The Bearing,ball,duplex, cataloged under National Stock Number 3110-00-018-7204, 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 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-00-018-7204 |
| Primary Part Number | SB1056-2 |
| Item Name | Bearing,ball,duplex |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Skf Usa Inc. |
| Status | ACTIVE |
| Internal Clearance | 0.0028 INCHES MINIMUM RADIAL AND 0.0033 INCHES MAXIMUM RADIAL IN |
| Surface Finish | GROUND |
| Style Designator | COUNTERBORED OUTER RINGS, NON-SEPARABLE, FACE TO FACE MOUNTING |
| Overall Outside Diameter | 80.00 MILLIMETERS NOMINAL MM |
| Load Direction | ANGULAR |
| Standard Tolerance Designation | ABEC NO.3 |
| Bore Diameter | 2.1633 INCHES NOMINAL IN |
| Material | STEEL OUTER RING |
| Material | STEEL INNER RING |
| Material | COPPER ALLOY RETAINER |
| Material | STEEL BALL |
| 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 |
|---|---|
| SB1056-2 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| SB1056-2 PRIMARY | Skf Usa Inc. (USA) |
| Reference | Meaning |
|---|---|
| 1911RD401F | 5/1 Secondary reference Skf Usa Inc. |
| 3M9311WI2MBRDUE9655 | 5/9 Secondary reference Timken Co Div the Timken Company |
NSN 3110-00-018-7204 is a Bearing,ball,duplex, manufactured by Skf Usa Inc., classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-018-7204 has 2 manufacturer part numbers on file: SB1056-2 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), SB1056-2 (Skf Usa Inc.).
Key specifications for SB1056-2: Internal Clearance: 0.0028 INCHES MINIMUM RADIAL AND 0.0033 INCHES MAXIMUM RADIAL IN; Surface Finish: GROUND; Style Designator: COUNTERBORED OUTER RINGS, NON-SEPARABLE, FACE TO FACE MOUNTING; Overall Width: 26.00 MILLIMETERS NOMINAL MM. 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.