The Bearing Unit,ball, cataloged under National Stock Number 3130-01-394-1981, is classified within Federal Supply Class 3130 (Bearings, Mounted) of the Bearings group. The manufacturer of record is Rexnord Industries, Llc Div Aerosspace Bearing Operation. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3130-01-394-1981 |
| Primary Part Number | NC-25-1 |
| Item Name | Bearing Unit,ball |
| FSC / FSG | 3130 / 31 — Bearings, Mounted |
| Manufacturer | Rexnord Industries, Llc Div Aerosspace Bearing Operation |
| Status | ACTIVE |
| Seal Type | LABYRINTH |
| Temp Rating | -65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF |
| Lubrication Fitting Type | PIPE PLUG |
| Assembly Overall Length | 1.440 INCHES NOMINAL IN |
| Housing Height | 2.810 INCHES NOMINAL IN |
| Seal Location | BOTH ENDS |
| Block Type | FIXED |
| Style Designator | PILLOW BLOCK, SOLID |
| Center to Center Distance Between Mounting Holes Along Width | 4.562 INCHES NOMINAL IN |
| Housing Width | 5.500 INCHES NOMINAL IN |
| Base Length | 0.766 INCHES NOMINAL IN |
| Rolling Element Groove Quantity | 1 |
| Surface Treatment | CHROMIUM HOUSING |
| Base Thickness | 0.590 INCHES NOMINAL IN |
| Bore Diameter | 1.0000 INCHES NOMINAL IN |
| Material | IRON CAST HOUSING |
| Height From Bottom of Base to Bore Centerline | 1.440 INCHES NOMINAL IN |
| Lubrication Fitting Angle From Horizontal Centerline | 90.0 DEGREES NOMINAL |
| Load Capability Type | RADIAL |
| Mounting Slot Width | 0.375 INCHES NOMINAL IN |
| 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 |
|---|---|
| NC-25-1 PRIMARY | Rexnord Industries, Llc Div Aerosspace Bearing Operation (USA) |
| Reference | Meaning |
|---|---|
| A3142901 | 1/2 Source control — Government-approved source U.S. Government activity |
| NC-25-1 | 5/9 Secondary reference U.S. Government activity |
NSN 3130-01-394-1981 is a Bearing Unit,ball, manufactured by Rexnord Industries, Llc Div Aerosspace Bearing Operation, classified under FSC 3130, Bearings, Mounted. Status: active.
NSN 3130-01-394-1981 has 1 manufacturer part number on file: NC-25-1 (Rexnord Industries, Llc Div Aerosspace Bearing Operation).
Key specifications for NC-25-1: Seal Type: LABYRINTH; Temp Rating: -65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF; Lubrication Fitting Type: PIPE PLUG; Assembly Overall Length: 1.440 INCHES NOMINAL IN. 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.