The Bearing Unit,ball, cataloged under National Stock Number 3130-01-280-6977, is classified within Federal Supply Class 3130 (Bearings, Mounted) of the Bearings group. Government technical data includes 29 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3130-01-280-6977 |
| 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 | 1.9375 INCHES NOMINAL IN |
| Housing Height | 5.7500 INCHES NOMINAL IN |
| Internal Fit-Up Designation | STANDARD |
| Mounting Hole Type | ROUND, UNTHREADED |
| Distance Between Grooves | 3.9688 INCHES NOMINAL IN |
| Rotating Element Locking Method | SETSCREW LOCKING COLLAR |
| Seal Location | BOTH ENDS |
| Block Type | FIXED |
| Style Designator | FRAME TYPE |
| Mounting Hole Diameter | 1.125 INCHES NOMINAL IN |
| Collar Location | ONE END |
| Housing Width | 4.7500 INCHES NOMINAL IN |
| Alignment Type | SELF-ALIGNING |
| Rolling Element Groove Quantity | 1 |
| Shaft End Type | OPEN |
| Bore Diameter | 1.9375 INCHES NOMINAL IN |
| Material | IRON CAST HOUSING |
| Material | STEEL BEARING |
| Material | PLASTIC POLYAMIDE NYLON SEAL |
| Housing Length | 2.3124 INCHES NOMINAL IN |
| Slot Width | 0.7500 INCHES NOMINAL IN |
| Height From Bottom of Base to Bore Centerline | 3.3750 INCHES NOMINAL IN |
| Groove Width | 0.6250 INCHES NOMINAL IN |
| Slot Length | 1.9375 INCHES NOMINAL IN |
| Lubrication Fitting Angle From Horizontal Centerline | 45.0 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 |
|---|---|
| TC-25-115/16 | 3/2 Design control — primary reference U.S. Government activity |
| 006281 | 5/9 Secondary reference Electronic Systems Design Inc |
NSN 3130-01-280-6977 is a Bearing Unit,ball, classified under FSC 3130, Bearings, Mounted. Status: active.
Key specifications for 3130-01-280-6977: Seal Type: LABYRINTH; Lubrication Material: GREASE; Lubrication Fitting Type: HYDRAULIC; Assembly Overall Length: 1.9375 INCHES NOMINAL IN. 29 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.