Industrial machine knife manufacturing
Engineered for Cumberland, Vecoplan & More

Premium Industrial
Blade Manufacturer.

Precision cutting tools made at our factory in Ma'anshan, China — engineered, quality-checked and shipped by our English-speaking sales & support team in Hong Kong.
Standard drop-in replacements or custom-built to your exact specs.

View Product Catalog Request Custom Quote
Granulator and shredder blades for recycling equipment
Plastics Recycling & Reduction

High-Wear Granulator
& Shredder Blades.

Available in D2, HSS and carbide options for dependable
wear resistance in demanding recycling applications.

View Granulator Blades Request Custom Quote
Circular slitter and corrugated board knives
Converting & Packaging

Circular Slitters &
Corrugated Knives.

Precision-ground cutting edges for clean, consistent cuts
on film, foil, paper and corrugated board production lines.

View Circular Knives Request Custom Quote
Compatible Replacement Parts For:
CUMBERLAND VECOPLAN RAPID ZERMA WEIMA HERBOLD

Brand and model names are used for compatibility reference only. All trademarks belong to their respective owners.

High-Performance Blade Catalog

Replacement models for common machines, plus custom designs manufactured to your exact specifications.

Granulator Blades

Granulator Blades

High-wear D2 & Carbide blades for plastic recycling.

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Shredder Blocks

Shredder Blocks

Heavy-duty blocks for single & double shaft shredders.

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Circular Slitter Knives

Circular Slitter Knives

Precision slitter blades for film, foil, and paper.

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Corrugated Knives

Corrugated Knives

High-precision serrated knives for board production.

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Industries We Serve

Precision-engineered cutting solutions optimized for your specific application.

Plastics Recycling Blades

Plastics Recycling

High-wear granulator and pelletizer blades for PET, HDPE, and purgings.

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Industrial Shredding Knives

Industrial Shredding

Tough shredder blocks and hooks for e-waste, tires, and wood processing.

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Film & Foil Converting Blades

Film & Foil Converting

Razor-sharp slitter knives ensuring clean cuts on plastic films and textiles.

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Corrugated Board Knives

Corrugated Board

Precision serrated cut-off knives and slotters for the paper packaging industry.

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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

Our engineers will review your specs and provide a detailed quote and material recommendation within 24 hours.

3. Produce & Ship

Once confirmed, we start production immediately. We handle quality control and global shipping logistics.

Ready to Upgrade? Send Us Your Specs Today

Since 2000 Manufacturing experience
OEM Replacement & custom blades
Global Export and logistics support
Who We Are

China-Made Blades. Hong Kong Service & Accountability.

HK Blade Tech combines manufacturing in Ma'anshan, China with sales, quality coordination and export support in Hong Kong. We supply OEM-equivalent replacement knives and custom blades matched to your machine, material and operating conditions.

Before shipment, specifications are checked against the approved drawing, including material, dimensions, hardness and cutting-edge geometry. Overseas buyers receive one English-speaking contact from enquiry through delivery.

Uncompromising Quality Control

Hardness, dimensions and edge geometry checked against the approved specification before shipment.

Hardness Testing Process

1. Hardness Testing

Each production batch is checked against the target Rockwell hardness for the selected material and application, helping balance wear resistance and toughness.

Precision Grinding Process

2. Precision Grinding

Dimensional inspection verifies thickness, hole spacing, parallelism and bevel geometry against the approved drawing for a reliable machine fit.

Secure Packaging Process

3. Secure Packaging

Anti-rust oil coating and vacuum sealing protect every blade. Shipped in reinforced plywood crates to withstand international transit and prevent edge damage.

Technical Guides & Insights

Expert advice on blade materials, heat treatment, and maximizing your shredder's lifespan.

Cumberland vs Rapid granulator blades
Jul 16, 2026•6 min read
Compatibility

Cumberland vs. Rapid Granulator Blades: Compatibility Guide

Their knives are not interchangeable. Learn the key differences in rotor style, bolt pattern and bevel, and how to order the right drop-in replacement.

Read Full Guide
How to measure a granulator blade
Jun 19, 2026•5 min read
Sizing Guide

How to Measure a Granulator Blade for a Correct Replacement

The 5 dimensions that decide whether your new blade drops in or sits in a drawer: length, width, thickness, bolt pattern and bevel.

Read Full Guide
Controlled heat treatment process for industrial blades
May 21, 2026•4 min read
Manufacturing

Beyond the Steel: The Secret to Longer-Lasting Blades

Learn why steel grade alone is not enough, and how controlled heat treatment influences hardness, toughness and service life.

Read Full Guide
D2 vs Tungsten Carbide Blades
Apr 24, 2026•5 min read
Material Guide

D2 vs. Tungsten Carbide: How to Choose the Right Blade

Compare D2 and carbide options by feed material, contamination level, impact load and target service life.

Read Full Guide
View All Technical Guides

Frequently 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?

Click the Request Fast Quote button. After receiving complete specifications, we aim to provide a quote and material recommendation within 24 hours.

  • 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:

  1. Correct Gap Setting: Follow the machine manufacturer’s recommended rotor-stator clearance. The correct gap depends on the machine, blade geometry and feed material.
  2. 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.
Read our full guide on Industrial Blade Materials →