The Bearing Unit,roller, cataloged under National Stock Number 3130-01-253-3191, is classified within Federal Supply Class 3130 (Bearings, Mounted) of the Bearings group. The manufacturer of record is Rbc Aircraft Products, Inc.. Government technical data includes 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3130-01-253-3191 |
| Primary Part Number | BC56985 |
| Item Name | Bearing Unit,roller |
| FSC / FSG | 3130 / 31 — Bearings, Mounted |
| Manufacturer | Rbc Aircraft Products, Inc. |
| Status | ACTIVE |
| Internal Fit-Up Designation | STANDARD |
| Flange Thickness | 0.073 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN |
| Rotating Element Locking Method | STRAIGHT SLEEVE |
| Block Type | FIXED |
| Overall Outside Diameter | 1.115 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN |
| Alignment Type | RIGID |
| Rolling Element Groove Quantity | 1 |
| Shaft End Type | OPEN |
| Surface Treatment | CADMIUM HOUSING EXCLUDING BORE |
| Bore Diameter | 0.1895 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Housing Length | 0.620 INCHES MINIMUM AND 0.625 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 |
|---|---|
| BC56985 PRIMARY | Rbc Aircraft Products, Inc. (USA) |
| Reference | Meaning |
|---|---|
| BC56985 | 5/9 Secondary reference Groz-Beckert Usa Inc |
| BC56985 | 5/9 Secondary reference Timken Aerospace, Inc Dba Torrington Product |
NSN 3130-01-253-3191 is a Bearing Unit,roller, manufactured by Rbc Aircraft Products, Inc., classified under FSC 3130, Bearings, Mounted. Status: active.
NSN 3130-01-253-3191 has 1 manufacturer part number on file: BC56985 (Rbc Aircraft Products, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 3895-01-309-2901. Verify interchangeability with system specifications before substitution.
Key specifications for BC56985: Internal Fit-Up Designation: STANDARD; Flange Thickness: 0.073 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN; Rotating Element Locking Method: STRAIGHT SLEEVE; Block Type: FIXED. 13 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.