PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40509Bearing,roller,cylindrical

Skf Usa Inc. · NSN 3110-00-727-7278 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-727-7278 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-727-7278. Primary manufacturer part number: 40509.
Features
  • Bearing,roller,cylindrical — FSC 3110
  • Internal Fit-Up Designation: STANDARD
  • Material: COPPER ALLOY RETAINER
  • Style Designator: SINGLE ROW, ONE-DIRECTION LOCATING, TWO LIP INNER RING, ONE LIP OUTER RING, SEPARABLE
  • Material: STEEL COMP E52100 ROLLER
  • Material: STEEL COMP E52100 OUTER RING
  • Material: STEEL COMP E52100 INNER RING
  • Surface Finish: GROUND
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Copper Alloy Retainer construction
General Description

The Bearing,roller,cylindrical, cataloged under National Stock Number 3110-00-727-7278, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Skf Usa Inc.. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 3 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
NSN3110-00-727-7278
Primary Part Number40509
Item NameBearing,roller,cylindrical
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerSkf Usa Inc.
StatusACTIVE
Internal Fit-Up DesignationSTANDARD
MaterialCOPPER ALLOY RETAINER
Style DesignatorSINGLE ROW, ONE-DIRECTION LOCATING, TWO LIP INNER RING, ONE LIP OUTER RING, SEPARABLE
MaterialSTEEL COMP E52100 ROLLER
MaterialSTEEL COMP E52100 OUTER RING
MaterialSTEEL COMP E52100 INNER RING
Surface FinishGROUND
Bore Diameter1.1811 INCHES NOMINAL IN
Overall Outside Diameter1.8504 INCHES NOMINAL IN
Bore ShapeSTRAIGHT
Standard Tolerance DesignationRBEC NO.1
Locating FeatureONE DIRECTION
Retainer Fabrication MethodMACHINED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
3455-01-044-4150716-091616 INTERCHANGEABLE
Cutter,milling,end
Doall Baltimore Company
6240-01-272-179740509 INTERCHANGEABLE
Lamp,metal Halide
Venture Lighting International, Inc. Dba Venture Lighting Intl
4730-01-321-6414 INTERCHANGEABLE
Adapter,straight,pipe to Tube
5930-01-343-53944585-01 INTERCHANGEABLE
Switch,lock
Drs Technologies Canada Ltd
Cross-Reference Index
Part NumberManufacturer
RFB006-33 Mpb Corporation Dba Mpb Corp (USA)
40509 PRIMARY Skf Usa Inc. (USA)
40509 PRIMARY Mpb Corporation Dba Mpb Corp (USA)
458501 Skf Usa Inc. (USA)
458501SUN40509 Skf Usa Inc. (USA)
R1906D-SPECIAL Skf Usa Inc. (USA)
40509 Hamilton Sundstrand Corporation (USA)
Related Parts
3455-01-044-4150INTERCHANGEABLE
CUTTER,MILLING,END
716-091616
6240-01-272-1797INTERCHANGEABLE
LAMP,METAL HALIDE
40509
4730-01-321-6414INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
5930-01-343-5394INTERCHANGEABLE
SWITCH,LOCK
4585-01

Frequently Asked Questions

What is NSN 3110-00-727-7278?

NSN 3110-00-727-7278 is a Bearing,roller,cylindrical, manufactured by Skf Usa Inc., classified under FSC 3110 (No Item Name Available). Status: active.

What are the part numbers for NSN 3110-00-727-7278?

NSN 3110-00-727-7278 has 7 cross-referenced part numbers: RFB006-33 (Mpb Corporation Dba Mpb Corp), 40509 (Skf Usa Inc.), 40509 (Mpb Corporation Dba Mpb Corp), 458501 (Skf Usa Inc.), 458501SUN40509 (Skf Usa Inc.) and 2 more.

What NSN replaces 3110-00-727-7278?

There are 4 known substitutes for 3110-00-727-7278: 3455-01-044-4150, 6240-01-272-1797, 4730-01-321-6414 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40509?

Key specifications for 40509: Internal Fit-Up Designation: STANDARD; Material: COPPER ALLOY RETAINER; Style Designator: SINGLE ROW, ONE-DIRECTION LOCATING, TWO LIP INNER RING, ONE LIP OUTER RING, SEPARABLE; Material: STEEL COMP E52100 ROLLER. 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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