The Bearing,ball,annular, cataloged under National Stock Number 3110-00-155-9561, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Ntn Bearing Corporation of America. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 14 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-00-155-9561 |
| Primary Part Number | 1311W |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — No Item Name Available |
| Manufacturer | Ntn Bearing Corporation of America |
| Status | ACTIVE |
| Bore Shape | STRAIGHT |
| Inner Ring Width | 1.9375 INCHES NOMINAL IN |
| Material | STEEL OUTER RING |
| Style Designator | LOADING GROOVE, NON-SEPARABLE |
| Material | STEEL INNER RING |
| Material | STEEL BALL |
| Outer Ring Width | 29.00 MILLIMETERS NOMINAL MM |
| Surface Finish | GROUND |
| Internal Fit-Up Designation | STANDARD |
| Overall Outside Diameter | 120.00 MILLIMETERS NOMINAL MM |
| Bore Diameter | 55.00 MILLIMETERS NOMINAL MM |
| Load Direction | RADIAL |
| Standard Tolerance Designation | ABEC NO.1 |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 1311W PRIMARY | Ntn Bearing Corporation of America (USA) |
| 637662 | Westinghouse Electric Corp Power Generation-Generator Div (USA) |
| 705214 | Westinghouse Electric Corp (USA) |
| 1311W | Federal-Mogul Corp Government Sales Dept (USA) |
| 637662 | Westinghouse Electric Corp (USA) |
| 311WI PRIMARY | Skf Usa Inc. (USA) |
| 4311 | General Motors Llc Dba General Motors Llc (USA) |
| 705214 | Westinghouse Electric Corp Power Generation-Generator Div (USA) |
| WIR311W | Timken Co Div the Timken Company (USA) |
| 1311MWI | Schatz Bearing Corporation Dba Schatz Bearing Corp (USA) |
| 777953 | Westinghouse Electric Corp (USA) |
| 4311 | General Motors Corp Delco Moraine Ndh Div (USA) |
| 777953 | Westinghouse Electric Corp Power Generation-Generator Div (USA) |
| 4311 | General Motors Corp (USA) |
NSN 3110-00-155-9561 is a Bearing,ball,annular, manufactured by Ntn Bearing Corporation of America, classified under FSC 3110 (No Item Name Available). Status: active.
NSN 3110-00-155-9561 has 14 cross-referenced part numbers: 1311W (Ntn Bearing Corporation of America), 637662 (Westinghouse Electric Corp Power Generation-Generator Div), 705214 (Westinghouse Electric Corp), 1311W (Federal-Mogul Corp Government Sales Dept), 637662 (Westinghouse Electric Corp) and 9 more.
There are 12 known substitutes for 3110-00-155-9561: 6625-00-123-3103, 3110-00-156-1725, 5315-00-265-9197 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 1311W: Bore Shape: STRAIGHT; Inner Ring Width: 1.9375 INCHES NOMINAL IN; Material: STEEL OUTER RING; Style Designator: LOADING GROOVE, NON-SEPARABLE. 13 total characteristics are documented in the Federal Logistics Information System.