Industrial Blades, Slitting Blade, Shearing Blades ​ from NJJF China Manufacturer. High-quality and Cost-effective. Competitive factory direct price! 
      Self-Owned Factory
Blog Detail
Guide to Use Rotary Slitter Blades
You are here: Home » Blog » Guide to Use Rotary Slitter Blades

Guide to Use Rotary Slitter Blades

Views: 86     Author: Site Editor     Publish Time: 2023-10-23      Origin: Site

The ability to use rotary slitter blades or round cutter blades with expertise is more than a skill; it's an essential asset for industries reliant on precision cutting. From safety to productivity, quality to cost savings, the benefits of proficient usage are far-reaching. In a world where manufacturing demands both precision and efficiency, mastering the art of rotary slitter blade usage is a competitive advantage that should not be underestimated. In this article we will know more about the principle and user guide of  rotary slitter blades.

Round Cutter Blades for Metal Sheet Slitting

Round Cutter Blades for Metal Sheet Slitting

How do rotary slitting blades work?

Before we discuss how to use a rotary slitting blade, let’s first understand how it works. In the world of industrial cutting, precision and efficiency are crucial. Imagine a continuous roll of material, whether paper, film, foil or flexible packaging, that needs to be converted into a narrower strip or roll. In this article, we’ll take a closer look at what a rotary cutter is and how it works, demystifying the mechanics behind this important tool.

Special cutting tools

Rotary slitting knives are cutting tools used in a variety of industries. What is its main purpose? Slit or cut material into narrower widths to convert large continuous rolls into manageable strips. Now, let's dissect its inner workings.

Blade assembly

The core component of a rotary slitter is its blade assembly. The round blade will be securely attached to the mandrel or shaft. And it has an extremely sharp cutting edge, with numerous cutting teeth or serrations around the blade.

Machine settings

The machine setup phase is very important. Typically, the material that is fed into the machine for slitting is in the shape of a continuous roll. Careful adjustments to the tension and alignment of the material are required to facilitate a seamless transition into the slitting process.

Rotational speed is of spinning blades

When the materials and equipment are ready, the slitting machine will be activated, which will start the rapid rotation of the rotary cutter. The most important thing here is that the blade's rotational speed is seamlessly synchronized with the material's feed rate, ensuring precision in every cut.

Instructional material

As the continuous roll of material begins to be processed, it passes gracefully above or below the rotating cutter. Guide rollers and other components play a role in ensuring precise alignment and consistent tension throughout the cutting process.

The art of cutting

The climax of the performance comes when the material meets the spinning cutter. This is where the magic happens - the material is cut by the blade due to the clever interaction of the sharp cutting edge and the blade's teeth with the material's surface. At this point, the continuous roll is converted into a web or individual narrower strips.

Multiple slits for optimal productivity

Some rotary slitting knives feature multiple cutting blades arranged in parallel, making them efficient tools. This ingenious design enables simultaneous cutting of multiple strips or rolls from a continuous roll of material, significantly increasing the efficiency and productivity of the entire operation.

Season finale

When the slitting process comes to an end, the material has changed. They are transformed from their original continuous rolls into narrower strips or nets. Typically, these slit materials are wound into individual rolls or further processed according to specific width requirements.

Circular Rotary Dished Cutting Blade

Circular Rotary Dished Cutting Blade

Precautions when using rotary slitter blades

1.Before you start using the rotary slitting blade

Always consider your safety when using a rotary blade, including before using it. You need to wear protective equipment correctly, including shields, work gloves, hard hats, safety shoes and safety glasses.

Keeping your workspace tidy and organized is not only for efficiency but also for your safety. Remove any unnecessary objects or clutter that might impede your movements or disrupt the cutting process. A tidy workspace is vital to preventing accidents and promoting smooth operations.

To become proficient in the use of rotary knives, comprehensive training is essential. Whether it’s the unique features of a rotary knife machine or the safety mechanisms of its controls, you need to familiarize yourself with them before using them. If you are unable to determine the details of the machine yourself, consult the instruction manual that came with the machine or contact an experienced operator for guidance.

2.When the rotary slitting blade is not in use

Store rotary cutter blades vertically on a dry rack. Avoid laying it flat as this may cause deformation. Be careful with the serrations on the rotary cutter blade as they are hard and sharp. Avoid any impacts or falls to the ground. Please carefully unplug the power cord or perform proper lockout/tagout procedures. This step will prevent injuries from accidental activation of the rotary knife.

3.Before installing the rotary slitting blade

Before installing the rotary slitting blade, test the performance of the saw table and ensure that the cutting direction indicated by the arrow on the rotary slitting blade is consistent with the rotation direction of the saw table. Be careful not to install it in the opposite direction, as this may not only cause the blade to break, but may also cause an accident.

Inspect the rotating slitting blades for any cracks, twists, flattening, missing teeth or other defects. It is absolutely essential that the blade remains sharp and securely fastened. A dull or damaged blade can cause uneven cuts or require excessive force, greatly increasing the risk of an accident.

4.After installing the rotary slitting blade

Check to make sure the center hole of the rotating slitting blade is securely fastened to the saw table flange. Check to see if the gasket is present and make sure it is seated correctly. Then, gently test the rotating slitting blade for eccentric rotation.

5.During use

Apply consistent and controlled pressure, ensure that you do not exceed the specified maximum speed. Avoid using excessive force, which could potentially cause the blade to bind or heighten the risk of accidents.

Pay close attention to the hardness requirement of the rotary slitter blades. Sometimes, even if the material is of high quality, improper hardness requirements can lead to blade chipping or softening.


To maintain the ongoing performance and safety of your rotary knife, it's essential to conscientiously follow a scheduled maintenance plan in accordance with the manufacturer's guidelines. This routine encompasses tasks such as sharpening or replacing blades, lubricating moving parts, and conducting thorough inspections to ensure the correct operation of safety features.

When it comes to using rotary slitter blades, precision and safety go hand in hand. By following these guidelines diligently, you can harness the power of these remarkable tools while prioritizing the well-being of all involved.

Our company got high appreciation from our customers by high quality, good reputation and reasonable prices at home and abroad. Welcome to contact us and visit our factory.



   Mingjue Industrial Park, Nanjing, 
      Jiangsu Province, China
Copyright  2019 Nanjing Jingfeng Knife Manufacturing CO., Ltd. All rights reserved. Powered by  Sitemap | XML