Corrugated Board Knives: Slitter, Slotter and Cut-Off Blade Selection Guide
Understand slitter, slotter and cut-off knife roles and what to include when ordering replacement corrugated knives.
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Granulator Blades
Precision Blades for
Precision Blades for
Plastic Recycling Equipment
Factory-direct replacement blades engineered for granulators and recycling machines.
Shredder Blades
Heavy-Duty Cutting Solutions for Industrial Shredders
Reliable replacement knives for demanding recycling applications.
Industrial Cutting Knives
Custom Engineered Blades for Your Equipment
OEM replacement and custom manufacturing solutions.
Factory Direct SupplyManufacturing in Ma'anshan, Anhui Province, China
OEM ReplacementCompatible with major brands
Quality InspectionMaterial & dimension checked
Global ExportHong Kong support
High-Performance Blade Catalog
Replacement models for common machines, plus custom designs manufactured to your exact specifications.
Granulator Blades
High-wear D2 & Carbide blades for plastic recycling.
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Shredder Blocks
Heavy-duty blocks for single & double shaft shredders.
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Circular Slitter Knives
Precision slitter blades for film, foil, and paper.
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Corrugated Knives
High-precision serrated knives for board production.
View DetailsIndustries We Serve
Precision-engineered cutting solutions optimized for your specific application.
Plastics Recycling
High-wear granulator and pelletizer blades for PET, HDPE, and purgings.
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Industrial Shredding
Tough shredder blocks and hooks for e-waste, tires, and wood processing.
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Film & Foil Converting
Razor-sharp slitter knives ensuring clean cuts on plastic films and textiles.
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Corrugated Board
Precision serrated cut-off knives and slotters for the paper packaging industry.
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WHO WE ARE
China-Made Blades. Hong Kong Service & Accountability.
Replacement industrial machine knives and custom cutting solutions, with manufacturing in Ma'anshan, Anhui Province, China and international customer support from Hong Kong.
Ma'anshan, Anhui Province, China
Manufacturing & Production
Hong Kong
Customer Service & Export Coordination
Custom Manufacturing Made Simple
Can't find your part number? No problem. We manufacture to your exact specifications.
1. Measure & Sketch
Send us a technical drawing, a simple hand sketch with dimensions, or mail us a sample blade.
2. Quote & Confirm
We review your drawings, dimensions and application requirements to confirm suitable material options, pricing and estimated lead time.
3. Produce & Ship
After specifications and order terms are confirmed, production is scheduled according to material availability and the agreed lead time. We coordinate inspection and shipping arrangements.
Have a Drawing or Part Number?
Send us your specifications for a quotation.
From Specification to Finished Blades
A closer look at custom cutter inserts and the inspection work behind the finished batch.
FEATURED PROJECT · EUROPE
Custom Shredder Cutter Inserts
Custom D2 cutter inserts with TiN coating, inspected for dimensions and hardness before packing.
VIEW PROJECT DETAILSUncompromising Quality Control
Inspection requirements for hardness, dimensions and edge geometry are defined by the approved product specification.
1. Hardness Testing
Hardness requirements are selected according to the blade material and application. Appropriate inspection methods and acceptance criteria are confirmed based on the product specification.
2. Dimensional Inspection
Relevant dimensions and geometric features, such as thickness, hole spacing, parallelism and bevel geometry, are checked against the approved drawing as specified for the order.
3. Secure Packaging
Blades are packed with suitable edge protection and protective materials according to product geometry, shipment requirements and the agreed packing arrangement.
Technical Guides & Insights
Practical guides to industrial blade selection, materials, compatibility, maintenance, and replacement.
Packaging Guide
Converting Guide
Razor vs. Shear vs. Score Slitting: Choosing the Right Knife for Film and Foil
Compare razor, shear and score slitting, then check the blade geometry and machine details needed for a correct replacement.
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Compatibility
Cumberland vs. Rapid Granulator Blades: Compatibility Guide
Compare Cumberland and Rapid knife fit by machine model, dimensions, mounting pattern and bevel before ordering a replacement.
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Sizing Guide
How to Measure a Granulator Blade for a Correct Replacement
Five fit checks: length, width, thickness, mounting-hole details and bevel orientation.
Read Full GuideFrequently Asked Questions
Can't find the answer you're looking for? Email us at info@hk-bladetech.com.
Technical answers directly from our engineering team.
Why choose HK Blade Tech over local suppliers?
Factory Direct + Engineering Expertise. We eliminate middleman markups to deliver uncompromised quality at direct factory prices.
- Material Options: D2, HSS, carbide and powder-metallurgy grades can be selected according to abrasion, impact load and target service life.
- Precision Manufacturing: CNC grinding and dimensional inspection help control parallelism, hole position and cutting-edge geometry.
- Controlled Heat Treatment: Hardness targets are selected to balance wear resistance and toughness for the actual application.
- Application Support: Material, heat-treatment and coating options are reviewed against the material being cut and operating conditions.
How can I place an order or get a quote?
Send your machine model, drawing or dimensions through our Request a Quote form. We review your requirements and aim to respond promptly with suitable material options, pricing and an estimated lead time.
- Standard Blades: Tell us your machine model (e.g., Cumberland 1215).
- Custom Knives: Send a photo, drawing, or hand sketch to info@hk-bladetech.com.
How can I extend the life of my machine knives?
We recommend two primary strategies to maximize longevity:
- Correct Gap Setting: Follow the machine manufacturer’s recommended rotor-stator clearance. The correct gap depends on the machine, blade geometry and feed material.
- Material Selection: Abrasive materials such as glass-filled plastics may require powder-metallurgy steel, coatings or carbide-inlaid blades to extend service life.
How do I know when to replace my blades?
Timely replacement protects your equipment. Watch for these warning signs:
- Increased Burrs & Dust: Dull blades shatter plastic instead of cutting it cleanly.
- Abnormal Noise & Vibration: Indicates micro-chipping. Continuing risks severe spindle damage.
- Higher Amp Draw: Your motor is working significantly harder.
- Visible Discoloration: Blue-purple oxidation indicates loss of physical properties due to high-friction heat.
Pro Tip: We highly recommend keeping a spare set of blades on the shelf to minimize costly machine downtime during changeovers.
Which blade material is right for my application?
Choosing the correct alloy lowers your cost-per-ton. Here is our quick guide:
- Standard Plastics (PE/PP/PET): Use Premium D2 / SKD11 for excellent cost-performance.
- Glass-Filled Plastics: Consider powder-metallurgy steel, a wear-resistant coating or carbide depending on glass content and impact load.
- Highly Abrasive Materials: Carbide-inlaid blades may reduce changeovers and cost per ton when impact loading is controlled.
- Film & Foil Slitting: HSS and suitable low-friction coatings can improve edge stability and reduce material adhesion.