A Guide to Different Types of Industrial Shredder Blades
Views: 0 Author: ALAS-MT Publish Time: 2026-03-18 Origin: Site
Types of Shredder Blades: Complete Classification & Selection Guide
Industrial shredder blades come in diverse styles for different waste disposal jobs. This guide breaks down three practical classification standards to help users pick suitable blades, especially for dual-shaft shredding equipment. As a professional industrial blade manufacturer, ALAS focuses on optimized blade wear performance and customized rotor solutions, delivering matched blade sets for diverse onsite shredding conditions.
1. Classification by Shaft Configuration & Structural Type
Blade shape and working mode vary by shredder shaft design.
Square block blades with curved concave sides and central threaded holes. They run at high speed and shear materials with fixed bed knives. Four cutting corners are reusable: rotate the blade 90° after wear. Suitable for uniform materials like plastic and wood.
Disc toothed blades installed in staggered meshing arrangement. Driven by low speed and high torque, paired blades rotate oppositely to grab, tear and shred bulk waste. Widely used for industrial waste, scrap metal, waste tires and large-size scraps.
Stationary Bed Knives
Fixed blades matched with rotary blades. Installed on single-shaft and partial dual-shaft shredders to hold materials and assist shearing.
2. Classification by Cutter Tooth Quantity (For Dual/Multi-Shaft Blades Only)
Cutter tooth quantity affects material grabbing force and shredded particle size.
Cutter Tooth Specification
Core Advantages
Applicable Processing Materials
1-Tooth / 2-Tooth
Ultra-high grabbing force for heavy feeding
Primary coarse shredding: oversized bulky waste, thick high-hardness metal
3-Tooth / 5-Tooth / 7-Tooth
Balanced grabbing power & shredding efficiency, universal model
Dense tooth layout, more cutting strokes per rotation
Fine shredding for low-hardness small scraps: rubber, plastic film, e-waste
3. Classification by Blade Material & Application Scenario
Blade grade directly affects abrasion resistance, impact toughness and service lifespan. ALAS adopts standardized material grading to achieve reliable shredder blade wear resistance optimization, and provides professional custom shredder rotor and knife design tailored to clients’ dual-shaft and single-shaft shredder equipment demands.
Blade Material Grade
Material Properties
Applicable Processing Materials
9CrSi Alloy Tool Steel
High hardness, decent wear resistance, low impact toughness
Soft lightweight waste: rubber, textile fiber, paper, plastic wrapping film
Cr12MoV / SKD-11 / D2 Cold Work Die Steel
Balanced wear & impact resistance, mainstream factory-grade material
Timber, waste furniture, hard plastic, municipal domestic waste
H13 / 6CrW2Si High-Impact Steel
Excellent fracture resistance, anti-cracking under heavy impact load
Heavy-duty hard scraps: scrap metal, auto body shell, steel wire tires
Tungsten Carbide Insert / Hardfacing Blade
Extreme abrasion resistance, premium durability, higher production cost
Match machine type: Block reversible blades for single-shaft shredders; toothed disc blades for dual/multi-shaft shredders.
Choose proper tooth count: Fewer teeth = stronger grabbing for coarse shredding; more teeth = finer shredded output.
Select targeted material: 9CrSi for soft scraps; D2/SKD-11 for regular waste; H13 for heavy hard metal; carbide-hardened blades for abrasive materials. ALAS supplies full-series qualified shredder blades covering all above material grades for global recycling plants.
Need a Custom Solution for Your Shredder Equipment?Talk to an ALAS engineer today. We provide free material matching, custom drawings, and wearing analysis based on your unique onsite recycling conditions.
Nanjing Alas International Co., Ltd. is a professional industrial tooling manufacturer focused on shear blades, bending dies, shredder blades, and custom wear parts. We offer full application engineering, material selection, setup guidance, and after-sales support to global customers. Tell us your requirements, and our engineering team will provide professional solutions for blade specification, tool life optimization, and cost-effective production.
