Maximize Uptime with Wear-resistant Double Shaft Shredder Blades
In the heavy-duty recycling industry, blade wear is the biggest problem for productivity. Wear-resistant double shaft shredder blades are key parts that affect your facility’s output and operating costs. High-quality double shaft shredder blades let your machines handle rough materials—from reinforced plastics to light metals—without frequent downtime for blade changes.
Long-Lasting Design: How Wear Resistance Works
What makes double shaft shredder blades durable?
High-quality materials: We make our blades from special alloy steels like D2, H13, or DC53.
Precision heat treatment: These materials go through vacuum heat treatment to get a high HRC rating, while staying tough enough to avoid chipping.
Better metallurgy: This keeps blades sharp for much longer.
How Double Shaft Shredder Blades Work
Key Design Features
Two independent shafts: They rotate in opposite directions at the same speed.
Claw-type blades: Arranged in a spiral, staggered pattern to form a crushing chamber.
Working Steps
Materials are grabbed quickly when entering, preventing slipping or jamming.
The machine’s strong torque makes blades shear and tear materials, turning large, irregular items into small, uniform pieces (works at 5.5–10 rpm, low speed, high torque).
Staggered blades ensure constant shearing, making crushing more efficient than single-shaft models.
Blade Structure: Strength + Easy Maintenance
Claw options: 2-claw, 3-claw, 6-claw, 8-claw, 12-claw. More claws = finer output.
Customizable thickness: 10mm, 20mm, 40mm, 50mm, 75mm. Thicker blades = better impact resistance (for hard materials like thick metals, hard plastics).
Modular quick-change design: Blades have 3 parts (blade body + clawed blade + auxiliary blade). Worn parts can be replaced by loosening/tightening bolts, cutting downtime.
Strong torque transmission: Main shaft uses spline/hexagonal structure. Blades fit the shaft perfectly, distributing force evenly to avoid cracking or deformation (good for high-load, non-stop work).
Blade Materials: Match Your Work Needs
Choose materials based on the waste you process—this avoids extra costs or fast wear. Here are common options:
High Manganese Steel: Tough, impact-resistant. Surface gets harder after use. Good for municipal solid waste, construction waste, and waste with lots of sand/impurities.
Alloy Tool Steel (9CrSi): Hard, wear-resistant. Low cost, mature production. Good for soft waste (rubber, paper, fibers).
Cold Work Tool Steel (Cr12MoV, SKD-11): Very wear-resistant, impact-resistant. Minimal deformation after heat treatment. Good for medium-to-hard materials (wood, hard plastics, metal scraps, electronic waste, tires). Hardness reaches HRC 58–62; longer life than regular materials.
Hot Work Tool Steel H13: All-around performance (wear + impact resistance). Good for general use, especially high-load industrial waste processing.
What Materials Can the Blades Process?
Metals: Aluminum cans, paint cans, car shells, scrap steel, aluminum alloy products, metal scraps.
Synthetic Materials: PE/PP films, woven bags, plastic barrels, PE pipes, electronic casings, circuit boards, refrigerator shells.
Construction/Mixed Waste: Renovation waste, bulky waste, aged waste. High-manganese steel blades handle sand/impurities well.
Organic Materials: Used furniture, branches, garden waste, pre-dewatered kitchen waste.
Special Industrial Materials: Whole tires (reinforced blades), industrial mixed waste (customizable for high-load use).
Key Blade Performance
Long wear life: SKD-11/DC53 blades can be reground 4 times, with 4 usable edges each. Cuts replacement costs.
Stable operation: PLC automatic control + overload reversal; sealed bearings + high-manganese steel liners. Low noise (<85dB), low dust, works 24/7 without trouble.
Efficient and energy-saving: Blade design + variable frequency drive cut energy use by 15–30%, lowering operating costs.
Blade Maintenance Tips
Regrind regularly: When blades wear, regrind them to restore sharpness (high-quality blades can be reground 4 times).
Adjust gaps: Check and adjust blade gaps (and blade-liner gaps) to keep crushing efficient and output uniform.
Replace worn parts: If blades chip, crack, or can’t be reground, replace them immediately to avoid equipment failure.
Check bolts daily: Tighten blade bolts before/after use to prevent loosening and ensure safety.
How to Choose the Right Blades
Match materials: Hard materials (metals, hard plastics, tires) → SKD-11/Cr12MoV; high-impact/impurity materials (construction/municipal waste) → high-manganese steel; soft materials → 9CrSi.
Choose structure: Prioritize modular quick-change + hexagonal main shaft (easy maintenance); 8/12 claws for fine output; 2/3 claws for coarse crushing; thicker blades for hard materials.
Cost-effective options: For municipal waste projects, use high-manganese steel blades + variable frequency drive (balances impact resistance, wear resistance, and energy savings).
Customize correctly: Give the manufacturer your equipment model, shaft diameter, installation size, waste type (hardness/impurities/moisture), and desired output size.