The Bearing,ball,duplex, cataloged under National Stock Number 3110-01-228-9079, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Skf Usa Inc.. Government technical data includes 14 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-228-9079 |
| Primary Part Number | MRC215RDS ABEC1-20 |
| Item Name | Bearing,ball,duplex |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Skf Usa Inc. |
| Status | ACTIVE |
| Bearing Preload Rating | 690.0 POUNDS NOMINAL LBS |
| Surface Finish | GROUND |
| Bearing Preload Designation | HEAVY |
| Style Designator | LOADING GROOVE, NON-SEPARABLE |
| Overall Outside Diameter | 5.1173 INCHES MINIMUM AND 5.1189 INCHES MAXIMUM IN |
| Load Direction | ANGULAR |
| Standard Tolerance Designation | ABEC NO.1 |
| Bore Diameter | 2.9522 INCHES MINIMUM AND 2.9534 INCHES MAXIMUM IN |
| Material | STEEL COMP E52100 BALL |
| Material | GREASE LUBRICATION |
| Material | PLASTIC PHENOLIC CAGE |
| Material | STEEL COMP E52100 OUTER RING |
| Material | STEEL COMP E52100 INNER RING |
| Lubrication Material Document and Classification | MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE |
| 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 |
|---|---|
| MRC215RDS ABEC1-20 PRIMARY | Skf Usa Inc. (USA) |
| 172A1189-2 PRIMARY | General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems (USA) |
NSN 3110-01-228-9079 is a Bearing,ball,duplex, manufactured by Skf Usa Inc., classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-228-9079 has 2 manufacturer part numbers on file: MRC215RDS ABEC1-20 (Skf Usa Inc.), 172A1189-2 (General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems).
Key specifications for MRC215RDS ABEC1-20: Bearing Preload Rating: 690.0 POUNDS NOMINAL LBS; Surface Finish: GROUND; Bearing Preload Designation: HEAVY; Style Designator: LOADING GROOVE, NON-SEPARABLE. 14 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.