The Bonsaii C261-C Cross-Cut Paper Shredder is a reliable and compact office tool, designed to help keep sensitive information safe by turning paper into small cross-cut shreds. However, like any machine, it can sometimes encounter issues. One of the most common complaints among users is a loud or unusual noise while the shredder is in operation. If you’ve noticed that your shredder has become significantly noisier than usual, don’t panic!
This blog post will walk you through potential causes for the loud noise, how to troubleshoot them, and steps to fix the issue.

Why Does Your Bonsaii C261-C Shredder Make Loud Noise?
Before diving into solutions, let’s first explore the potential reasons why your shredder might be making loud noises. The Bonsaii C261-C Paper Shredder is a robust machine, but like any mechanical device, certain issues can cause it to become noisy.
The following are some common causes for the problem:
1. Improper Placement
The most straightforward cause for a loud noise could be improper placement. If your shredder is not placed on a flat and stable surface, it may vibrate excessively, resulting in increased noise levels.
2. Overloading the Shredder
Another common cause for loud noises is overloading the shredder. The Bonsaii C261-C has a recommended shredding capacity of 8 sheets of paper at a time. Exceeding this capacity can put strain on the motor and blades, resulting in louder operation and possible damage to the internal components.
3. Paper Jams
A paper jam can lead to grinding sounds or unusual loud noises when the motor struggles to push the paper through. If you’ve been feeding too many sheets of paper at once or have inserted the wrong materials (like plastic or adhesive items), the shredder’s internal mechanisms could become stuck, causing it to make a loud grinding noise.
4. Overheating
The Bonsaii C261-C is designed with an automatic overheating protection feature. If the shredder is continuously used beyond its capacity or for extended periods, it can overheat. The shredder will make a louder noise to indicate that it is struggling, and eventually, the overheating indicator light will turn on, signaling that the machine needs to cool down.
5. Foreign Objects in the Shredder
If small objects like paper clips, staples, or bits of foreign debris fall into the shredder, they can cause the motor to work harder than usual, leading to increased noise. These objects may also get stuck in the shredder’s blades, causing the noise to escalate.
6. Damaged or Worn-Out Components
Over time, components within the shredder, such as the blades or motor, may become worn out. If the shredder is consistently used without proper maintenance, or if the blades have become dull, they might cause a louder grinding or buzzing noise as they struggle to shred paper efficiently.
How to Troubleshoot Loud Noise Issues in Your Bonsaii C261-C Shredder
1. Check the Placement

The first thing you should do when your shredder becomes too loud is check where it’s located. Is the surface level? Are there any objects causing the shredder to vibrate more than usual?
Solution:
Place your Bonsaii C261-C Paper Shredder on a flat and stable surface. Avoid placing it on uneven tables, soft surfaces like carpets, or areas with high traffic. The shredder should be positioned on a sturdy, hard surface like a desk or workbench to reduce excessive vibrations.
2. Avoid Overloading the Shredder

The Bonsaii C261-C is designed to handle up to 8 sheets of paper at once. Overloading the shredder beyond its capacity will put excessive strain on the motor, resulting in loud grinding noises.
Solution:
Stick to the recommended 8 sheets of paper per load. If you’re shredding thicker materials like cardboard or plastic, be sure to consult the manual for specific instructions on the maximum paper thickness and weight. For credit cards or other dense materials, feed one at a time.
3. Check for Paper Jams
Paper jams are one of the most common causes of loud noise. When the shredder’s blades become stuck with paper, the motor has to work harder to push the paper through, which can result in strange or loud noises.

Solution:
- Move the control panel from the “Auto” position to the “REV” position (Reverse). This will reverse the motor’s direction and help release any jammed paper. If necessary, you can manually pull out the excess paper.
- For more serious jams, repeat this process several times, ensuring you remove any leftover paper scraps.
4. Allow the Shredder to Cool Down
If the shredder is making loud noises due to overheating, it could be a sign that the motor is being overworked. The Bonsaii C261-C is equipped with an overheating protection system that will cause the shredder to stop functioning if it exceeds its safe operating temperature.
Solution:
- When the shredder’s overheating indicator light turns red, unplug the machine and allow it to cool down naturally. The recommended cooling time is approximately 40 minutes.
- Avoid continuous, prolonged shredding to prevent the machine from overheating.

5. Inspect for Foreign Objects
Foreign objects like paper clips, staples, and small bits of debris can get stuck in the shredder, causing the motor to struggle and produce loud noises.
Solution:
Check the feed opening and blades for any stuck items. If you find any, carefully remove them. Be cautious when using sharp tools to clean the machine to avoid damaging the internal components.
6. Maintain the Shredder
Regular maintenance is key to ensuring the longevity of your Bonsaii C261-C and preventing loud noises caused by dull or worn-out blades. Over time, the blades can accumulate paper dust and become less efficient.
Solution:
- Use a shredder lubricant pack, like the Bonsaii lubricant packs, to maintain the shredder. Insert the lubricant pack into the shredder, switch the control panel to “Auto” mode, and allow the lubricant to be shredded. Repeat the process to ensure smooth operation.
- Never use inflammable liquids or cleaners to lubricate the shredder, as they may cause damage or even pose a safety hazard.
When to Contact Customer Support
If none of the troubleshooting solutions resolve the loud noise issue, there may be a deeper mechanical problem with your Bonsaii C261-C Paper Shredder.

Contact Customer Support:
- Email: customer-care@bonsaii.com
- Phone: 1-844-728-6917
Bonsaii offers support for troubleshooting and will assist you with potential repairs or replacements if necessary.
Final Thoughts
The Bonsaii C261-C Paper Shredder is a fantastic tool for any office or home environment, but like any piece of machinery, it may encounter occasional issues. If your shredder is making unusually loud noises, use the troubleshooting steps outlined above to identify and fix the problem.
Always remember to perform regular maintenance, follow the recommended usage guidelines, and take proper care of your shredder to ensure it continues to operate smoothly and quietly for years to come.