China Slitting Round Blade/Disc Knife - High Precision Suppliers for Steel & Non-Ferrous Metal Factory
The slitting disc knife is an essential tool for various industries, including large steel factories, steel pipe plants, non-ferrous metal processing facilities, tying material manufacturers, cold rolling plants, packaging material factories, steel processing service centers, and strip mills. Ideal for manufacturers and machine suppliers seeking high-precision solutions, this product exemplifies the quality that Chinese suppliers are renowned for. Whether you're in need of precision cutting for steel or other materials, our slitting disc knife meets the rigorous demands of modern production environments. Choose our factory for reliable and efficient cutting tools that enhance operational productivity
Inner Circle ToleranceH3For specific inner circle specs
Surface RoughnessRa 0.1 µmRoutine production standard
Standard Tolerance± 0.001 mmThickness tolerance standard
🌡️All high-precision products are tested in a constant temperature room, ensuring measurement accuracy and reliability for every unit produced.
We can now guarantee that the thickness tolerance of ± 0.0005mm. For a certain inner circle, the tolerance can reach H3. All high-precision products are tested in a constant temperature room. With the continuous improvement of machining precision of sheet metal, we have developed ultra high precision cutting tools, whose accuracy has so far been matched by precision milling tools. ± 0.001mm thickness tolerance, and Ra 0.1µm surface roughness are our routine standards. Using our know-how and expertise, we also meet our customers' higher tolerances for thickness, parallelism, flatness, outer and inner rings.
🔧Optional rubber sleeve attachment available on the outer diameter — protecting blades from scratches during export and handling.
We can also attach a rubber sleeve to the outer diameter according to the customer's request, so that it can be exported smoothly with the knife to prevent scratches. The rubber sleeve is made of natural primary rubber such as green amine and acrylonitrile butadiene rubber (IRHD: 78 ~ 75), Polyurethane isolation ring (IRHD: 80 ~ 85).
The blade sleeve material is S45C, S50C, 65Mn, etc., of which S45C is a commonly used material. The purpose of the blade bushing is to maintain a certain width between the dividing round knife, the upper knife and the lower knife, and the horizontal gap adjustment. Commonly used blade sleeve thickness ranges between 0.9mm ~ 100mm (grinding material — after forging, machining, heat treatment, and leveling grinding), with a hardness of 47 ± 2 degrees. The thickness tolerances of the blade casing are also controlled within 0.003mm/mt.
In order to reduce weight, we can also produce aluminum spacers using AL7075, with the thickness tolerance also controlled within 0.003mm/mt.
Q
What is the tightest thickness tolerance your products can achieve?
Our products can achieve a thickness tolerance of ± 0.0005mm, with a standard production tolerance of ± 0.001mm. For specific inner circle dimensions, the tolerance can reach H3 grade, meeting the most demanding precision requirements.
Q
How are high-precision products tested and quality controlled?
All high-precision products are inspected in a dedicated constant temperature room to eliminate thermal expansion effects and ensure measurement accuracy. We control tolerances for thickness, parallelism, flatness, and both outer and inner ring dimensions.
Q
What materials are available for blade sleeves and spacers?
Blade sleeves are typically made from S45C (most common), S50C, or 65Mn steel. For weight-sensitive applications, we also offer aluminum spacers made from AL7075, providing excellent strength-to-weight ratio while maintaining the same tight tolerances.
Q
What is the purpose of the rubber sleeve on the outer diameter?
The rubber sleeve is attached to the outer diameter to protect the blade from scratches during packaging, shipping, and handling. It is available in natural rubber (IRHD: 78–75) or polyurethane isolation ring (IRHD: 80–85), and can be added upon customer request.
Q
What thickness range is available for blade sleeves?
Blade sleeves are available in thicknesses ranging from 0.9mm to 100mm. Each sleeve undergoes forging, machining, heat treatment, and leveling grinding, achieving a hardness of 47 ± 2 degrees and a thickness tolerance controlled within 0.003mm/mt.
Q
Can you accommodate custom tolerance requirements beyond your standard specifications?
Yes. Beyond our standard tolerances, we work closely with customers to meet higher requirements for thickness, parallelism, flatness, and outer/inner ring dimensions. Please contact us with your specific requirements and we will provide a tailored solution.
