ROCKBROS RKS626 Bike U Lock and Cable Instruction Manual

1. Introduction

Thank you for choosing the ROCKBROS RKS626 Heavy Duty Anti-Theft Bike U Lock with Cable. This manual provides essential information for the proper setup, operation, and maintenance of your new bike lock. Please read these instructions carefully before use to ensure optimal security and product longevity.

The ROCKBROS U Lock is designed for robust security, featuring a high-strength aluminum alloy body, a zinc alloy lock core, and a protective silicone rubber cover. It comes with a supplementary steel cable for extended locking options and a mounting bracket for convenient transport.

2. Package Contents

• 1 x ROCKBROS U Lock
• 1 x 1.2M/4Ft Steel Cable
• 2 x Keys
• 1 x Mounting Bracket

3. Product Features

• Heavy Duty Anti-Theft Design: Constructed from high-strength steel with a maximum diameter of 22.5mm, resistant to cutting tools.
• Advanced Lock Core: Features a precise zinc alloy C-class anti-theft lock cylinder to prevent technical picking.
• Protective Silicone Cover: A durable silicone material covers the U-lock body, preventing scratches to your bike frame.
• Extended Security with Cable: Includes a 1.2M/4Ft double-looped steel cable for securing additional components or larger objects.
• Convenient Mounting Bracket: Allows for easy attachment and detachment of the U-lock to your bike frame for transport.

Image: The ROCKBROS U Lock is engineered to withstand various forms of attempted damage, including drilling, hydraulic cutting, hammering, and grinding, demonstrating its robust anti-theft capabilities.

4. Setup

4.1 Mounting Bracket Installation

The included mounting bracket allows you to securely attach the U-lock to your bike frame for easy carrying.

1. Identify a suitable location on your bike frame (e.g., seat post, down tube) where the bracket will not interfere with pedaling or other bike components.
2. Disassemble the bracket by unscrewing the central screw.
3. Place the two halves of the bracket around the bike frame.
4. Re-insert and tighten the screw to secure the bracket halves together. Ensure it is tight enough to prevent rotation but not overtightened to damage the frame.
5. Attach the U-lock to the bracket by sliding it into the designated slot until it clicks securely into place.

Image: Visual guide demonstrating the eight steps for installing the U-lock mounting bracket onto a bicycle frame, ensuring secure attachment for transport.

5. Operating Instructions

5.1 Using the U Lock

1. Insert the key into the lock cylinder and turn it to unlock the shackle.
2. Remove the shackle from the lock body.
3. Position the U-lock around your bike frame and a secure, immovable object (e.g., bike rack, pole). Ensure the lock passes through the frame and at least one wheel.
4. Re-insert the shackle into the lock body and turn the key to lock it. Remove the key.

Image: The U Lock is shown securing a bicycle by passing through the rear wheel and frame, attaching it to a bike rack.

Image: The U Lock is demonstrated securing the front wheel of an electric scooter, highlighting its versatility for various personal vehicles.

5.2 Using the Steel Cable

The 1.2M/4Ft steel cable provides additional security and flexibility.

1. After securing your bike with the U-lock, loop the steel cable through any unsecured parts of your bike, such as the front wheel, seat, or helmet.
2. Pass one end of the cable through the loop at the other end, creating a lasso.
3. Secure the looped end of the cable by passing the U-lock shackle through it before locking the U-lock. Alternatively, if the U-lock is already secured, you can loop the cable around a part of the U-lock itself.

Image: A bicycle is secured using both the U-lock on the frame and a steel cable wrapped around the front wheel and a stationary post, demonstrating comprehensive security.

6. Maintenance

• Lubrication: Periodically apply a small amount of graphite lubricant or a silicone-based spray to the lock cylinder to ensure smooth operation. Avoid oil-based lubricants as they can attract dirt.
• Cleaning: Wipe the U-lock and cable with a damp cloth to remove dirt and grime. The silicone cover can be cleaned with mild soap and water.
• Storage: When not in use, store the lock in a dry place to prevent rust and corrosion.
• Key Care: Keep your keys safe and avoid bending or damaging them. It is recommended to keep one key in a secure location as a spare.

7. Troubleshooting

• Difficulty Inserting/Turning Key: This can be caused by dirt or lack of lubrication in the lock cylinder. Apply graphite lubricant or silicone spray and try again. Ensure the key is fully inserted.
• Shackle Stuck: If the shackle is difficult to remove or insert, check for any obstructions. Ensure the lock mechanism is fully disengaged when unlocked. Lubrication may also help.
• Mounting Bracket Loose: If the mounting bracket becomes loose, re-tighten the screw. If it continues to loosen, consider adding a thin rubber shim between the bracket and your bike frame for a tighter fit.

8. Specifications

Image: A diagram illustrating the key dimensions of the U-lock, including its overall height, width, and the thickness of the shackle, measured in both centimeters and inches.

9. Warranty and Support

The ROCKBROS RKS626 Bike U Lock and Cable comes with a 1-year manufacturer's warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use.

For warranty claims, technical support, or any questions regarding your product, please contact ROCKBROS customer service through the retailer where you purchased the product or visit the official ROCKBROS website for contact information.

Please retain your proof of purchase for warranty purposes.