PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25581-25520Bearing,roller,tapered

The Timken Corporation · NSN 3110-00-809-9090 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-809-9090 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-809-9090. Primary manufacturer part number: 25581-25520.
Features
  • Bearing,roller,tapered — FSC 3110
  • Material: STEEL OVERALL
  • Style Designator: STRAIGHT BORE, NORMAL ANGLE
  • Cone Corner Radius: 0.0200 INCHES NOMINAL IN
  • Cone Width: 1.0000 INCHES NOMINAL IN
  • Bore Diameter: 1.7500 INCHES NOMINAL IN
  • Standard Tolerance Designation: AFBMA CLASS 2
  • Standout Width: 0.1875 INCHES NOMINAL IN
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Overall construction
General Description

The Bearing,roller,tapered, cataloged under National Stock Number 3110-00-809-9090, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is The Timken Corporation. Government technical data includes 11 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: Active.

Technical Specifications
ParameterValue
NSN3110-00-809-9090
Primary Part Number25581-25520
Item NameBearing,roller,tapered
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerThe Timken Corporation
StatusACTIVE
MaterialSTEEL OVERALL
Style DesignatorSTRAIGHT BORE, NORMAL ANGLE
Cone Corner Radius0.0200 INCHES NOMINAL IN
Cone Width1.0000 INCHES NOMINAL IN
Bore Diameter1.7500 INCHES NOMINAL IN
Standard Tolerance DesignationAFBMA CLASS 2
Standout Width0.1875 INCHES NOMINAL IN
Cup Width0.7500 INCHES NOMINAL IN
Retainer Fabrication MethodPRESSED
Backface Corner Radius0.0310 INCHES NOMINAL IN
Overall Outside Diameter3.2650 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
2915-00-224-529522321-1 INTERCHANGEABLE
Butterfly,fuel Valve
Eaton Corporation Dba Airframe Div Fuel & Motion Control Systems
Cross-Reference Index
Part NumberManufacturer
25581-25520 PRIMARY The Timken Corporation (USA)
223211 Clark Equipment Co Transmission Div (USA)
Related Parts
2915-00-224-5295INTERCHANGEABLE
BUTTERFLY,FUEL VALVE
22321-1

Frequently Asked Questions

What is NSN 3110-00-809-9090?

NSN 3110-00-809-9090 is a Bearing,roller,tapered, manufactured by The Timken Corporation, classified under FSC 3110 (No Item Name Available). Status: active.

What are the part numbers for NSN 3110-00-809-9090?

NSN 3110-00-809-9090 has 2 cross-referenced part numbers: 25581-25520 (The Timken Corporation), 223211 (Clark Equipment Co Transmission Div).

What NSN replaces 3110-00-809-9090?

There is 1 known substitute for 3110-00-809-9090: 2915-00-224-5295. Verify interchangeability with system specifications before substitution.

What are the specifications of 25581-25520?

Key specifications for 25581-25520: Material: STEEL OVERALL; Style Designator: STRAIGHT BORE, NORMAL ANGLE; Cone Corner Radius: 0.0200 INCHES NOMINAL IN; Cone Width: 1.0000 INCHES NOMINAL IN. 12 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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