The Bearing Unit,roller, cataloged under National Stock Number 3130-00-145-6977, 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 24 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3130-00-145-6977 |
| Primary Part Number | MBR2207 |
| Item Name | Bearing Unit,roller |
| FSC / FSG | 3130 / 31 — Bearings, Mounted |
| Manufacturer | Rexnord Industries, Llc Div Aerosspace Bearing Operation |
| Status | ACTIVE |
| Seal Type | CONTACT |
| Lubrication Material | GREASE |
| Lubrication Fitting Type | HYDRAULIC |
| Assembly Overall Length | 3.5000 INCHES NOMINAL IN |
| Internal Fit-Up Designation | STANDARD |
| Mounting Hole Type | ROUND, UNTHREADED |
| Rotating Element Locking Method | SETSCREW LOCKING COLLAR |
| Seal Location | BOTH ENDS |
| Style Designator | FLANGE CARTRIDGE BLOCK |
| Mounting Hole Diameter | 0.5000 INCHES NOMINAL IN |
| Collar Location | ONE END |
| Features Provided | GROUND ROLLING ELEMENT GROOVE |
| Pilot Diameter | 5.4980 INCHES MINIMUM AND 5.5000 INCHES MAXIMUM IN |
| Alignment Type | SELF-ALIGNING |
| Rolling Element Groove Quantity | 2 |
| Bolt Circle Diameter | 6.5000 INCHES NOMINAL IN |
| Bore Diameter | 2.4375 INCHES NOMINAL IN |
| Material | STEEL BEARING SURFACE |
| Material | IRON CAST HOUSING |
| Material | RUBBER SEAL |
| Housing Length | 2.6250 INCHES NOMINAL IN |
| Housing Diameter | 7.6250 INCHES NOMINAL IN |
| Lubrication Fitting Angle From Horizontal Centerline | 90.0 DEGREES NOMINAL |
| Load Capability Type | RADIAL AND THRUST |
| 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 |
|---|---|
| MBR2207 PRIMARY | Rexnord Industries, Llc Div Aerosspace Bearing Operation (USA) |
| Reference | Meaning |
|---|---|
| 30E77 | C/1 Advisory reference — outside the item-of-supply concept Minnpar, Llc Dba Minnpar |
| MBR207 | 5/9 Secondary reference Rexnord Industries, Llc Div Aerosspace Bearing Operation |
| 30E77 | 5/9 Secondary reference Barber-Greene Co |
NSN 3130-00-145-6977 is a Bearing Unit,roller, manufactured by Rexnord Industries, Llc Div Aerosspace Bearing Operation, classified under FSC 3130, Bearings, Mounted. Status: active.
NSN 3130-00-145-6977 has 1 manufacturer part number on file: MBR2207 (Rexnord Industries, Llc Div Aerosspace Bearing Operation).
Key specifications for MBR2207: Seal Type: CONTACT; Lubrication Material: GREASE; Lubrication Fitting Type: HYDRAULIC; Assembly Overall Length: 3.5000 INCHES NOMINAL IN. 24 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.