The Bearing Unit,ball, cataloged under National Stock Number 3130-00-277-0739, is classified within Federal Supply Class 3130 (Bearings, Mounted) of the Bearings group. Government technical data includes 23 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3130-00-277-0739 |
| Item Name | Bearing Unit,ball |
| FSC / FSG | 3130 / 31 — Bearings, Mounted |
| Status | ACTIVE |
| Seal Type | LABYRINTH |
| Lubrication Material | GREASE |
| Lubrication Fitting Type | HYDRAULIC |
| Assembly Overall Length | 2.5625 INCHES NOMINAL IN |
| Housing Height | 7.6250 INCHES NOMINAL IN |
| Internal Fit-Up Designation | STANDARD |
| Rotating Element Locking Method | DIRECT |
| Seal Location | BOTH ENDS |
| Block Type | FIXED |
| Style Designator | FRAME TYPE |
| Features Provided | GROUND ROLLING ELEMENT GROOVE |
| Housing Width | 5.7500 INCHES NOMINAL IN |
| Alignment Type | SELF-ALIGNING |
| Rolling Element Groove Quantity | 1 |
| Shaft End Type | OPEN |
| Bore Diameter | 2.1875 INCHES NOMINAL IN |
| Material | STEEL AND WOOL SEAL |
| Material | IRON CAST HOUSING |
| Housing Length | 1.5000 INCHES NOMINAL IN |
| Height From Bottom of Base to Bore Centerline | 4.6875 INCHES NOMINAL IN |
| Groove Width | 1.0625 INCHES NOMINAL IN |
| Lubrication Fitting Angle From Horizontal Centerline | 30.0 DEGREES NOMINAL |
| 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 |
| Reference | Meaning |
|---|---|
| MST35 | 3/9 Design control — primary reference Stephens-Adamson Inc a Sub of Allis-Chalmers Corp |
NSN 3130-00-277-0739 is a Bearing Unit,ball, classified under FSC 3130, Bearings, Mounted. Status: active.
Key specifications for 3130-00-277-0739: Seal Type: LABYRINTH; Lubrication Material: GREASE; Lubrication Fitting Type: HYDRAULIC; Assembly Overall Length: 2.5625 INCHES NOMINAL IN. 23 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.