1. Introduction and Overview
This manual provides essential information for the safe and effective operation of your Bosch UniversalImpactDrive 18V-350 Cordless Impact Wrench. Please read these instructions carefully before using the tool for the first time and keep them for future reference.
The Bosch UniversalImpactDrive 18V-350 is a cordless impact wrench designed for demanding fastening and tightening tasks. It delivers a maximum torque of 350 Nm and an impact rate of 3,400 impacts per minute, making it suitable for tasks such as changing wheels, loosening stubborn nuts, removing rusted bolts, and driving large screws into wood. Featuring a 1/2" male square tool holder, it accommodates various compatible accessories. The brushless motor ensures high power output and extended tool life. Its compact design facilitates transport and overhead work. Integrated Bosch Syneon electronics protect both the tool and the battery. This tool is part of the POWER FOR ALL 18V system, allowing a single battery to power all compatible POWER FOR ALL 18V tools.
Figure 1: Bosch UniversalImpactDrive 18V-350 with packaging and included hex adapter.
2. Safety Instructions
Always observe the following safety precautions to prevent electric shock, injury, or fire:
- 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: Power tool plugs must match the outlet. Never modify the plug in any way. Do not abuse the cord. Keep cord away from heat, oil, sharp edges, or moving parts.
- Personal Safety: Always wear eye protection. Use hearing protection when operating impact tools. Wear a dust mask if operations create dust. Dress properly; avoid loose clothing or jewelry.
- Power Tool Use and Care: Do not force the power tool. Use the correct power tool for your application. Disconnect the plug from the power source and/or remove the battery pack before making any adjustments, changing accessories, or storing power tools.
- Battery Tool Use and Care: Recharge only with the charger specified by the manufacturer. Use power tools only with specifically designated battery packs.
3. Product Components and What's Included
The Bosch UniversalImpactDrive 18V-350 package typically includes:
- Bosch UniversalImpactDrive 18V-350 Cordless Impact Wrench (bare tool)
- 1 Hex Adapter
Note: Batteries and chargers are sold separately as this is a bare tool. The tool is compatible with all Bosch POWER FOR ALL 18V batteries.
Figure 2: The Bosch POWER FOR ALL 18V Alliance illustrates battery compatibility across a wide range of tools.
4. Setup
4.1 Attaching the Battery Pack
- Ensure the battery is fully charged using a compatible Bosch 18V charger.
- Align the battery pack with the base of the tool.
- Slide the battery into the tool until it clicks securely into place.
- To remove, press the battery release button and slide the battery out.
4.2 Installing Accessories (Sockets/Bits)
The UniversalImpactDrive 18V-350 features a 1/2" male square tool holder.
- Ensure the tool is switched off and the battery is removed before installing or removing accessories.
- Push the desired 1/2" square drive socket or the included hex adapter onto the square drive spindle until it locks securely.
- To remove, pull the socket/adapter firmly off the spindle.
Figure 3: Key features of the impact wrench, including the 1/2" square tool holder for secure socket retention.
5. Operating Instructions
5.1 Powering On/Off and Speed Control
- To switch on the tool, press the On/Off switch. The LED work light will illuminate.
- To switch off, release the On/Off switch.
- The tool features variable speed control. The speed can be continuously adjusted by how far the On/Off switch is pressed. Light pressure results in lower speed, while full pressure results in maximum speed.
5.2 Direction of Rotation
The direction of rotation is controlled by the forward/reverse switch. Push the switch to the left for forward rotation (tightening) and to the right for reverse rotation (loosening).
5.3 Torque and Speed Settings
The UniversalImpactDrive 18V-350 offers 3 speed/torque settings for various applications:
- Setting 1 (Low Speed/Torque): Ideal for delicate tasks or when precise control is needed, such as driving smaller screws or initial tightening. Recommended for wheel bolt tightening.
- Setting 2 (Medium Speed/Torque): Suitable for general fastening applications.
- Setting 3 (High Speed/Torque): For demanding tasks requiring maximum power, such as loosening stubborn nuts or driving large screws.
Use the mode selector button on the tool to cycle through these settings.
Figure 4: The impact wrench in use, demonstrating its powerful and versatile application.
Figure 5: Compact design allows for easy handling and use in various positions, including overhead.
Figure 6: The brushless motor provides high endurance for demanding tasks.
Figure 7: High torque and precise control make it ideal for automotive tasks like changing wheels.
6. Maintenance
6.1 Cleaning
- Keep the ventilation slots of the tool clean to prevent overheating.
- Regularly clean the tool housing with a soft, damp cloth. Do not use solvents or abrasive cleaners.
- Remove any dust or debris from the tool holder.
6.2 Storage
- Store the tool and battery in a dry, cool place, away from direct sunlight and moisture.
- Ensure the battery is partially charged (around 50%) before long-term storage.
- Keep out of reach of children.
6.3 Battery Care
- Do not expose batteries to extreme temperatures or fire.
- Avoid short-circuiting the battery terminals.
- Only use original Bosch chargers for charging.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not start | Battery not inserted correctly or discharged. | Ensure battery is fully inserted. Charge battery if necessary. |
| Reduced power/torque | Battery low or incorrect speed/torque setting. | Charge battery. Select a higher speed/torque setting. |
| Tool overheats | Blocked ventilation slots or prolonged heavy use. | Clean ventilation slots. Allow tool to cool down. Reduce load. |
| Accessory not holding securely | Incorrect accessory size or worn tool holder. | Ensure 1/2" square drive accessories are used. If issue persists, contact service. |
8. Specifications
| Feature | Specification |
|---|---|
| Manufacturer | Bosch |
| Model Number | 0603980304 |
| Product Dimensions (L x W x H) | 24.2 x 16 x 8.5 cm |
| Weight | 1.07 kg |
| Color | Green |
| Material | Metal |
| Power Source | Battery Powered |
| Voltage | 18 Volts |
| Max Torque | 350 Nm |
| Max Rotational Speed | 3400 rpm |
| Amperage | 4 A |
| Tool Holder | 1/2" Male Square |
| Special Features | Brushless motor, variable speed, adjustable torque |
| Batteries Included | No |
| Batteries Required | Yes (Bosch POWER FOR ALL 18V) |
| Country of Origin | China |
Figure 8: Technical highlights including Syneon technology, POWER FOR ALL 18V Alliance, and brushless motor.
9. Warranty and Support
Bosch power tools are manufactured to the highest quality standards. For information regarding warranty terms and conditions, please refer to the warranty card included with your product or visit the official Bosch website for your region. For technical support, spare parts, or service, please contact your local authorized Bosch service center.
Figure 9: The POWER FOR ALL 18V Alliance offers extensive compatibility across multiple brands and tools.
