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The CS Mini 3 is one of the smallest and lightest precision harmonic drives currently available on the market. It is specifically designed for low-torque (0.1–0.6 N·m range), ultra-high precision applications.
Its core value proposition is:
Achieving zero-backlash precision transmission within a space the size of a coin.
Typical applications for this space-sensitive, high-end equipment include: Micro robot joints Endoscope manipulation mechanisms 5-axis machine tool auxiliary axes Precision optical adjustment stages
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Dimension Drawing

CS mini 2.5 Harmonic Reducer Parameter Table
| Parameter |
Unit |
Reduction Ratio 30 |
Reduction Ratio 50 |
| Rated Torque at 2000 r/min |
N·m |
0.06 |
0.11 |
| Allowable Peak Torque (Start-Stop) |
N·m |
0.13 |
0.21 |
| Maximum Allowable Average Load Torque |
N·m |
0.1 |
0.13 |
| Maximum Instantaneous Allowable Torque |
N·m |
0.22 |
0.41 |
| Maximum Allowable Input Speed |
rpm |
10000 |
10000 |
| Allowable Average Speed |
rpm |
6500 |
6500 |
| Moment of Inertia |
×10⁻⁴ kg·m² |
(not specified) |
(not specified) |
| Backlash |
Arcsec |
≤20 |
≤20 |