The Bearing,roller,cylindrical, cataloged under National Stock Number 3110-00-075-2227, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 15 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-00-075-2227 |
| Primary Part Number | 538623 |
| Item Name | Bearing,roller,cylindrical |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Internal Clearance | 0.0028 INCHES MINIMUM RADIAL AND 0.0038 INCHES MAXIMUM RADIAL IN |
| Locating Feature | NONLOCATING |
| Surface Finish | GROUND |
| Style Designator | SINGLE ROW, ONE-DIRECTION LOCATING, ONE LIP INNER RING, TWO LIP OUTER RING, ROLLER RETAINMENT RING ON INNER RING, NON-SEPARABLE |
| Material Document and Classification | PWA 725,97497 MFR REF 1ST MATERIAL RESPONSE OUTER RING |
| Material Document and Classification | PWA 725,97497 MFR REF 2ND MATERIAL RESPONSE INNER RING |
| Material Document and Classification | PWA 725,97497 MFR REF 3RD MATERIAL RESPONSE ROLLER |
| Overall Outside Diameter | 3.9367 INCHES MINIMUM AND 3.9370 INCHES MAXIMUM IN |
| Bore Shape | STRAIGHT |
| Standard Tolerance Designation | RBEC NO.5 |
| Bore Diameter | 2.5588 INCHES MINIMUM AND 2.5591 INCHES MAXIMUM IN |
| Material | STEEL COMP 4340 RETAINER |
| Material | STEEL OUTER RING |
| Material | STEEL INNER RING |
| Material | STEEL ROLLER |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 538623 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
NSN 3110-00-075-2227 is a Bearing,roller,cylindrical, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-075-2227 has 1 manufacturer part number on file: 538623 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 538623: Internal Clearance: 0.0028 INCHES MINIMUM RADIAL AND 0.0038 INCHES MAXIMUM RADIAL IN; Locating Feature: NONLOCATING; Surface Finish: GROUND; Style Designator: SINGLE ROW, ONE-DIRECTION LOCATING, ONE LIP INNER RING, TWO LIP OUTER RING, ROLLER RETAINMENT RING ON INNER RING, NON-SEPARABLE. 15 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.