The Bearing Unit,roller, cataloged under National Stock Number 3130-00-618-6737, is classified within Federal Supply Class 3130 (Bearings, Mounted) of the Bearings group. The manufacturer of record is Morse Industrial Corp Sealmaster Bearing Div Sub of Emerson Electric Co. Government technical data includes 25 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3130-00-618-6737 |
| Primary Part Number | 550328 |
| Item Name | Bearing Unit,roller |
| FSC / FSG | 3130 / 31 — Bearings, Mounted |
| Manufacturer | Morse Industrial Corp Sealmaster Bearing Div Sub of Emerson Electric Co |
| Status | ACTIVE |
| Seal Type | LABYRINTH |
| Lubrication Material | GREASE |
| Lubrication Fitting Type | HYDRAULIC |
| Assembly Overall Length | 3.1250 INCHES NOMINAL IN |
| Internal Fit-Up Designation | STANDARD |
| Mounting Hole Type | ROUND, UNTHREADED |
| Rotating Element Locking Method | DIRECT |
| Seal Location | BOTH ENDS |
| Block Type | FIXED |
| Style Designator | FLANGE CARTRIDGE BLOCK |
| Mounting Hole Diameter | 0.4688 INCHES NOMINAL IN |
| Collar Location | ONE END |
| Features Provided | GROUND ROLLING ELEMENT GROOVE |
| Pilot Diameter | 4.4980 INCHES MINIMUM AND 4.5000 INCHES MAXIMUM IN |
| Alignment Type | SELF-ALIGNING |
| Rolling Element Groove Quantity | 2 |
| Bolt Circle Diameter | 5.3750 INCHES NOMINAL IN |
| Shaft End Type | OPEN |
| Bore Diameter | 1.9980 INCHES MINIMUM AND 2.0000 INCHES MAXIMUM IN |
| Material | IRON CAST HOUSING |
| Material | STEEL INNER LINER |
| Housing Length | 2.4375 INCHES NOMINAL IN |
| Housing Diameter | 6.3750 INCHES NOMINAL IN |
| Lubrication Fitting Angle From Horizontal Centerline | 90.0 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 |
| Part Number | Manufacturer |
|---|---|
| 550328 | Morse Industrial Corp Sealmaster Bearing Div Sub of Emerson Electric Co (USA) |
| ZBR200 | Rexnord Industries, Llc Div Aerosspace Bearing Operation (USA) |
| Reference | Meaning |
|---|---|
| 31J30 | C/1 Advisory reference — outside the item-of-supply concept Barber-Greene Co |
| FC432 | 5/9 Secondary reference Fmc Corp Link-Belt Div |
| FCB22432H | 5/9 Secondary reference Rexnord Industries, Llc Div Link-Belt Bearing Operation |
| RFP200 | 5/9 Secondary reference Morse Industrial Corp Sealmaster Bearing Div Sub of Emerson Electric Co |
| ZBR2200 | 5/9 Secondary reference Rexnord Industries, Llc Div Aerosspace Bearing Operation |
| FC432 | 3/9 Design control — primary reference Rexnord Industries, Llc Div Link-Belt Bearing Operation |
NSN 3130-00-618-6737 is a Bearing Unit,roller, manufactured by Morse Industrial Corp Sealmaster Bearing Div Sub of Emerson Electric Co, classified under FSC 3130, Bearings, Mounted. Status: active.
NSN 3130-00-618-6737 has 2 manufacturer part numbers on file: 550328 (Morse Industrial Corp Sealmaster Bearing Div Sub of Emerson Electric Co), ZBR200 (Rexnord Industries, Llc Div Aerosspace Bearing Operation).
Key specifications for 550328: Seal Type: LABYRINTH; Lubrication Material: GREASE; Lubrication Fitting Type: HYDRAULIC; Assembly Overall Length: 3.1250 INCHES NOMINAL IN. 25 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.