Inch miniature ball bearings with extended inner ring, shielded, chrome steel
C&H premium inch series instrument and precision miniature ball bearings are designed for compact applications, offering exceptional performance, low friction, and low maintenance. There are perfect for high-speed and precision requirements. Common applications include robotics, medical equipment, electronics, aerospace, automotive, precision instruments, hobby and RC models, and more. Available with 52100 chrome steel or 440C stainless, ABEC-1 to AEBC-9P precision, Z1V1 to Z4V4 noise and vibration, open or shielded.
| d | 3.175 mm | Bore diameter |
| D | 7.938 mm | Outside diameter |
| B/B1 | 4.364 mm | Width |
| C | 4.39 mm | Width outer ring |
| d1 ≈ | 3.571 mm | Shoulder diameter inner ring |
| D1 ≈ | 7.19 mm | Shoulder diameter outer ring |
| r | 0.1 mm | Chamfer |
| 6 pcs | Ball qty | |
| 1.5875 mm | Ball diameter | |
| ≈m | 0.74 g | Weight |
| Cr | 254 N | Basic dynamic load rating |
| C0r | 80 N | Basic static load rating |
| 54000 r/min | Max speed (Grease) | |
| 63000 r/min | Max speed (Oil) | |
| P0(ABEC-1) | Tolerane | |
| P25 | Clearance |
| Shield on both sides | Sealing | |
| None | Locating feature outer ring | |
| Extended | Feature inner ring | |
| 52100 | Ring Material | |
| 52100 | Ball Material | |
| SPCC | Cage Material |
| NMB | ISC/NSK | NTN | BARDEN | MPB | GRW | FAG | ADR |
| RI-518ZZEE | RW2-5ZZ | RAW2-5ZZA | RW2-5SS | 518CEHH | E1/8A-2Z | RE820.2Z | LX1/8ZZ |
