The Bearing,roller,tapered, cataloged under National Stock Number 3110-00-293-9296, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is The Timken Corporation. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-00-293-9296 |
| Primary Part Number | 78225-78549DX1S78225 |
| Item Name | Bearing,roller,tapered |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | The Timken Corporation |
| Status | ACTIVE |
| Retainer Fabrication Method | PRESSED |
| Cup Width | 2.0395 INCHES NOMINAL IN |
| Style Designator | STRAIGHT BORE, NORMAL ANGLE |
| Overall Outside Diameter | 5.5000 INCHES NOMINAL IN |
| Backface Corner Radius | 0.0620 INCHES NOMINAL IN |
| Cone Corner Radius | 0.1400 INCHES NOMINAL IN |
| Standout Width | 0.5115 INCHES NOMINAL IN |
| Cone Width | 3.0625 INCHES NOMINAL IN |
| Standard Tolerance Designation | AFBMA CLASS 2 |
| Bore Diameter | 2.2500 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 78225-78549DX1S78225 PRIMARY | The Timken Corporation (USA) |
| EL320-2-46 PRIMARY | Iwc Llc Dba Ideal Windlass Company (USA) |
| Reference | Meaning |
|---|---|
| 323466 | 3/2 Design control — primary reference U.S. Government activity |
| R7012-1REVPIECEN942 | 5/2 Secondary reference U.S. Government activity |
NSN 3110-00-293-9296 is a Bearing,roller,tapered, manufactured by The Timken Corporation, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-293-9296 has 2 manufacturer part numbers on file: 78225-78549DX1S78225 (The Timken Corporation), EL320-2-46 (Iwc Llc Dba Ideal Windlass Company).
2 possible matches (shared part number, not a government interchangeability claim): 2805-00-369-8737, 4820-01-011-9248. Verify interchangeability with system specifications before substitution.
Key specifications for 78225-78549DX1S78225: Retainer Fabrication Method: PRESSED; Cup Width: 2.0395 INCHES NOMINAL IN; Style Designator: STRAIGHT BORE, NORMAL ANGLE; Overall Width: 3.0625 INCHES NOMINAL IN. 11 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.