PRECISION DRIVE
ST25 Harmonic Reducer
Review the ANDANTEX ST25 Harmonic Reducer: product specifications, available engineering resources and selection information for your application.
ST25 Harmonic Reducer
Review the ANDANTEX ST25 Harmonic Reducer: product specifications, available engineering resources and selection information for your application.
Key Technical Specifications
| Item | Parameters | Description |
|---|---|---|
| Product Series | ST Harmonic Reducer | Harmonic Reducer |
| Specifications / Frame Size | 25 | Model Specifications |
| Gear Ratio | 50 / 80 / 100 / 120 | Torque Varies by Ratio, See the Original 2D Specification Table |
| Rated Output Torque | 39–67 Nm | Gear Ratio: 50=39, 80=63, 100/120=67 Nm; Drawing Conditions: Input 2000 r/min |
| Maximum Torque | 186–304 Nm | Drawing Annotation " Maximum Momentary Allowable Torque ", Not a Continuous Operating Rating |
| Backlash | ≤20 arcsec | The Original Unit Is Arcseconds, Do Not Confuse with Arcminutes Used for Planetary Gearboxes |
| Maximum Input Speed | 5600 rpm | Maximum Allowable Input Speed Specified in the Drawing ( Grease Lubrication) |
| Allowable Average Input Speed | 3500 rpm | This Is the Allowable Average Input Speed ( Grease Lubrication), Not the Rated Output Speed |
| Weight | 1.22 kg | Component Weight Listed in the Drawing; Check Other Combinations against the Actual Configuration |
| Service Life | 10000–15000 h | 50 Ratio Is 10000 h, Other Ratios Are 15000 h( If Listed in the Drawing); Based on the Original 2D Table Applicability |
Unlisted Specifications Are Pending, Confirm for the Specific Configuration.
Specifications / Gear Ratio
50 / 80 / 100 / 120
Torque Varies by Ratio, See the Original 2D Specification Table
Gear Ratio, Confirm Stages & Interface Using the Required Configuration and Official Drawing.
ST25 Mounting Interface Verification
For Harmonic Reducers, Verify the Wave Generator-to-Motor Connection, Output Hole Locations & Housing Pilot Dimensions.
First Check This Model’s Published 2D Resources; For Other Structures or Connection Options, Search the Website Interface Library by Dimensions.
ST25 2D / 3D Engineering Resources
Each Standard Size, Motor Interface & Custom Combination Is Managed Separately 2D Drawing and 3D STEP; 2D Supports Images and PDF.
Check the Model before Downloading, Size & Interface
Use the Current Order Model & Official Engineering Drawing; Custom Input, Outputs & Flanges Require Their Own Resources.
Selection FAQ
ST25 Can I Order by Model Number Alone?
First confirm the gear ratio, Load, Output Speed, Mounting orientation and motor interface. The same frame size may have different interfaces and configurations.
Drawings and 3D How to Confirm Models?
Find resources on this page or in the Download Center, Confirm the final version against the motor interface and machine mounting dimensions.
What If My Specifications Are Incomplete?
Provide the Motor Model, Load, Target Speed, Required Torque, Cycle Time & Installation Space, Our engineers can help confirm the requirements.
Need a Quote or Engineering Review?
Submit ST25 Gear Ratio for, Load & Installation Requirements.