The Bearing,plain,self-Aligning, cataloged under National Stock Number 3120-00-229-0285, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Sargent Aerospace & Defense, Llc Dba Kahr Bearings. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-00-229-0285 |
| Primary Part Number | KSB4-6 |
| Item Name | Bearing,plain,self-Aligning |
| FSC / FSG | 3120 / 31 — No Item Name Available |
| Manufacturer | Sargent Aerospace & Defense, Llc Dba Kahr Bearings |
| Status | ACTIVE |
| Static Radial Load Rating | 8400 POUNDS LBS |
| Outer Member Outside Diameter | 0.6557 INCHES MINIMUM AND 0.6562 INCHES MAXIMUM IN |
| Inner Member Width | 0.3380 INCHES MINIMUM AND 0.3430 INCHES MAXIMUM IN |
| Material | STEEL COMP E52100 INNER MEMBER |
| Outer Member Width | 0.2450 INCHES MINIMUM AND 0.2550 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING OUTER RACE MEMBER |
| Material | GREASE AND DISULFIDE MOLYBDENUM LUBRICATION |
| Surface Treatment | CHROMIUM INNER MEMBER |
| Style Designator | WITHOUT INSERT OR LINER |
| Hardness Rating | 55.0 ROCKWELL C MINIMUM INNER MEMBER |
| Material Document and Classification | MIL-G-21164 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION |
| Hardness Rating | 23.0 ROCKWELL C MINIMUM OUTER RACE MEMBER |
| Bore Diameter | 0.2495 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| C2866-4 | Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company (USA) |
| KSB4-6 PRIMARY | Sargent Aerospace & Defense, Llc Dba Kahr Bearings (USA) |
| NG4 PRIMARY | Roller Bearing Company of America, Inc. (USA) |
| 55127 PRIMARY | Rbc Transport Dynamics Corp Div Rbc Transport Dynamics (USA) |
NSN 3120-00-229-0285 is a Bearing,plain,self-Aligning, manufactured by Sargent Aerospace & Defense, Llc Dba Kahr Bearings, classified under FSC 3120 (No Item Name Available). Status: active.
NSN 3120-00-229-0285 has 4 cross-referenced part numbers: C2866-4 (Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company), KSB4-6 (Sargent Aerospace & Defense, Llc Dba Kahr Bearings), NG4 (Roller Bearing Company of America, Inc.), 55127 (Rbc Transport Dynamics Corp Div Rbc Transport Dynamics).
There are 4 known substitutes for 3120-00-229-0285: 2910-00-312-6223, 4540-00-346-6613, 6930-00-512-2147 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for KSB4-6: Static Radial Load Rating: 8400 POUNDS LBS; Outer Member Outside Diameter: 0.6557 INCHES MINIMUM AND 0.6562 INCHES MAXIMUM IN; Inner Member Width: 0.3380 INCHES MINIMUM AND 0.3430 INCHES MAXIMUM IN; Material: STEEL COMP E52100 INNER MEMBER. 13 total characteristics are documented in the Federal Logistics Information System.