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A disk slitting knife, also known as a circular slitter blade or rotary slitting knife, is a precision-engineered industrial cutting tool used to slice materials like paper, film, foil, rubber, and metal into narrower strips. These knives are typically circular with a continuous edge, allowing for high-volume, uniform incisions in a cyclical motion.
Common Types and Bevels
The choice of a slitting knife often depends on the material being cut and the required precision:
- Single Bevel: Features one angled edge; often used for more precise, efficient cuts in rubber, paper, and food processing.
- Double Bevel: Features two angled edges (like a standard V-shape), reducing cutting resistance and creating flatter incisions without burrs.
- Toothed/Perforated: Used to create uniform punctured holes or "tear-off" lines, common in packaging and paper products.
- Top and Bottom Knives: Often work in pairs (shear slitting), where a "top" dished knife works against a "bottom" knife to slit rolls of material.
Material Composition
Blades are manufactured from various high-performance steels to balance hardness and durability:
- M2 High-Speed Steel (HSS): A common choice that holds its edge well and can withstand higher temperatures without losing hardness.
- D2 Tool Steel: Frequently used for shear slitting due to its wear resistance.
- Tungsten Carbide: Offers extreme hardness and a long service life, ideal for fine cutting or very hard materials like lithium battery components.
- Stainless Steel: Preferred for food-grade applications or environments where corrosion resistance is critical.
Key Specifications for Replacement
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Circular Knives
Carolina Knife & Manufacturing
https://www.carolinaknife.com › circular-razor-slitters
Carolina Knife & Manufacturing
https://www.carolinaknife.com › circular-razor-slitters
We manufacture these extremely sharp razor slitter blades from many materials and for all conversion industries, including circular razor slitters.Read more
$4 to $1385–12 day delivery30-day returns
Circular Slitter Blades for Precision Rotary Slitting - Baucor
Baucor
https://www.baucor.com › collections › circular-slitter-b...
Baucor
https://www.baucor.com › collections › circular-slitter-b...
Precision circular slitter blades for clean, accurate cutting. Custom rotary slitting knives with fast delivery and expert engineering support by Baucor.
Slitting Knives | Rotary Slitter Knives | Disk Knives
lcknife.com
https://www.lcknife.com › slitting-knife_c1
lcknife.com
https://www.lcknife.com › slitting-knife_c1
Slitting knifes,circular and rotary with sharp edges mostly,are widely used in rewinding machine for paper,film,tape and rolled strip slitting.
Disc Type Blade Slitting Knife
llypack.com
https://www.llypack.com › dp-disc-type-blade-slitting-k...
llypack.com
https://www.llypack.com › dp-disc-type-blade-slitting-k...
Disc Blade Slitting Machine Heat Seal Cotton Machine. Brand: LLY PACK; Packaging: Case; Place of Origin: China.Read more
High Quality Disc Slitter Knives for Precision Cutting
Alibaba.com
https://www.alibaba.com › ... › Industrial Blades
Alibaba.com
https://www.alibaba.com › ... › Industrial Blades
Enhance cutting precision and efficiency with high-quality disc slitter knives . Ideal for industrial applications, offering durability and superior ...
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People also ask
Web results
If You Use A Disc Grinder….this Is A Great Tool!
American Bladesmith Society
https://www.americanbladesmith.org › community › if-...
American Bladesmith Society
https://www.americanbladesmith.org › community › if-...
Jun 15, 2010 — I use both flat and beveled discs...the flat disc for working on guards, handle materials and such, and the beveled disc(s) for blade grinding.Read more
The Plow Disk Knife!
YouTube · purgatoryironworks
8.9K+ views · 4 years ago
YouTube · purgatoryironworks
8.9K+ views · 4 years ago
Just for fun, we take and old plow disk from a local field and see if it makes a good knife. And if it doesn't, at least it can look cool!
Rotary disc blade knife for coil slitting line
sparkblades.com
https://sparkblades.com › ... › Slitting knives
sparkblades.com
https://sparkblades.com › ... › Slitting knives
Can cut 0.2-3.2mm of plate for cold milling and 1.0-12.7mm sheet for hot milling. Currently available size:OD 320,400,500,800mm,TÂ ...Read more
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Web results
Tungsten Carbide Disc Slitting Knife, Rotary Cutter, ...
Made-in-China.com
https://m.made-in-china.com › product › Tungsten-Car...
Made-in-China.com
https://m.made-in-china.com › product › Tungsten-Car...
It has an excellent processability and strength, making it ideal for use in manufacturing complex, thin blades and metal cutting tolls that require a high ...Read more
· Review by MIC_BUYER

