The Bearing,ball,duplex, cataloged under National Stock Number 3110-00-620-2792, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 16 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-00-620-2792 |
| Primary Part Number | SB1552-2 |
| Item Name | Bearing,ball,duplex |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Retainer Fabrication Method | MACHINEDMACHINED |
| Bearing Seal Type | CONTACTCONTACT |
| Bearing Preload Rating | 100.0 POUNDS NOMINAL100.0 POUNDS NOMINAL LBS |
| Surface Finish | GROUNDGROUND |
| Style Designator | COUNTERBORED OUTER RINGS, NON-SEPARABLE, BACK TO BACK MOUNTINGCOUNTERBORED OUTER RINGS, NON-SEPARABLE, BACK TO BACK MOUNTING |
| Overall Outside Diameter | 7.1240 INCHES MINIMUM AND 7.1240 INCHES MINIMUM AND 7.1250 INCHES MAXIMUM7.1250 INCHES MAXIMUM IN |
| Load Direction | RADIALRADIAL |
| Seal Quantity | 11 |
| Bore Diameter | 5.9990 INCHES MINIMUM AND 5.9990 INCHES MINIMUM AND 6.0000 INCHES MAXIMUM6.0000 INCHES MAXIMUM IN |
| Material | GREASE LUBRICATIONGREASE LUBRICATION |
| Material | PLASTIC RETAINERPLASTIC RETAINER |
| Material | RUBBER SYNTHETIC SEALRUBBER SYNTHETIC SEAL |
| Material | STEEL BALLSTEEL BALL |
| Material | STEEL INNER RINGSTEEL INNER RING |
| Material | STEEL OUTER RINGSTEEL OUTER RING |
| Lubrication Material Document and Classification | MIL-G-25537 MIL SPEC SINGLE MATERIAL RESPONSEMIL-G-25537 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 |
|---|---|
| SB1552-2 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
NSN 3110-00-620-2792 is a Bearing,ball,duplex, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-620-2792 has 1 manufacturer part number on file: SB1552-2 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for SB1552-2: Retainer Fabrication Method: MACHINEDMACHINED; Bearing Seal Type: CONTACTCONTACT; Bearing Preload Rating: 100.0 POUNDS NOMINAL100.0 POUNDS NOMINAL LBS; Surface Finish: GROUNDGROUND. 16 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.