The Bearing,roller,cylindrical, cataloged under National Stock Number 3110-00-702-4755, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Regal Beloit America, Inc. Dba Rollway Bearing. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3110-00-702-4755 |
| Primary Part Number | SB2101-1 |
| Item Name | Bearing,roller,cylindrical |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Regal Beloit America, Inc. Dba Rollway Bearing |
| Status | ACTIVE |
| Retainer Fabrication Method | MACHINED |
| Internal Clearance | 0.0039 INCHES MINIMUM RADIAL AND 0.0049 INCHES MAXIMUM RADIAL IN |
| Locating Feature | NONLOCATING |
| Surface Finish | GROUND |
| Style Designator | SINGLE ROW, NON-LOCATING, TWO LIP INNER RING, CYLINDRICAL OUTER RING, SEPARABLE |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE ROLLER |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OUTER RING |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE INNER RING |
| Overall Outside Diameter | 80.0000 INCHES NOMINAL IN |
| Bore Shape | STRAIGHT |
| Test Data Document | 52676-470319 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Standard Tolerance Designation | RBEC NO.5 |
| Bore Diameter | 50.0 MILLIMETERS NOMINAL MM |
| Material | COPPER ALLOY RETAINER |
| Material | STEEL COMP E52100 ROLLER |
| Material | STEEL COMP E52100 OUTER RING |
| Material | STEEL COMP E52100 INNER RING |
| 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 |
|---|---|
| SB2101-1 PRIMARY | Regal Beloit America, Inc. Dba Rollway Bearing (USA) |
| SB2101-1 PRIMARY | Skf Usa Inc. (USA) |
| SB2101-1 PRIMARY | Skf Usa Inc. (USA) |
| SB2101-1 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| Reference | Meaning |
|---|---|
| MCS110-101 | 5/1 Secondary reference Regal Beloit America, Inc. Dba Rollway Bearing |
| R110KC400 | 5/1 Secondary reference Skf Usa Inc. |
| 451819 | 5/1 Secondary reference Skf Usa Inc. |
NSN 3110-00-702-4755 is a Bearing,roller,cylindrical, manufactured by Regal Beloit America, Inc. Dba Rollway Bearing, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-702-4755 has 4 manufacturer part numbers on file: SB2101-1 (Regal Beloit America, Inc. Dba Rollway Bearing), SB2101-1 (Skf Usa Inc.), SB2101-1 (Skf Usa Inc.), SB2101-1 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for SB2101-1: Retainer Fabrication Method: MACHINED; Internal Clearance: 0.0039 INCHES MINIMUM RADIAL AND 0.0049 INCHES MAXIMUM RADIAL IN; Locating Feature: NONLOCATING; Surface Finish: GROUND. 17 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.