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Durable DC53 steel square shredder blades for plastic recycling

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Square Shredder Blades

Square shredder blades

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High-Performance Square Shredder Blades: Efficient Recycling Solution

Square shredder blades (also called square rotor knives) are the standard for single-shaft shredders in modern waste management. Their design and material directly affect how much waste you can process and how much profit you make.

Key Role of Single-Shaft Shredder Blades

Core part of single-shaft shredders
Cuts and tears many types of waste: plastic, wood, rubber, cables, light metals, paper fibers, etc.
Made from hard, wear-resistant alloy steel (precision-machined)
Affects the shredder’s speed and the quality of shredded material

Blade Materials: D2 vs. DC53 Alloys

D2 and DC53 are common hard alloys for these blades, used for heavy-duty work. Here’s how they compare:

D2 Alloy

Very wear-resistant (great for rough materials)
Hardness: HRC 58–60
Stable structure; resists friction well
Less tough than DC53 (can chip easily if waste has impurities)
Best for: hard, filled plastics (when chipping is acceptable)

DC53 Alloy

Hard and tough (twice as tough as D2)
Hardness: HRC 62–63 (harder than D2)
Resists chipping and cracking (even with impure waste)
Balances wear resistance and toughness
Best for: mixed waste, PVC, rubber, tires, thick plastic, light metals (heavy-duty work)

Most of the time, DC53 is better than D2. It lasts longer, reduces downtime from blade damage, and works for more types of waste.

Blade Design Features

How It Works

Blades are fixed to a rotating shaft (via a central hole) and work with a stationary blade. The rotating shaft’s force crushes waste efficiently. Easy to maintain, with strong grip and fast cutting.

Size Options

Small (35×35×25mm): Fine cutting for soft waste (plastic film, woven bags). Output size: 20–25mm. For small/medium precision shredders.
Standard (40×40×25mm, 60×60mm): Balances speed and versatility. Handles solid blocks, cartons, plastic bottles, rubber. Output size: 25–40mm. For most regular shredders.
Large (80×80×30mm): Strong and impact-resistant (uses D2/DC53). Handles large, hard waste (wood, tires, thick plastic, metal cans). Output size: 50mm+. Needs high-power equipment.

Mounting Hole Design

Convex or flat holes (fits different shaft holders)
Stable during high-speed rotation and cutting
Some blades have inward-cut edges (improves cutting precision)

Blade Manufacturing Process

Strict steps ensure hardness, precision, and durability:

Blanking & Forging: Cut and shape high-quality alloy blanks to make blades stronger.
Heat Treatment: D2 (HRC 58–60) and DC53 (HRC 62–63) are heated to set hardness and reduce brittleness.
Precision Machining: CNC tools, wire cutting, and grinding ensure sharp edges and perfect fit.
Quality Check: Test hardness, size, and surface to ensure consistency.

Daily Maintenance

Clean waste residue from blades regularly
Check for wear or damage often (extends blade life)

ALAS Square Shredder Blades: Why They’re Better

Top Materials: Use D2, DC53, or tungsten carbide-tipped steel. Vacuum heat treatment keeps edges sharp (even for rough waste like dirty plastic or municipal solid waste).
Four-Way Cutting Edges: Rotate the blade when one edge is dull—four sharp edges mean 4x longer life (less downtime).
Precision CNC Machining: Perfect fit on the shaft; smooth surface reduces friction and heat.

Square shredder blades&Single-shaft shredder blade dimensions

NAME	SIZE	Material
Single-shaft shredder blade size	25x25x20/M12	D2/DC-53
	28x28x23 M12
	30x30x20 M12
	30x30x25 M12
	34x34x20 M12
	35x35x23 M12/M14
	40x40x20 M12
	40x40x23 M12
	40x40x25 M12/M14
	40x40x28 M14
	45x45x30/M16
	46x46x32 M16/M18
	46x46x35 M16/M18
	50x50x30 M16
	60x60x30 M16
	60x60x35 M16/M18
	70x70x42/M20
	70x70x45/M20
	70x70x50/M20
	80x80x35/M24
	80x80x45/M24
	25x25x20/M12
	28x28x23 M12
	30x30x20 M12
	30x30x25 M12
	34x34x20 M12
	35x35x23 M12/M14
	40x40x20 M12
	40x40x23 M12

Single shaft shredder blades

Single shaft shredder knives

D2 shredder blades

single-shaft-shredder-blades-in-wooden-box-01

Global Supply for Square Shredder Blades & Industrial Recycling Knives

We manufacture high-performance Square Shredder Blades, Rotary Knives, and Shredder Inserts using premium tool steels (D2, SKD-11, DC53). Our blades are engineered for waste recycling, plastic processing, and wood shredding, serving clients in over 30 countries:

Americas & Oceania: Square Shredder Blade, Recycling Knives, Shredder Inserts (USA, Canada), Rotary Shredder Tools (Australia), Facas para Triturador Quadradas (Brazil), Cuchillas Cuadradas para Trituradora (Mexico).
Europe: Couteaux de Broyeur Carrés, Lames de Recyclage (France), Lame per Trituratore Quadrate, Coltelli per Riciclo (Italy), Industrial Shredder Blades, Rotary Knives (UK, Switzerland), Vierkante Shredder Messen (Netherlands, Belgium), Noże do Rozdrabniaczy Kwadratowe (Poland), Facas Quadradas para Trituradores (Portugal), Nože do drtičů (Czech Republic), Förstörarknivar (Sweden), Aprítókések (Hungary), Cuțite pentru Tocătoare (Romania), Firkantede Shredder Knive (Denmark), Μαχαίρια Καταστροφέα (Greece).
Middle East & Africa: Kare Parçalayıcı Bıçaklar, Shreder Bıçakları (Turkey), شفرات مفرمة مربعة, سكاكين تدوير (Saudi Arabia, UAE, Egypt), تیغه شریدر مربعی (Iran), סכינים למגרסה (Israel), Industrial Shredder Knives (South Africa).
Asia & Southeast Asia: Square Shredder Blades, Waste Recycling Knives (India, Pakistan), Dao băm nhựa vuông, Lưỡi dao máy nghiền (Vietnam), ใบมีดเครื่องบดขยะ (Thailand), Pisau Mesin Shredder Kotak (Indonesia), Mata Pisau Mesin Shredder (Malaysia).