1. Introduction
Thank you for purchasing the HiKOKI 36V Cordless Hand Grinder GP36DA(NN). This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your tool. Please read this manual thoroughly before use and keep it for future reference. Proper understanding and adherence to these instructions will ensure optimal performance and extend the life of your hand grinder.
2. Safety Information
Always observe basic safety precautions to reduce the risk of fire, electric shock, and personal injury. Keep this manual accessible for all users.
General Power Tool Safety Warnings:
- Work Area Safety: Keep the work area clean and well-lit. Cluttered or dark areas invite accidents. Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust.
- Electrical Safety: Avoid body contact with earthed or grounded surfaces. Do not expose power tools to rain or wet conditions.
- Personal Safety: Always wear eye protection. Use hearing protection when operating the tool for extended periods. Dress properly; avoid loose clothing or jewelry. Secure long hair.
- Tool Use and Care: Do not force the power tool. Use the correct power tool for your application. Disconnect the battery pack from the power tool before making any adjustments, changing accessories, or storing power tools.
Specific Grinder Safety Warnings:
- Always use accessories that are rated for the maximum speed of the grinder.
- Ensure the workpiece is securely clamped or held.
- Maintain a firm grip on the tool with both hands during operation.
- Be aware of sparks and flying debris. Keep bystanders away from the work area.
- The GP36DA(NN) includes safety features such as soft start, brake, kickback reduction, and restart prevention. Familiarize yourself with these functions.
3. Product Features
The HiKOKI GP36DA(NN) Cordless Hand Grinder is designed for various grinding and finishing tasks, offering portability and performance.
- 36V MultiVolt System: Utilizes a 36V MultiVolt battery for high power output.
- Brushless Motor: Provides efficient power delivery and extended tool life.
- Slide Switch: Designed for continuous operation.
- Dial-Type Stepless Speed Control: Adjusts rotation speed from 7,000 to 29,000 RPM.
- Two Operating Modes:
- Variable Speed Mode: Maintains a constant rotation speed based on the dial setting.
- Auto Mode: Automatically adjusts rotation speed according to the load, reducing noise during no-load operation.
- Safety Functions: Equipped with soft start, electric brake, kickback reduction, and restart prevention for enhanced user safety.
- Shaft Diameter: 6mm collet chuck.
- Maximum Usable Tip Tool Diameter: 25mm.
Image: Overview of the HiKOKI MultiVolt Cordless Hand Grinder GP36DA, highlighting its 36V power, speed adjustment, slide switch, and auto mode for reduced noise.
Image: Chart comparing the grinding performance (approx. 1.6g/min) of the cordless GP36DA with an AC model GP3V (approx. 1.5g/min), demonstrating comparable power.
4. Setup
4.1. Battery Installation and Removal
- Installation: Align the battery pack with the battery port on the tool. Slide the battery into place until it clicks securely.
- Removal: Press the battery release button (if present) and slide the battery pack out of the tool.
4.2. Attaching and Changing Accessories
The GP36DA(NN) comes with a 6mm collet chuck pre-installed. Use the provided spanners for accessory changes.
- Ensure the tool is switched off and the battery is removed.
- Insert the appropriate grinding bit or accessory into the collet chuck. Ensure the shank is fully inserted.
- Use the two spanners (12mm and 17mm) to tighten the collet nut securely. One spanner holds the spindle, and the other tightens the nut.
- To remove an accessory, reverse the tightening procedure.
5. Operating Instructions
5.1. Powering On and Off
The GP36DA(NN) features a slide switch for continuous operation.
- To Turn On: Slide the switch forward to the 'ON' position. The tool will start with a soft start function.
- To Turn Off: Slide the switch backward to the 'OFF' position. The electric brake will engage to stop the accessory quickly.
5.2. Speed Adjustment and Mode Selection
The tool offers a dial for stepless speed adjustment and two operating modes.
Image: Close-up of the speed adjustment dial (numbered 1-5 and 'A' for Auto mode) and a table detailing RPMs for various applications.
