The Bearing Unit,ball, cataloged under National Stock Number 3130-00-552-4634, is classified within Federal Supply Class 3130 (Bearings, Mounted) of the Bearings group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3130-00-552-4634 |
| Primary Part Number | 123BM10390-501 |
| Item Name | Bearing Unit,ball |
| FSC / FSG | 3130 / 31 — Bearings, Mounted |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Seal Type | SELF-ALIGNING |
| Lubrication Material | GREASE |
| Lubrication Fitting Type | SELF LUBRICATED |
| Internal Fit-Up Designation | STANDARD |
| Rotating Element Locking Method | ECCENTRIC CAM LOCKING COLLAR |
| Seal Location | BOTH ENDS |
| Block Type | FIXED |
| Collar Location | ONE END |
| Alignment Type | SELF-ALIGNING |
| Shaft End Type | CLOSED OR OPEN |
| Bore Diameter | 2.0620 INCHES MINIMUM AND 2.0630 INCHES MAXIMUM 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 |
|---|---|
| 123BM10390-501 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 123BM10390-501 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 3130-00-552-4634 is a Bearing Unit,ball, manufactured by Northrop Grumman Systems Corporation, classified under FSC 3130, Bearings, Mounted. Status: active.
NSN 3130-00-552-4634 has 1 manufacturer part number on file: 123BM10390-501 (Northrop Grumman Systems Corporation).
Key specifications for 123BM10390-501: Seal Type: SELF-ALIGNING; Lubrication Material: GREASE; Lubrication Fitting Type: SELF LUBRICATED; Internal Fit-Up Designation: STANDARD. 12 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.