The Bearing,roller,track Roller, cataloged under National Stock Number 3110-01-324-9555, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is 2is Inc.. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-324-9555 |
| Primary Part Number | SW28897 |
| Item Name | Bearing,roller,track Roller |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | 2is Inc. |
| Status | ACTIVE |
| Style Designator | CYLINDRICAL TWO LIP INNER RING W/CENTERED ROLLER GUIDE, CYLINDRICAL OUTER RING SEPARABLE |
| Overall Outside Diameter | 4.6245 INCHES NOMINAL IN |
| Alignment Type | SELF-ALIGNING |
| Bore Diameter | 4.0000 INCHES NOMINAL IN |
| Material | COPPER ALLOY 953 OVERALL |
| Self-Alignment Location | INTERNAL |
| 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 |
|---|---|
| SW28897 PRIMARY | 2is Inc. (USA) |
| Reference | Meaning |
|---|---|
| SW28897 | 5/2 Secondary reference U.S. Government activity |
NSN 3110-01-324-9555 is a Bearing,roller,track Roller, manufactured by 2is Inc., classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-324-9555 has 1 manufacturer part number on file: SW28897 (2is Inc.).
Key specifications for SW28897: Style Designator: CYLINDRICAL TWO LIP INNER RING W/CENTERED ROLLER GUIDE, CYLINDRICAL OUTER RING SEPARABLE; Overall Width: 2.0000 INCHES NOMINAL IN; Overall Outside Diameter: 4.6245 INCHES NOMINAL IN; Alignment Type: SELF-ALIGNING. 6 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.