Description
ZLCS Harmonic Drive is a harmonic reducer specifically designed for high-precision transmission and complex motion control applications. With its compact structure and outstanding performance, it plays a critical role in modern automation and intelligent manufacturing systems. As a typical flexible transmission device, the ZLCS Harmonic Drive is widely used in industrial robot joints, semiconductor equipment, precision CNC machines, medical automation systems, aerospace equipment, and other high-end applications, especially in environments requiring extremely high positioning accuracy, repeatability, and space efficiency.
In terms of applications, the ZLCS Harmonic Drive achieves micron-level positioning control through its high reduction ratio and near-zero backlash characteristics, allowing equipment to maintain stable and accurate operation even at high speeds. For example, in robotic joints, the ZLCS Harmonic Drive provides smooth and backlash-free power transmission, significantly improving motion coordination and operational precision. In semiconductor manufacturing equipment, its high repeat positioning accuracy helps ensure machining consistency and production quality. In medical devices, the ZLCS Harmonic Drive supports precise operation and stable output for highly sensitive applications.
Regarding product advantages, the ZLCS Harmonic Drive offers high torque density, compact size, lightweight construction, and high transmission efficiency. Its unique flexspline and circular spline meshing structure enables large reduction ratios while maintaining extremely low backlash, effectively eliminating the cumulative transmission errors commonly found in conventional gear systems. In addition, the ZLCS Harmonic Drive features excellent shock resistance and low vibration characteristics, allowing stable long-term operation under complex working conditions and meeting the strict reliability requirements of advanced industrial equipment.
From a manufacturing perspective, the ZLCS Harmonic Drive is produced using high-strength alloy steel materials. Key components undergo precision CNC machining and multiple heat-treatment processes to ensure gear profile accuracy and superior wear resistance. The flexspline is manufactured using advanced forming technology to guarantee optimal elasticity and fatigue life. During assembly, concentricity and fitting clearance are strictly controlled, while a high-performance lubrication system is applied to minimize friction loss and extend service life. Every ZLCS Harmonic Drive undergoes rigorous accuracy inspection and performance testing before delivery to ensure stable performance in high-precision applications.
Overall, with its high precision, high reliability, and compact design, the ZLCS Harmonic Drive has become an indispensable core transmission component in robotics and precision automation equipment, providing efficient and stable power transmission solutions for modern industries.
ZLCS Harmonic Drive Technical Specifications (Full Version)
1. Basic Specifications
- Product Series: ZLCS Harmonic Drive
- Product Type: Harmonic Drive / Strain Wave Gear
- Model Sizes: 14 / 17 / 20 / 25 / 32
- Structure: Flexspline + Circular Spline + Wave Generator
- Mounting Type: Flange Output / Optional Hollow Shaft
- Reduction Ratios: 50:1 / 80:1 / 100:1 / 120:1
2. Torque & Power Specifications
- Rated Output Torque (@2000 rpm): 5.4 – 137 N·m
- Maximum Start/Stop Torque: 18 – 333 N·m
- Allowable Average Load Torque: 6.9 – 216 N·m
- Instantaneous Peak Torque: 35 – 647 N·m
- Buckling Limit Torque: 190 – 2200 N·m
3. Speed & Motion Performance
- Maximum Input Speed: 4800 – 8500 rpm
- Rated Average Input Speed: Approx. 3500 rpm
- Transmission Efficiency: ≥85% (typical harmonic drive structure)
- Operating Characteristics: Low vibration, smooth output, shock-free operation
4. Accuracy & Transmission Performance
- Backlash: ≤7 – 36 arcsec
- Angular Transmission Accuracy: 2.9 – 4.4 arcmin
- Hysteresis Error: 1 – 2 arcmin
- Repeat Positioning Accuracy: ±5 arcsec (typical value)
- Zero Backlash Characteristic: Near zero-backlash transmission
5. Structural & Dimensional Specifications
- Overall Length: 41 – 62 mm
- Input Side Connection Size (J1): Φ23 – Φ55 mm
- Output Side Connection Size (J2): Φ65 – Φ125 mm
- Mounting Thread Specifications: M4 – M10
- Structural Feature: Compact integrated design
6. Inertia & Dynamic Specifications
- Moment of Inertia: 0.034 – 1.72 ×10⁻⁴ kg·m²
- Starting Torque: 4 – 31 N·m
- Acceleration Torque: 1.6 – 20 N·m
- Dynamic Response: High dynamic response performance
7. Load & Connection Specifications
- Output Side Bolt Tightening Torque: 4.5 – 1108 N·m
- Housing Side Tightening Torque: 4.5 – 1200 N·m
- Load Capacity: Suitable for high-rigidity load applications
- Shock Resistance: Excellent
8. Environmental & Service Life Specifications
- Lubrication Method: Lifetime grease lubrication (maintenance-free)
- Service Life: ≥14,000 hours
- Noise Level: ≤50–60 dB
- Operating Temperature: -20°C to +90°C (typical range)
- Protection Rating: IP40–IP54 (optional)
9. Typical Applications
- Industrial robot joint drives
- CNC rotary axes / 4th axis systems
- Semiconductor manufacturing equipment
- Medical automation devices
- Aerospace precision systems
- High-precision positioning and vision systems






































