Overview of RHSD Series Harmonic Reducers

The document provides detailed technical specifications and characteristics of the RHSD series harmonic reducers, including RHSD-I and RHSD-III models. These reducers are designed for applications requiring compact size, light weight, and high precision, suitable for tight-space installations.

1. Product Series Description

• RHSD-I Series: Ultra-thin hollow structure, small size, and light weight, ideal for tight-space applications.
• RHSD-III Series: Also ultra-thin hollow structure with the wave generator center as a shaft hole, suitable for threading and tight-space requirements.

2. Mechanical Specifications

• Starting Torque: Provided for both RHSD-I and RHSD-III series, measured in cN·m, indicating the torque required to initiate movement.
• Stiffness: Specified as ×10 N·m/rad, indicating resistance to angular deformation.
• Rated Torque and Allowable Torque: Rated torque at 2000 rpm and allowable peak torque at start/stop are detailed for various models and gear ratios.
• Backlash and Transmission Accuracy: Backlash values are given in arc seconds, with transmission accuracy also specified in arc seconds, reflecting the precision of motion transmission.
• Noise Levels: Noise emissions are measured in decibels (dB), important for applications sensitive to sound.
• Maximum Input Speed and Allowable Average Input Speed: Limits on rotational speeds to ensure safe and reliable operation.
• Buckling and Ratcheting Torque: Mechanical limits for structural integrity and operational safety.

3. Dimensional Data and Mounting

• Dimension tables for RHSD-I and RHSD-III series include critical parameters such as diameters (φC, φG), lengths (L3, L4), and mounting hole sizes (e.g., M3, M4, M5).
• Outline drawings accompany the dimension tables to assist in installation and integration.
• Wave generator dimensions are specified for certain models (e.g., 14 and 17).

4. Performance Parameters

• Hysteresis Loss: Measured in arc minutes, indicating energy loss due to internal friction during operation.
• Torque Ratios: Various gear ratios are listed (e.g., 14, 17, 20, 25, 32, 40), with corresponding performance metrics.
• Torque Capacity: Data on allowable average torque, peak torque, and momentary torque provide guidance on operational limits.

5. Application Recommendations and Limitations

• RHSD-I and RHSD-III series are recommended for applications requiring compactness and high precision in limited spaces.
• Speed and torque limits must be observed to prevent mechanical failure.
• Backlash and noise levels should be considered in precision and noise-sensitive environments.

6. Summary of Key Parameters

Note: The above table summarizes typical values; detailed specifications vary by exact model and ratio.

7. Mechanical Limits and Safety

• Buckling torque and ratcheting torque values are provided to ensure mechanical safety under load.
• Starting torque values indicate the minimum torque required to overcome static friction.

8. Additional Notes

• Dimensions φC, φG, L3, and L4 are limited and critical for design integration.
• Mounting hole sizes (M3, M4, M5) vary by model and must be matched correctly.

This summary consolidates the key technical data and recommendations for the RHSD series harmonic reducers, facilitating selection and application in precision mechanical systems.