- Variable Speed Mode (Dial Settings 1-5): Rotate the dial to select the desired speed. The tool will maintain this speed during operation.
- Auto Mode (Dial Setting A): Select 'A' on the dial. In this mode, the tool automatically adjusts its rotation speed based on the workload. It operates at a lower speed (approx. 15,000 RPM) when idle to reduce noise and increases to full speed (approx. 29,000 RPM) under load.
Recommended Speed Settings:
| Mode | Dial Setting | Rotation Speed (min⁻¹) | Application |
|---|---|---|---|
| Variable Speed | 1 | 7,000 | Polishing, Finishing |
| 2 | 13,800 | Paint Removal | |
| 3 | 16,600 | Rust Removal | |
| 4 | 24,400 | Deburring | |
| 5 | 29,000 | Grinding | |
| Auto Mode | A | 15,000 (No-load) | General use, noise reduction at no-load |
| 29,000 (Under load) |
5.3. General Operation Tips
- Always hold the grinder firmly with both hands.
- Apply steady, even pressure. Avoid excessive force, which can damage the tool or workpiece.
- Allow the tool to reach full speed before contacting the workpiece.
- Move the tool smoothly across the surface for an even finish.
Image: A user wearing gloves operates the HiKOKI cordless hand grinder on a metal pipe, generating sparks, demonstrating typical use.
6. Maintenance
Regular maintenance ensures the longevity and safe operation of your hand grinder.
- Cleaning: After each use, clean the tool body and ventilation openings with a soft, dry cloth. Do not use solvents or abrasive cleaners.
- Accessory Inspection: Regularly inspect grinding bits and other accessories for wear, damage, or cracks. Replace worn or damaged accessories immediately.
- Battery Care: Store batteries in a cool, dry place. Do not expose them to extreme temperatures. Charge batteries using only the specified HiKOKI charger (UC 18YDL2).
- Storage: Store the tool and accessories in a dry, secure location, out of reach of children.
7. Troubleshooting
If you encounter issues with your GP36DA(NN), refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not start | Battery not installed correctly Battery discharged Restart prevention function activated | Reinstall battery securely Charge battery Turn the switch OFF then ON again |
| Reduced power or speed | Battery low Accessory worn or dull Overload protection activated | Charge battery Replace accessory Reduce pressure, allow tool to cool |
| Excessive vibration | Accessory not properly secured Damaged or unbalanced accessory | Tighten collet nut Replace accessory |
If the problem persists after attempting these solutions, please contact an authorized HiKOKI service center.
8. Specifications
Detailed technical specifications for the HiKOKI 36V Cordless Hand Grinder GP36DA(NN).
Image: A table showing the detailed specifications of the GP36DA(NN) hand grinder, including dimensions, weight, and battery information.
| Specification | Value |
|---|---|
| Model | GP36DA |
| Max Collet Chuck Diameter | 6 mm |
| Max Usable Tip Tool Diameter | 25 mm |
| Motor | DC Brushless Motor |
| No-load Rotation Speed | 7,000 - 29,000 min⁻¹ (RPM) |
| Machine Dimensions (L x H x W) | 468 x 121 x 86 mm (with BSL 36A18 battery) |
| Mass (Weight) | 2.5 kg (with BSL 36A18 battery) |
| Compatible Battery | MultiVolt Battery (with remaining charge display) BSL 36A18 |
| Charger | UC 18YDL2 (with cooling function) |
| Charging Time (Practical / Full) | Approx. 19 min / 25 min |
| Standard Accessories | Collet chuck (6mm) (attached to main unit), Spanners (12mm, 17mm) each 1 pc. |
9. Warranty and Support
HiKOKI products are manufactured to high-quality standards and are backed by a manufacturer's warranty. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official HiKOKI website.
For technical support, service, or to purchase replacement parts and accessories, please contact your authorized HiKOKI dealer or service center. You can find contact information on the official HiKOKI website or through your product retailer.
