1. Introduction
Thank you for choosing the Alloyman Cordless Impact Wrench, Model CJBS-1200. This powerful 20V tool is designed for efficient and reliable fastening and loosening of nuts and bolts, offering up to 900 ft-lbs (1200 N·m) of torque. Featuring a brushless motor, variable speed control, and smart protection features, it is suitable for a wide range of applications from automotive maintenance to construction tasks. Please read this manual thoroughly before operation to ensure safe and optimal use of your new impact wrench.
2. Safety Information
Always follow basic safety precautions when using electric tools to reduce the risk of fire, electric shock, and personal injury.
- Work Area Safety: Keep your 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, hearing protection, and appropriate work gloves. Dress properly; avoid loose clothing or jewelry that can get caught in moving parts. Stay alert and use common sense when operating a power tool.
- 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.
- Battery Tool Use and Care: Recharge only with the charger specified by the manufacturer. Use power tools only with specifically designated battery packs.
3. Package Contents
Your Alloyman Cordless Impact Wrench package includes the following items:
- 1 x Alloyman Cordless Impact Wrench (Model CJBS-1200)
- 2 x 20V 4.0Ah Lithium-Ion Battery Packs
- 1 x Fast Charger
- 4 x Impact Sockets (17mm, 19mm, 21mm, 24mm)
- 1 x Extension Bar
- 1 x Durable Carry Box
4. Product Features
Brushless Motor Technology
The advanced brushless motor delivers up to 900 ft-lbs (1200 N·m) of torque, ensuring powerful performance. This technology allows for up to 50% longer run time, quieter operation, and is spark-free, making it up to 90% more efficient than traditional brushed motors.
Image: Internal view of the Alloyman impact wrench highlighting the brushless motor for high efficiency and long endurance.
High Torque Performance
Experience maximum torque of 900 ft-lbs (1200 N·m) for demanding tasks. The 1/2-inch tungsten steel anvil and alloy hammer are engineered for industrial-grade professional quality, providing over 100,000 cycles of reliable use.
Image: Alloyman impact wrench in action, demonstrating its 900 ft-lbs (1200 N.m) maximum torque on a car wheel.
Smart Protection & Durability
Built-in smart chip technology protects against short-circuit, overheating, over-current, and over-voltage. Active cooling ensures longevity during extended use. The oil-resistant TPE grip and ABS armor provide 1.2m drop protection for jobsite toughness.
3-Gear Variable Speed Control
The variable trigger offers three precision gear settings to match different task requirements:
- 1st Gear: 0–1700 RPM / 400 N·m (for delicate tasks)
- 2nd Gear: 0–2000 RPM / 650 N·m (for standard applications)
- 3rd Gear: 0–2400 RPM / 1200 N·m (for stubborn fasteners)
Image: Close-up of the Alloyman impact wrench's control panel, showing the three variable speed settings and their corresponding torque values.
Dual 4.0Ah Batteries & Fast Charging
Equipped with two 20V 4.0Ah Lithium-Ion battery packs for extended runtime. The included fast charger can fully recharge a battery in 1–2 hours, minimizing downtime. An LED power indicator on the battery ensures perfect battery management.
Image: An exploded diagram of the 20V 4000mAh high-capacity battery, illustrating its internal components and 360-degree cell protection.
Integrated LED Light
A super-bright LED light (50% brighter) illuminates dark workspaces, improving visibility and precision during operation.
Image: The Alloyman impact wrench with its built-in LED light shining on a dark engine bay, highlighting the anti-slip grip.
5. Setup
- Charge the Battery: Insert a 20V 4.0Ah battery pack into the fast charger. Plug the charger into a standard electrical outlet. The indicator lights on the charger will show the charging status. A full charge typically takes 1-2 hours.
- Install Battery: Slide a fully charged battery pack into the base of the impact wrench until it clicks securely into place. Ensure the battery is firmly seated.
- Attach Socket: Select the appropriate impact socket (17mm, 19mm, 21mm, or 24mm) or extension bar for your task. Align the square drive of the socket with the anvil of the impact wrench and push it firmly until it locks.
6. Operating Instructions
- Power On/Off: The tool is activated by pressing the variable speed trigger. Release the trigger to turn off the tool.
- Select Rotation Direction: Use the one-touch forward/reverse switch located near the trigger to select the desired rotation direction. Push the switch to the left for forward (tightening) and to the right for reverse (loosening). The center position acts as a lock to prevent accidental activation.
- Adjust Speed/Torque: The impact wrench features a variable speed trigger and a mode switch to select between three gear settings (1st, 2nd, 3rd) for different torque and RPM levels. Press the mode switch button on the top of the battery housing to cycle through the settings.
- Operation: Place the socket onto the fastener. Press the variable speed trigger to begin operation. The integrated LED light will illuminate the work area. For loosening, the auto-brake in reverse function helps slow the bolt and prevent flying nuts.
Video: A complete overview and feature introduction of a similar high-torque impact wrench, demonstrating its use in various applications.
7. Maintenance
- Cleaning: Keep the tool's ventilation openings clean to prevent overheating. Use a soft, damp cloth to clean the exterior. Do not use harsh chemicals or abrasive cleaners.
- Battery Care: Store batteries in a cool, dry place away from direct sunlight and extreme temperatures. Do not store fully discharged batteries for extended periods.
- Lubrication: The tool's internal components are factory-lubricated and generally do not require additional lubrication.
- Inspection: Regularly inspect the tool for any signs of damage, wear, or loose parts. If any issues are found, discontinue use and contact customer support.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not start | Battery not charged or improperly installed; Lock switch engaged. | Ensure battery is fully charged and correctly inserted. Disengage the lock switch. |
| Reduced power/torque | Low battery charge; Incorrect speed setting; Overheating. | Recharge battery. Select a higher speed/torque setting. Allow tool to cool down. |
| Excessive vibration/noise | Loose components; Damaged anvil or socket. | Check for loose parts and tighten. Replace damaged accessories. If problem persists, contact support. |
| Battery not charging | Charger not plugged in; Faulty battery or charger. | Ensure charger is properly connected. Try a different outlet. Contact support if issue continues. |
9. Specifications
- Brand: Alloyman
- Model Number: CJBS-1200
- Color: Red
- Material: Tungsten Steel Alloy
- Head Style: Square Drive (1/2 inch)
- Item Torque: 900 Foot Pounds (1200 N·m)
- Operation Mode: Battery
- Voltage: 20 Volts
- Max RPM: 2400 RPM
- Battery Capacity: 2x 4.0Ah Lithium-Ion
- Charger: Fast Charger (1-2 hours)
- Included Sockets: 17mm, 19mm, 21mm, 24mm
10. Warranty and Support
The Alloyman Cordless Impact Wrench comes with a warranty of up to 365 days. If you encounter any problems with the product during the after-sales period, there is no need to return it. Please contact our customer support team to receive free parts or new products as applicable. Our dedicated support team is available to assist you with any questions or concerns regarding your product.