PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

123804Bearing Unit,ball

Reliance Electric Company Dba Reliance & Dodge Brands · NSN 3130-01-109-1431 · FSC 3130 · No Item Name Available
Verified by PartsTable
NSN 3130-01-109-1431 — this item is cataloged by the U.S. Government under National Stock Number 3130-01-109-1431. Primary manufacturer part number: 123804.
Features
  • Bearing Unit,ball — FSC 3130
  • Seal Location: BOTH ENDS
  • Lubrication Fitting Angle From Horizontal Centerline: 45.0 DEGREES NOMINAL
  • Seal Type: CONTACT
  • Rolling Element Groove Quantity: 1
  • Housing Width: 5.5000 INCHES NOMINAL IN
  • Base Thickness: 0.7500 INCHES NOMINAL IN
  • Style Designator: PILLOW BLOCK, SOLID
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Rubber Synthetic and Steel Seal construction
General Description

The Bearing Unit,ball, cataloged under National Stock Number 3130-01-109-1431, is classified within Federal Supply Class 3130 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Reliance Electric Company Dba Reliance & Dodge Brands. Government technical data includes 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3130-01-109-1431
Primary Part Number123804
Item NameBearing Unit,ball
FSC / FSG3130 / 31 — No Item Name Available
ManufacturerReliance Electric Company Dba Reliance & Dodge Brands
StatusACTIVE
Seal LocationBOTH ENDS
Lubrication Fitting Angle From Horizontal Centerline45.0 DEGREES NOMINAL
Seal TypeCONTACT
Rolling Element Groove Quantity1
Housing Width5.5000 INCHES NOMINAL IN
Base Thickness0.7500 INCHES NOMINAL IN
Style DesignatorPILLOW BLOCK, SOLID
MaterialRUBBER SYNTHETIC AND STEEL SEAL
Height From Bottom of Base to Bore Centerline1.4375 INCHES NOMINAL IN
Load Capability TypeRADIAL AND THRUST
Bore Diameter0.8750 INCHES NOMINAL IN
Mounting Slot Width0.4375 INCHES NOMINAL IN
Center to Center Distance Between Mounting Holes Along Width3.6875 INCHES MINIMUM AND 4.5000 INCHES MAXIMUM IN
Mounting Hole TypeSLOTTED
Block TypeFIXED
Collar LocationONE END
Features ProvidedGROUND ROLLING ELEMENT GROOVE
MaterialSTEEL BEARING
Shaft End TypeOPEN
Housing Height2.7812 INCHES NOMINAL IN
MaterialIRON CAST HOUSING
Assembly Overall Length1.6250 INCHES NOMINAL IN
Internal Fit-Up DesignationSTANDARD
Mounting Slot Length0.8437 INCHES NOMINAL IN
Base Length1.6250 INCHES NOMINAL IN
Rotating Element Locking MethodSETSCREW LOCKING COLLAR
Lubrication Fitting TypeHYDRAULIC
Alignment TypeSELF-ALIGNING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5910-00-050-5105123-101 INTERCHANGEABLE
Capacitor,fixed,ceramic Dielectr
General Instrument Corporation Dba Motorola Div Motorola Mobility - Home Division
4130-00-060-8083 INTERCHANGEABLE
Filter Element,air Conditioning
5990-00-583-9594R1041-1A INTERCHANGEABLE
Synchro,differential Transmitter
Kearfott Corporation Div Guidance and Navigation Division
5340-00-597-4480NAS844-15 INTERCHANGEABLE
Cap,protective,dust and Moisture
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5950-00-892-8312SM-C-450410 INTERCHANGEABLE
Reactor
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5930-01-018-17391-2310-1 INTERCHANGEABLE
Switch,rotary
Electro Switch Corp. Dba Electro Switch Corp
6605-01-218-6204123804 INTERCHANGEABLE
Ring
Northrop Grumman Systems Corporation
4730-01-235-5782209P-12-4 INTERCHANGEABLE
Bushing,pipe
Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters
5340-01-727-6747 INTERCHANGEABLE
Shipping Cap
Cross-Reference Index
Part NumberManufacturer
123804 PRIMARY Reliance Electric Company Dba Reliance & Dodge Brands (USA)
123101 Reliance Electric Company Dba Reliance & Dodge Brands (USA)
SC 7/8 Reliance Electric Company Dba Reliance & Dodge Brands (USA)
SC7-8 PILLOW BLOCK Reliance Electric Company Dba Reliance & Dodge Brands (USA)
Related Parts
5910-00-050-5105INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
123-101
4130-00-060-8083INTERCHANGEABLE
FILTER ELEMENT,AIR CONDITIONING
5990-00-583-9594INTERCHANGEABLE
SYNCHRO,DIFFERENTIAL TRANSMITTER
R1041-1A
5340-00-597-4480INTERCHANGEABLE
CAP,PROTECTIVE,DUST AND MOISTURE
NAS844-15
5950-00-892-8312INTERCHANGEABLE
REACTOR
SM-C-450410
5930-01-018-1739INTERCHANGEABLE
SWITCH,ROTARY
1-2310-1
6605-01-218-6204INTERCHANGEABLE
RING
123804
4730-01-235-5782INTERCHANGEABLE
BUSHING,PIPE
209P-12-4
5340-01-727-6747INTERCHANGEABLE
SHIPPING CAP

Frequently Asked Questions

What is NSN 3130-01-109-1431?

NSN 3130-01-109-1431 is a Bearing Unit,ball, manufactured by Reliance Electric Company Dba Reliance & Dodge Brands, classified under FSC 3130 (No Item Name Available). Status: active.

What are the part numbers for NSN 3130-01-109-1431?

NSN 3130-01-109-1431 has 4 cross-referenced part numbers: 123804 (Reliance Electric Company Dba Reliance & Dodge Brands), 123101 (Reliance Electric Company Dba Reliance & Dodge Brands), SC 7/8 (Reliance Electric Company Dba Reliance & Dodge Brands), SC7-8 PILLOW BLOCK (Reliance Electric Company Dba Reliance & Dodge Brands).

What NSN replaces 3130-01-109-1431?

There are 9 known substitutes for 3130-01-109-1431: 5910-00-050-5105, 4130-00-060-8083, 5990-00-583-9594 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 123804?

Key specifications for 123804: Seal Location: BOTH ENDS; Lubrication Fitting Angle From Horizontal Centerline: 45.0 DEGREES NOMINAL; Seal Type: CONTACT; Rolling Element Groove Quantity: 1. 28 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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