PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

623-612BBearing,roller,tapered

The Timken Corporation · NSN 3110-00-227-2441 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-227-2441 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-227-2441. Primary manufacturer part number: 623-612B.
Features
  • Bearing,roller,tapered — FSC 3110
  • Cone Corner Radius: 0.1400 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Standout Width: 0.6562 INCHES NOMINAL IN
  • Bore Diameter: 2.2500 INCHES NOMINAL IN
  • Cup Width: 1.2500 INCHES NOMINAL IN
  • Cone Width: 1.6250 INCHES NOMINAL IN
  • Flange Width: 0.2813 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 3110-00-227-2441, 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 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3110-00-227-2441
Primary Part Number623-612B
Item NameBearing,roller,tapered
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerThe Timken Corporation
StatusCANCELLED
Cone Corner Radius0.1400 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Standout Width0.6562 INCHES NOMINAL IN
Bore Diameter2.2500 INCHES NOMINAL IN
Cup Width1.2500 INCHES NOMINAL IN
Cone Width1.6250 INCHES NOMINAL IN
Flange Width0.2813 INCHES NOMINAL IN
Cup Outside Diameter4.7500 INCHES NOMINAL IN
Style DesignatorSTRAIGHT BORE, FLANGED CUP, NORMAL ANGLE
Standard Tolerance DesignationAFBMA CLASS 2
Flange Outside Diameter5.0312 INCHES NOMINAL IN
Backface Corner Radius0.1250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5940-00-051-6257 INTERCHANGEABLE
Terminal,stud
4730-01-366-9997 INTERCHANGEABLE
Tee,tube
Cross-Reference Index
Part NumberManufacturer
623-612B Ntn Bearing Corporation of America (USA)
921500 Rexnord Industries Llc (USA)
623-612B PRIMARY The Timken Corporation (USA)
Related Parts
5940-00-051-6257INTERCHANGEABLE
TERMINAL,STUD
4730-01-366-9997INTERCHANGEABLE
TEE,TUBE

Frequently Asked Questions

What is NSN 3110-00-227-2441?

NSN 3110-00-227-2441 is a Bearing,roller,tapered, manufactured by The Timken Corporation, classified under FSC 3110 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3110-00-227-2441?

NSN 3110-00-227-2441 has 3 cross-referenced part numbers: 623-612B (Ntn Bearing Corporation of America), 921500 (Rexnord Industries Llc), 623-612B (The Timken Corporation).

What NSN replaces 3110-00-227-2441?

There are 2 known substitutes for 3110-00-227-2441: 5940-00-051-6257, 4730-01-366-9997. Verify interchangeability with system specifications before substitution.

What are the specifications of 623-612B?

Key specifications for 623-612B: Cone Corner Radius: 0.1400 INCHES NOMINAL IN; Material: STEEL OVERALL; Standout Width: 0.6562 INCHES NOMINAL IN; Bore Diameter: 2.2500 INCHES NOMINAL IN. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3110-00-227-2441 still in active supply?

NSN 3110-00-227-2441 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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