Product Description
SHD-08 Mini Harmonic Drive Reducer
The SHD-08 Mini Harmonic Drive Reducer is a compact strain wave gearbox designed for robotics and precision motion control applications. With an outer diameter of 40mm and a thickness of only 11.5mm, this mini harmonic reducer provides high torque density in a very small form factor.
Harmonic drive technology uses elastic deformation to achieve high reduction ratios, low backlash, and high positioning accuracy, making it ideal for robot joints and automation equipment requiring precise motion control.
The SHD-08 offers stable performance, compact size, and reliable transmission for robotic systems and advanced mechatronic designs.
Key Features
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Mini harmonic drive reducer
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40mm compact diameter
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Ultra-thin design (11.5mm thickness)
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High torque density
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Low backlash transmission
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High precision strain wave mechanism
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Designed for robotics and automation
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Long service life (7000–10000 hours)
Technical Specifications

| Parameter | Value |
|---|---|
| Model | SHD-08 |
| Type | Harmonic Reducer |
| Diameter | Φ40 mm |
| Thickness | 11.5 mm |
| Weight | 0.060 – 0.061 kg |
| Service Life | 7000 – 10000 h |
| Maximum Input Speed | 8500 rpm |
| Average Input Speed Limit | 3500 rpm |
Gear Ratio Performance Data
| Gear Ratio | 30 | 50 | 80 | 100 |
|---|---|---|---|---|
| Rated Torque @ 2000rpm (N·m) | 0.8 | 1.6 | 2.1 | 2.4 |
| Repeated Peak Torque Limit (N·m) | 1.6 | 3.15 | 4 | 4.6 |
| Average Torque Limit (N·m) | 1.3 | 2.1 | 2.9 | 3.2 |
| Momentary Peak Torque Limit (N·m) | 3.2 | 6.1 | 7.5 | 8.7 |
| Backlash | ≤20 arcsec | ≤20 arcsec | ≤10 arcsec | ≤10 arcsec |
Mechanical Characteristics
| Parameter | Value |
|---|---|
| Maximum Input Speed | 8500 rpm |
| Average Input Speed Limit | 3500 rpm |
| Moment of Inertia (1/4GD) | 3.2×10⁻³ / 3.0×10⁻³ kg·cm² |
Applications
The SHD-08 harmonic reducer is suitable for:
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Robot arm joints
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Humanoid robot joints
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Collaborative robots
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Precision positioning systems
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Industrial automation equipment
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Robotics research platforms
FAQ
What is a harmonic drive reducer?
A harmonic drive reducer is a high-precision gearbox that uses strain wave transmission to achieve high reduction ratios, low backlash, and excellent positioning accuracy.
Why use a harmonic drive in robotics?
Harmonic drives are widely used in robotics because they provide high torque, compact size, and precise motion control, which are critical for robot joints.
What is the size of the SHD-08 harmonic drive?
The SHD-08 reducer has a 40mm outer diameter and 11.5mm thickness, making it suitable for compact robotic systems.
What reduction ratios are available?
The SHD-08 series includes reduction ratios such as 30, 50, 80, and 100.
