1. Introduction
This manual provides essential information for the safe and effective installation, operation, and maintenance of your HGR25 Linear Rail and HGH25CA/HGW25CC Carriage Set. These components are designed for high-precision linear motion applications, commonly used in CNC machinery, automation equipment, and other industrial systems. Please read this manual thoroughly before proceeding with any installation or operation.
Note: The linear rails and carriages provided are not original branded 'Hiwin' products but are compatible components. Lengths can be customized; please contact the seller for specific requirements.
Figure 1: Overview of HGR25 linear rails with HGH25CA and HGW25CC carriages.
2. Safety Information
Always observe the following safety precautions to prevent injury and damage to the equipment:
- Wear appropriate personal protective equipment (PPE) such as safety glasses and gloves during installation and maintenance.
- Ensure all power to machinery is disconnected before installing or performing maintenance on linear motion components.
- Handle linear rails and carriages with care. They can be heavy and have sharp edges.
- Avoid dropping or impacting the components, as this can damage precision surfaces and affect performance.
- Do not attempt to disassemble the carriage blocks unless specifically instructed, as this can lead to loss of ball bearings and damage.
- Ensure proper mounting and alignment to prevent binding or excessive wear during operation.
3. Package Contents
Your package should contain the following items:
- 2 pcs HGR25 Linear Rail (with anti-dust caps for linear rail)
- 4 pcs HGR25 Block Carriage (either HGH25CA or HGW25CC type, depending on your selection)
- Necessary mounting hardware (e.g., screws)
Figure 2: Typical package contents for the HGR25 linear rail and carriage set.
4. Specifications
The HGR25 linear rail system features a 25mm guide width and is constructed from high-quality bearing steel for durability and high loading capacity. Available lengths range from 250mm to 2900mm.
4.1 General Specifications
- Model Number: HGR25/HGH25CA/HGW25CC
- Guide Width or Diameter: 25MM
- Material: Bearing Steel
- Structure: High Loading
- Origin: Mainland China
- Length Customization: Yes
4.2 Carriage Types: HGH vs HGW
The HGR25 system supports two main types of carriage blocks: HGH (flange type) and HGW (square type). The choice depends on your application's mounting requirements.
Figure 3: Visual comparison of HGH (top) and HGW (bottom) carriage types.
4.3 Detailed Dimensions and Load Ratings
Refer to the following diagrams and tables for detailed dimensions and load ratings for both HGW and HGH series linear guide blocks.
Figure 4: HGW Series Linear Guide Block Specifications.
Figure 5: HGH Series Linear Guide Block Specifications.
5. Setup and Installation
Proper installation is crucial for optimal performance and longevity of your linear rail system.
5.1 Preparation
- Ensure the mounting surface is clean, flat, and free from burrs or debris.
- Verify that the mounting holes on your machine match the dimensions of the linear rail.
- Clean the linear rails and carriage blocks with a lint-free cloth and a suitable solvent (e.g., isopropyl alcohol) to remove any protective coatings or contaminants.
5.2 Carriage Installation/Removal
To prevent ball bearings from falling out, always use the provided plastic guide or a spare rail segment when installing or removing carriage blocks from the linear rail.
Figure 6: Correct procedure for installing/removing carriage blocks.
- **Removal (Top Image):** Do NOT slide the carriage off the rail without a guide. This will cause ball bearings to fall out.
- **Installation/Removal (Middle Image - Step 1):** Align the plastic guide (or a spare rail) with the end of the linear rail. Carefully slide the carriage from the rail onto the guide, or from the guide onto the rail.
- **Installation/Removal (Bottom Image - Step 2):** Ensure a smooth transition between the rail and the guide. The carriage should slide freely.
5.3 Rail Mounting
- Position the linear rail on the mounting surface, aligning the mounting holes.
- Insert the mounting screws and tighten them gradually and evenly along the entire length of the rail. Avoid over-tightening any single screw before others are snug.
- For dual rail systems, ensure both rails are parallel and coplanar to prevent binding and ensure smooth motion. Use precision alignment tools if necessary.
6. Operation
Once installed, the linear rail and carriage system provides precise and low-friction linear motion. Ensure that the load applied to the carriages does not exceed the specified dynamic or static load ratings (refer to Section 4.3). Operate the system within its intended speed and acceleration limits to maximize lifespan and maintain accuracy.
7. Maintenance
Regular maintenance helps preserve the performance and extend the life of your linear rail system.
- **Lubrication:** Apply a suitable lubricant (e.g., lithium-based grease or machine oil) to the rail and carriage blocks periodically. The frequency depends on the operating environment and usage intensity. Ensure lubricant reaches the ball bearing raceways.
- **Cleaning:** Keep the rails and carriages free from dust, chips, and other contaminants. Use a clean, lint-free cloth to wipe down exposed surfaces. Anti-dust caps are provided to help protect the internal components.
- **Inspection:** Regularly inspect the rails and carriages for signs of wear, damage, or corrosion. Check for smooth movement and any unusual noises. Address any issues promptly.
- **Tightness Check:** Periodically check the tightness of all mounting screws to ensure the rails remain securely fastened.
8. Troubleshooting
Here are some common issues and their potential solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Binding or Sticking Motion |
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| Excessive Noise |
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| Reduced Accuracy |
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9. User Tips
- When ordering, carefully select the correct length and carriage type (HGH or HGW) to match your project requirements.
- Consider purchasing extra anti-dust caps if your operating environment is particularly dusty or prone to debris.
- For very long rails, ensure adequate support along the entire length to prevent deflection and maintain precision.
- If you are new to linear motion systems, watch online tutorials on proper installation and alignment techniques for HGR series rails.
10. Warranty and Support
The seller attaches great importance to after-sales support. If you encounter any questions or issues with your HGR25 Linear Rail and Carriage Set, please contact the seller directly through the platform where you made your purchase. Provide details of your issue, and a professional team will assist you.
Your satisfaction is important, and positive feedback is greatly appreciated if you are satisfied with the product and service.
