JANGKLIFE USB Cordless Rotary Tool Instruction Manual

1. Introduction

Thank you for choosing the JANGKLIFE USB Cordless Rotary Tool. This versatile tool is designed to assist you with a wide range of DIY and crafting tasks, including grinding, polishing, carving, cutting, derusting, and drilling. Powered by a lithium battery, it offers portability and flexible operation, making it an excellent companion for working with metal, glass, wood, and ceramic materials.

Its compact and portable design ensures ease of use and transport, adapting flexibly to various scenarios. With adjustable rotational speeds and a variety of grinding heads, it caters to different material and fineness requirements. The tool operates with low noise, minimizing interference during your work. Both professional craftsmen and amateur enthusiasts will find it easy to get started, benefiting from its wide application range and rich accessory choices for customization.

2. Safety Guidelines

Please read all safety warnings, instructions, and illustrations carefully before using this power tool. Failure to follow all instructions may result in electric shock, fire, and/or serious injury.

2.1 General Safety Precautions

• Always wear appropriate personal protective equipment, including safety goggles, a dust mask, gloves, and a work apron, to protect against flying debris and particles.
• Ensure your work area is clean, well-lit, and free of obstacles to prevent accidents.
• Keep bystanders at a safe distance from the work area. Anyone entering the work area must wear personal protective equipment.
• Do not operate power tools near flammable materials, as sparks could ignite them.
• Check the power tool for proper function before each use. Do not use if there is any damage or malfunction.
• Avoid excessive force or improper operation. Let the tool do the work.
• Do not overload the power tool to prevent damage to the tool and potential hazards.
• Regularly maintain and service the power tool to ensure optimal performance and safety.
• When not in use, store the power tool in a safe place, out of reach of children.

2.2 Accessory Safety

• Only use accessories recommended and specifically designed by the manufacturer.
• The rated speed of the attachment must be at least equal to the maximum speed marked on the power tool. Operating at higher speeds can cause explosion and splashing.
• Ensure the outer diameter and thickness of the attachment are within the rated capacity of the power tool.
• Accessories must have shaft hole dimensions suitable for mounting to the chuck. Improperly fitted accessories can become unstable or vibrate excessively, leading to loss of control.
• Grinding heads, knives, or other accessories must be fully inserted into the collet and securely fastened. If not, the installed grinding head may come loose and eject at high speed.
• Do not use damaged grinding accessories. Inspect accessories before each use for chips, cracks, fragmentation, excessive wear, or loose wires.
• If the power tool or accessories fall, check for damage. After checking, run the tool at its maximum no-load speed for 1 minute, keeping yourself and bystanders away from the rotating attachment. Damaged accessories will usually shatter during this test.

2.3 Battery Safety

• Only use the charger specified by the manufacturer for charging. Using an unsuitable charger may cause a fire hazard.
• When the battery pack is not in use, keep it away from other metal objects (e.g., paper clips, coins, keys, screws) to prevent short-circuiting, which can cause combustion or fire.
• Do not use damaged or modified battery packs or tools. Such battery packs may have unpredictable consequences, leading to fire, explosion, or injury.
• Do not expose the battery pack to fire or temperatures above 130°C (265°F), as this may result in an explosion.

3. Product Overview and Components

Familiarize yourself with the components of your JANGKLIFE Rotary Tool before operation.

3.1 Included Accessories

The tool comes with a variety of accessories to support different tasks. The specific quantity and type may vary based on your purchased package.

4. Specifications

5. Setup

5.1 Charging the Battery

Before using your rotary tool for the first time, ensure the battery is fully charged. Connect the Type-C charging line to the charging port on the tool and plug the other end into a standard 5V 2A USB power adapter (not included) or a compatible USB port (e.g., on a laptop).

An LED light at the tail of the grinder will indicate the charging status. When the battery is fully charged, all LED lights will illuminate, and charging will stop automatically. If the battery is not in use for an extended period, charge it every two months to prevent deep discharge and ensure battery longevity.

5.2 Installing Accessories

The collet is crucial for securely holding accessories during high-speed rotation. Ensure the collet is tightened firmly to prevent unexpected movement or ejection of accessories.

1. Selecting the Collet: The tool supports a clamping range of 0.5-3.2mm. Choose the appropriate inner collet (B) for your accessory's shank diameter.
2. Loosening the Chuck: Hold down the Spindle Press Lock (E) to prevent the spindle from rotating. Use the provided wrench (10) to loosen the Outer Nut (A).
3. Inserting the Accessory: Insert the shank of your desired accessory into the inner collet (B).
4. Tightening the Chuck: While still holding the Spindle Press Lock (E), use the wrench (10) to tighten the Outer Nut (A) until the accessory is firmly clamped. Avoid over-tightening.
5. Removing the Accessory: Reverse the process: hold the Spindle Press Lock (E), loosen the Outer Nut (A) with the wrench, and remove the accessory.

For a visual guide on changing accessories and various applications, please watch the demonstration video:

6. Operation

6.1 Getting Started

Before working on your final project, practice on scrap materials to get a feel for the tool at different speeds and with various accessories. Always wear safety goggles during operation.

• Grip: Hold the tool like a pencil for precision work (using thumb and forefinger). For more efficient operations like grinding a flat surface, a one-handed grip can be used.
• Airflow: Be careful not to block the vents with your hands during operation, as this can cause overheating.
• Approach: Gently lower the accessory onto the workpiece. Do not press hard; instead, focus on guiding the tool with light pressure. This allows the motor to run at a uniform speed for the best grinding effect.
• Layered Work: For most tasks, it's more effective to perform a series of light passes rather than trying to complete everything in one go. This approach provides better control and reduces the likelihood of errors.

