014-4303INTERCHANGEABLE
NUT,TUBE COUPLING
SAE J512 2 010111B
6130-00-479-0461INTERCHANGEABLE
POWER SUPPLY
5133-00-838-5282INTERCHANGEABLE
DRILL,TWIST
5365-00-983-4156INTERCHANGEABLE
RING,PUMP SEAL
5133-00-988-5695INTERCHANGEABLE
DRILL,TWIST
5930-01-399-2234INTERCHANGEABLE
SWITCH,TOGGLE
55018
6130-01-406-3604INTERCHANGEABLE
POWER SUPPLY
0950-2278
6115-01-608-0443INTERCHANGEABLE
GUARD,FAN IMPELLER
55018
5330-01-615-0686INTERCHANGEABLE
GASKET
SWS718A-09-GASKET-55018
6130-01-688-0050INTERCHANGEABLE
CHARGER,BATTERY
55018
3120-01-689-7027INTERCHANGEABLE
BEARING,PLAIN,SELF-ALIGNING
5355-01-713-9561INTERCHANGEABLE
DIAL,CONTROL
55-018

Frequently Asked Questions

What is NSN 3120-01-029-8995?

NSN 3120-01-029-8995 is a Bearing,plain,self-Aligning, manufactured by Rbc Specline Inc Dba Specline Inc, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-01-029-8995?

NSN 3120-01-029-8995 has 15 cross-referenced part numbers: BACB10A398GCM2 (Rbc Specline Inc Dba Specline Inc), BACB10A398GCM2 (Roller Bearing Company of America, Inc.), BACB10A398GCM2 (Timken Aurora Bearing Company), ASSB12-23 (New Hampshire Ball Bearings Inc Div Astro Division), BACB10A398GCM2 (Sargent Aerospace & Defense, Llc Dba Kahr Bearings) and 10 more.

What NSN replaces 3120-01-029-8995?

There are 12 known substitutes for 3120-01-029-8995: 4730-00-014-4303, 6130-00-479-0461, 5133-00-838-5282 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of BACB10A398GCM2?

Key specifications for BACB10A398GCM2: Static Radial Load Rating: 12800 POUNDS LBS; Inner Member Width: 0.4000 INCHES MINIMUM AND 0.4050 INCHES MAXIMUM IN; Outer Member Width: 0.3220 INCHES MINIMUM AND 0.3320 INCHES MAXIMUM IN; Outer Member Outside Diameter: 1.0620 INCHES MINIMUM AND 1.0625 INCHES MAXIMUM IN. 14 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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