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Item | Specification |
|---|---|
Product Name | Precision Round Blade / Circular Slitter Blade |
Product Type | Rotary Cutting Knife |
Blade Material | D2, SKD11, M2, HSS, Tungsten Carbide, Stainless Steel |
Manufacturing Process | Forging + CNC Machining + Vacuum Heat Treatment + Precision Grinding |
Outside Diameter | Customized |
Inside Diameter | Customized |
Thickness | Customized |
Hardness | HRC 58–64 (Material Dependent) |
Edge Type | Single Bevel, Double Bevel, Razor Edge, Serrated |
Surface Finish | Precision Ground / Mirror Polished |
OEM / ODM | Available |
Applications | Paper, Textile, Packaging, Film, Foil, Nonwoven, Plastic |
A precision round blade, also known as a circular slitter blade or rotary knife, is a disc-shaped cutting tool designed for continuous cutting, slitting, trimming, and converting operations. The blade rotates at high speed against an anvil roll or mating blade to produce clean, accurate cuts with minimal burrs.
Round blades are widely used in paper converting, textile processing, flexible packaging, plastic film production, foil slitting, label manufacturing, and nonwoven fabric processing.
Compared with straight knives, circular blades provide smoother cutting, higher production speeds, lower cutting resistance, and improved dimensional consistency during continuous operation.
MetalKeen manufactures precision circular knives engineered for high-speed production lines and demanding industrial applications.
High cutting precision
Excellent edge retention
Superior wear resistance
Low cutting resistance
Reduced dust and burr formation
Stable high-speed operation
Long resharpening intervals
High dimensional accuracy
Excellent balance for rotary cutting
OEM customization available
Different materials require different blade steels.
Material | Recommended Application |
D2 Tool Steel | Paper, cardboard, packaging |
SKD11 | High-speed paper converting |
M2 High Speed Steel | Textile, nonwoven, film |
Tungsten Carbide | Abrasive materials and long production runs |
Stainless Steel | Food-grade and corrosion-resistant applications |
Selecting the correct blade material improves edge life, reduces downtime, and lowers production costs. Carbide grades are preferred for abrasive materials and long production runs, while D2 and SKD11 are widely used in paper, packaging and general converting.
Every precision round blade is manufactured through a controlled production process.
Premium Steel Inspection
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Forging
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Rough Machining
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Vacuum Heat Treatment
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Stress Relief
↓
Precision CNC Turning
↓
Double-side Grinding
↓
Edge Grinding
↓
Mirror Polishing (Optional)
↓
Hardness Testing
↓
Dynamic Balance Inspection
↓
Final Inspection
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Rust Protection
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Packaging
Strict process control ensures consistent hardness, excellent concentricity, and superior cutting performance.
Typical manufacturing capabilities include:
Outside Diameter: Customized
Inside Diameter: Customized
Thickness: Customized
Hardness: HRC 58–64
Concentricity: According to Drawing
Flatness: According to Drawing
Surface Roughness: Precision Ground
Edge Angle: Customized
OEM Manufacturing: Supported
Different cutting applications require different edge designs.
Available edge configurations include:
Single Bevel
Double Bevel
Razor Edge
Flat Edge
Serrated Edge
Scalloped Edge
Perforating Edge
Proper edge geometry reduces cutting force, minimizes burr formation, and improves blade life.
To maximize cutting quality and service life, multiple finishing options are available.
Available finishes include:
Precision Grinding
Mirror Polishing
Fine Grinding
DLC Coating (Optional)
TiN Coating (Optional)
Anti-rust Protection
Passivation (Stainless Steel)
Smooth blade surfaces reduce friction, lower cutting temperatures, and help prevent material build-up during continuous operation.
Precision round blades are widely used in converting and slitting industries.
Applications include:
Paper Converting
Tissue Paper Production
Textile Processing
Nonwoven Fabric Manufacturing
Flexible Packaging
Plastic Film Slitting
Aluminum Foil Processing
Label Production
Rubber Processing
Adhesive Tape Manufacturing
Printing Industry
Food Packaging
Circular Blade | Straight Blade |
Continuous rotary cutting | Reciprocating cutting |
Higher production speed | Lower production speed |
Lower cutting resistance | Higher cutting force |
Suitable for roll materials | Suitable for sheet materials |
Longer production runs | Better for intermittent cutting |
Lower vibration | Higher impact loading |
Circular blades are generally preferred for high-speed converting lines processing paper, textile, film, and packaging materials because they provide smoother cuts and more consistent edge quality.
Every blade undergoes comprehensive quality inspection before shipment.
Inspection includes:
Raw Material Certification
Chemical Composition Analysis
Hardness Testing
Outside Diameter Inspection
Bore Diameter Inspection
Flatness Measurement
Concentricity Inspection
Surface Roughness Measurement
Dynamic Balance Test
Visual Inspection
Inspection reports are available upon request.
A precision round blade is a circular cutting tool used for slitting, trimming, and converting continuous materials such as paper, film, textile, foil, and packaging products.
D2 and SKD11 are excellent for paper and packaging applications, while tungsten carbide offers the longest service life for abrasive materials and high-speed production.
Paper converting, textile manufacturing, flexible packaging, nonwoven processing, plastic film production, aluminum foil converting, label manufacturing, and food packaging.
Yes. We manufacture precision round blades according to customer drawings, OEM specifications, blade samples, and machine models.
Yes. We provide vacuum heat treatment, quenching, tempering, cryogenic treatment (optional), and precision grinding to optimize hardness and cutting performance.
We conduct hardness testing, dimensional inspection, concentricity measurement, flatness verification, dynamic balance testing, and full material traceability before shipment.
Looking for a reliable manufacturer of precision round blades or custom circular slitter knives?
MetalKeen provides complete OEM manufacturing services, including material selection, precision machining, vacuum heat treatment, fine grinding, and strict quality inspection. Whether you need blades for paper, textile, packaging, film, or nonwoven production lines, our engineering team can manufacture to your exact drawings and performance requirements.
Send us your blade drawings, dimensions, or machine specifications today to receive a fast quotation and professional engineering support.