6.2 Speed Control

The rotary tool features a 3-speed control system, adjustable via the Speed Control Button (H). The speed can be changed during operation.

• Speed Range: The tool operates between 8500 r/min and 21000 r/min.
• Indicator: The Gear Indicator Light (G) will illuminate according to the selected speed setting.
• Low Speed (e.g., 8500-16500 r/min): Ideal for felt polishing, delicate wood carving, and working with fragile model parts. Also recommended for wire brushing to prevent bristles from detaching.
• High Speed (e.g., 21000 r/min): Suitable for drilling, carving, and cutting tasks, especially on hard materials like hardwood, metal, and glass.

Always select the appropriate speed based on the material and the accessory being used. Some materials may require slower speeds to prevent heat buildup from friction, which could cause damage.

6.3 Polishing and Cutting Operations

• Always use an undamaged grinding wheel of the correct size and shape for the task.
• For threaded grinding heads and mandrels, use a high-quality mandrel with a complete shoulder of appropriate size and length to reduce the likelihood of rupture.
• Do not "jam" the cutting wheel or apply excessive pressure. Excessive pressure increases the load, making the grinding wheel prone to twisting or getting stuck, which can lead to recoil or rupture.
• Keep your hands clear of the wheel's path. If recoil occurs, the rotating wheel and power tool could be pushed directly towards you.
• If the grinding wheel gets stuck or stops cutting, immediately turn off the power tool. Do not move the tool until the wheel has completely stopped.
• Do not attempt to remove a cutting wheel from a cut while it is still turning.
• To restart a cutting operation in a workpiece, wait until the grinding wheel reaches its maximum speed before carefully re-entering the cut.
• Support large workpieces to minimize snagging or sticking. Supports should be placed near the cut and along the edges of the workpiece.

6.4 Wire Brush Cleaning Operations

Wire brushes can shed wires even during normal operation. Do not apply excessive load to the wire brush. Wire hairs can easily penetrate clothing and skin.

• Allow the wire brush to run at working speed for at least 1 minute before use.
• During this test run, ensure no one is standing in front of or in line with the wire brush, as loose wires may be thrown out.

7. Maintenance

7.1 Battery Care

• To maintain battery health, charge the battery every two months if the tool is not in regular use. This prevents the battery from entering a deep discharge state, which can make it difficult to recharge.
• When the battery is near exhaustion, the tool may shut down more frequently due to locked-rotor protection. If this happens, recharge the battery promptly.

7.2 General Cleaning

• Regularly clean the tool and accessories to ensure optimal performance and longevity.
• Use a soft, dry cloth to wipe down the tool. For stubborn dirt, a slightly damp cloth can be used, ensuring no moisture enters the tool's internal components.
• Clean accessories after each use to remove debris and maintain their effectiveness.

8. Troubleshooting

8.1 Locked-Rotor Protection

This grinder features a built-in locked-rotor protection function to safeguard the motor and lithium battery from damage. If the attachment becomes blocked or stuck on the workpiece, especially at high speeds, the tool will automatically shut down.

• Solution: Remove the tool from the workpiece. Turn the tool off for approximately 3 seconds, then turn it back on.
• Note: If the battery is low, this protection may activate more frequently. Recharge the battery if this occurs.

8.2 Rebound

Rebound is a sudden reaction force caused by a spinning accessory (wheel, wire brush, etc.) getting stuck or entangled. This can cause the tool to move unexpectedly in the opposite direction of the accessory's rotation.

• Prevention:
  • Maintain a firm grip on the power tool, ensuring your body and arms are in a position to resist sudden movements.
  • Be especially careful when working on sharp corners or edges, as these can cause accessories to snag and lead to rebound.
  • When the accessory exits the workpiece, maintain the same direction of entry.
  • Avoid "jamming" the cutting wheel or applying excessive pressure, which increases the risk of the wheel getting stuck.

9. User Tips

• Light Touch: For optimal results and control, use a light touch when operating the tool. Avoid pressing hard, as this can reduce motor speed and effectiveness.
• Accessory Balance: For high-precision work, ensure accessories are properly balanced. Loosen the chuck nut slightly, adjust the accessory to be centered, then re-tighten. Run the tool to check for balance and adjust as needed. Replace damaged or unbalanced accessories.
• Wrench for Bits: Always keep the provided wrench handy for quick and secure accessory changes.
• Battery Life: To maximize battery life, avoid deep discharges and recharge regularly, especially if the tool is stored for extended periods.
• Material Compatibility: Experiment with different speeds and accessories on scrap material to understand the best combination for your specific project and material type.

10. Warranty and Support

10.1 Warranty Information

The JANGKLIFE USB Cordless Rotary Tool comes with a warranty covering damage caused by tool quality within six months from the date of purchase. Damage resulting from improper use or human error is not covered under this warranty. The company may offer additional value-added warranty services for certain products.

Exclusions from Warranty:

• Damage caused by improper use or human error.
• Damage resulting from improper transportation by the user.
• Damage due to failure to use original manufacturer accessories.
• Any product that has been modified or dismantled by unauthorized personnel.
• Replacement of wear parts (e.g., grinding heads, brushes).
• Natural wear and tear.

Warranty Claim Requirements:

• The warranty card must be presented during a warranty claim.
• The fuselage number on the invoice must match the fuselage number on the warranty card and correspond to the machine.
• Please keep your warranty card safe, as reissuance may not be possible if lost.

The company reserves the right to amend these provisions and holds the final interpretation of the warranty service, in compliance with national laws.

10.2 Further Assistance

For detailed instructions, diagrams, and additional information, you may refer to the comprehensive user manual available in PDF format. This document can be accessed here.

For any product support or inquiries, please contact JANGKLIFE customer service or the seller, Stone's Store, through the platform where you made your purchase.