Inch miniature ball bearings, 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 | 6.350 mm | Bore diameter |
| D | 19.050 mm | Outside diameter |
| B/B1 | 5.558 mm | Width |
| d1 ≈ | 8.76 mm | Shoulder diameter inner ring |
| D1 ≈ | 15.19 mm | Shoulder diameter outer ring |
| r | 0.4 mm | Chamfer |
| 6 pcs | Ball qty | |
| 3.5712 mm | Ball diameter | |
| ≈m | 7.48 g | Weight |
| Cr | 1059 N | Basic dynamic load rating |
| C0r | 400 N | Basic static load rating |
| 34000 r/min | Max speed (Grease) | |
| 40000 r/min | Max speed (Oil) | |
| P0(ABEC-1) | Tolerane | |
| P25 | Clearance |
| Open | Sealing | |
| None | Locating feature outer ring | |
| None | Feature inner ring | |
| 52100 | Ring Material | |
| 52100 | Ball Material | |
| SPCC | Cage Material |
| NMB | ISC/NSK | NTN | BARDEN | RMB | MPB | SKF | GRW | FAG | ADR | MRC | ND | FAFNIR | RHP |
| RI-1214 | R4AA | R4A | R4AR | EE-2 | BR1/4 | R4A | R4A | R-4A-4 | R-4A | S1K | KLNJ 1/4 |
