- Specifically designed for use as write-once media in ISO Standard 5.25" multi-function drives, data cannot be altered without detection<br>- Certified to withstand over 100,000 insertions in optical disk libraries/jukeboxes, and archival life exceeds 40 years<br>- Unique features like the slip ring and plastic centered hub add unparalleled reliability, especially in jukebox environments<br>- Special protective coating to safeguard information for a lifetime of service. <br>- Proprietary anti-static coating that helps reduce electrostatic charges that can cause problems in jukebox/library mechanisms This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-156-1426, indicating validated use in U.S. government and defense logistics supply chains.
| material | ALUMINUM OR COPPER ALLOY OR STEEL RETAINER |
| bore_shape | STRAIGHT |
| bore_diameter | 55.0 MILLIMETERS NOMINAL MM |
| overall_width | 43.0 MILLIMETERS NOMINAL MM |
| surface_finish | GROUND |
| special_features | OIL HOLES AND GROOVE IN OUTER RING |
| style_designator | DOUBLE ROW, SPHERICAL ROLLERS, SELF-CONTAINED, OUTER AND INNER RACEWAYS CONCAVE, NON-SEPARABLE |
| overall_outside_diameter | 120.0 MILLIMETERS NOMINAL MM |
| internal_fit-up_designation | STANDARD |
| standard_tolerance_designation | RBEC NO.1 |
| material_document_and_classification | 66 FED STD ALL MATERIAL RESPONSES OUTER RING |
| NSN | 3110-00-156-1426 |
| INTERNAL FIT-UP DESIGNATION | STANDARD |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD ALL MATERIAL RESPONSES ROLLER |
| MATERIAL | STEEL COMP E51100 OR STEEL COMP E52100 ROLLER |
| MATERIAL | STEEL COMP E51100 OR STEEL COMP E52100 INNER RING |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD ALL MATERIAL RESPONSES INNER RING |
| STYLE DESIGNATOR | DOUBLE ROW, SPHERICAL ROLLERS, SELF-CONTAINED, OUTER AND INNER RACEWAYS CONCAVE, NON-SEPARABLE |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD ALL MATERIAL RESPONSES OUTER RING |
| MATERIAL | STEEL COMP E51100 OR STEEL COMP E52100 OUTER RING |
| MATERIAL | ALUMINUM OR COPPER ALLOY OR STEEL RETAINER |
| STANDARD TOLERANCE DESIGNATION | RBEC NO.1 |