The Bearing Unit,ball, cataloged under National Stock Number 3130-01-034-0439, is classified within Federal Supply Class 3130 (Bearings, Mounted) of the Bearings group. The manufacturer of record is Morse Industrial Corp Sealmaster Bearing Div Sub of Emerson Electric Co. Government technical data includes 20 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 | 3130-01-034-0439 |
| Primary Part Number | ST-23 |
| Item Name | Bearing Unit,ball |
| FSC / FSG | 3130 / 31 — Bearings, Mounted |
| Manufacturer | Morse Industrial Corp Sealmaster Bearing Div Sub of Emerson Electric Co |
| Status | ACTIVE |
| Assembly Overall Length | 5.6875 INCHES NOMINAL IN |
| Housing Height | 5.0625 INCHES NOMINAL IN |
| Internal Fit-Up Designation | STANDARD |
| Rotating Element Locking Method | SETSCREW LOCKING COLLAR |
| Block Type | FIXED |
| Style Designator | FRAME TYPE |
| Collar Location | ONE END |
| Features Provided | GROUND ROLLING ELEMENT GROOVE |
| Housing Width | 4.0000 INCHES NOMINAL IN |
| Alignment Type | SELF-ALIGNING |
| Rolling Element Groove Quantity | 2 |
| Shaft End Type | CLOSED OR OPEN |
| Bore Diameter | 1.4375 INCHES NOMINAL IN |
| Material | STEEL HOUSING |
| Material | STEEL BEARING |
| Material | WOOL SEAL |
| Housing Length | 1.7500 INCHES NOMINAL IN |
| Height From Bottom of Base to Bore Centerline | 3.5000 INCHES NOMINAL IN |
| Groove Width | 0.5312 INCHES NOMINAL IN |
| Load Capability Type | RADIAL |
| 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 |
|---|---|
| ST-23 PRIMARY | Morse Industrial Corp Sealmaster Bearing Div Sub of Emerson Electric Co (USA) |
NSN 3130-01-034-0439 is a Bearing Unit,ball, manufactured by Morse Industrial Corp Sealmaster Bearing Div Sub of Emerson Electric Co, classified under FSC 3130, Bearings, Mounted. Status: active.
NSN 3130-01-034-0439 has 1 manufacturer part number on file: ST-23 (Morse Industrial Corp Sealmaster Bearing Div Sub of Emerson Electric Co).
Key specifications for ST-23: Assembly Overall Length: 5.6875 INCHES NOMINAL IN; Housing Height: 5.0625 INCHES NOMINAL IN; Internal Fit-Up Designation: STANDARD; Rotating Element Locking Method: SETSCREW LOCKING COLLAR. 20 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.