From the industry’s smallest 20mm square frame to the powerful 86mm square frame, a wide variety of sizes are available to suit any application.
20mm Square Series

| Rated Current (A/Phase) | Model | Holding Torque (N·m / kgf·cm) | Coil Resistance (Ω/Phase) | Moment of Inertia (10⁻⁷ kg·m²) | Motor Length L (mm) | Weight (g) | |
| Single Shaft | Double Shaft | ||||||
| 0.35A | 01K‑S513 | 01K‑S513‑W | 0.013 (0.13) | 6.1 | 1.9 | 30 | 50 |
| 0.35A | 02K‑S515 | 02K‑S515‑W | 0.024 (0.24) | 11.4 | 4 | 46.5 | 85 |
| 24mm Square Series | |||||||
| 0.75A | 02K‑S523 | 02K‑S523‑W | 0.017 (0.17) | 1.1 | 4.2 | 30.5 | 70 |
| 0.75A | 04K‑S525 | 04K‑S525‑W | 0.028 (0.28) | 1.7 | 8.3 | 46.5 | 120 |
| 42mm Square Series | |||||||
| 0.75A | 1K‑S543 | 1K‑S543‑W | 0.13 (1.3) | 1.7 | 35 | 33 | 200 |
| 0.75A | 2K‑S544 | 2K‑S544‑W | 0.18 (1.8) | 2.2 | 54 | 39 | 240 |
| 0.75A | 3K‑S545 | 3K‑S545‑W | 0.24 (2.4) | 2.2 | 68 | 47 | 310 |
| 60mm Square Series | |||||||
| 0.75A | 4K‑S564 | 4K‑S564‑W | 0.45 (4.5) | 2.6 | 175 | 48.5 | 500 |
| 1.4A | 4K‑M564 | 4K‑M564‑W | 0.45 (4.5) | 0.8 | 175 | 48.5 | 500 |
| 0.75A | 8K‑S566 | 8K‑S566‑W | 0.8 (8.0) | 3.4 | 220 | 56.5 | 700 |
| 1.4A | 8K‑M566 | 8K‑M566‑W | 0.8 (8.0) | 1.1 | 220 | 56.5 | 700 |