High-Performance Custom SKD-11 Double Shaft Shredder Blades for Plastic Recycling
Why SKD-11 Blades Are the Gold Standard for Plastic Recycling
Plastic waste is often abrasive and quickly dulls ordinary blades. SKD-11 (Cr12MoV) is a high-carbon, high-chromium alloy steel engineered for long life, sharpness, and wear resistance—even in 24/7 recycling operations.
Superior Material Properties of SKD-11
High wear resistance to resist abrasion from plastics, fillers, and contaminants
Excellent air-hardening characteristics for stable, long-lasting sharpness
Hardness of 58–62 HRC after vacuum heat treatment
Maintains edge far longer than conventional steel blades
Designed for High-Volume Plastic Waste
Handles HDPE, PET, PP/PE films, hard plastics, barrels, pipes, and industrial waste
Delivers consistent output size and reduces downtime
Ideal for heavy-duty, continuous recycling lines
Precision Engineering & Custom Design
Our blades are CNC-ground to micron tolerances for perfect fit, synchronization, and clean shearing in double shaft shredders.
Blade Geometry & Shaft Compatibility
Perfect interlock between two counter-rotating shafts
Prevents material wrapping, jamming, and excess motor torque
Customized to your machine’s exact specs: shaft diameter, spacing, rotation
Customizable Configurations
Claw Options (Cutting Performance)
2-claw / 3-claw: coarse shredding, high impact resistance
6-claw / 8-claw: balanced efficiency and output size
12-claw: fine shredding, higher shear frequency
Thickness & Durability
How Double Shaft Blades Work: Core Principles
Designed for low speed (5.5–10 rpm), high torque tearing & shearing action.
3-Stage Cutting Process
Grip & Feed: Spiral, staggered claw pattern grabs material instantly—no slippage
Shear & Tear: Dual counter-rotating shafts deliver powerful shear/tear force
Consistent Output: Continuous shearing for high efficiency & uniform particle size
Structure & Stability
Meshing chamber design for maximum throughput
Balanced load distribution reduces stress on shafts & motors
Stable operation under heavy, continuous loads
Structure Design: Strength + Easy Maintenance
Modular, service-friendly construction lowers maintenance time & cost.
Modular Quick-Change Blade System
3-part design: blade body + clawed blade + auxiliary blade
Replace only worn parts—no full disassembly
Slashes downtime for blade changes & regrinds
Hexagonal / Spline Shaft Connection
Precision inner hole matches shaft for zero slip
Even torque distribution prevents cracking & deformation
Built for high-load, 24-hour industrial use
Material Selection Guide (All Industrial Grades)
Match blade material to your waste type for best life & cost efficiency.
SKD-11 / Cr12MoV (Cold Work Tool Steel)
Best for: hard plastics, metal scrap, wood, tires, e-waste
Hardness: 58–62 HRC
Top wear resistance & edge retention
High Manganese Steel (ZGMn13)
Best for: construction waste, municipal solid waste, high sand/impurities
High toughness & work-hardening under impact
9CrSi Alloy Steel
Best for: soft waste—rubber, paper, fiber, cardboard
Good hardness & cost-effective performance
H13 Hot Work Tool Steel
Best for: multi-scenario industrial waste, high-load continuous use
All-around performance: wear + impact resistance
Wide Material Applications
Our blades handle nearly all solid waste streams.
Key Recycling Applications
Plastics & Rubber: films, woven bags, barrels, pipes, casings, tires
Metals: aluminum cans, scrap steel, alloys, sheet metal
Construction & Mixed Waste: debris, bulky waste, landfill rejects
Organics: wood, furniture, garden waste, dewatered kitchen waste
Core Performance Benefits
High Stability & Low Noise
<85dB low-noise operation
Six-fold sealed bearings & high-manganese liners
PLC control + overload reversal for safe, trouble-free 24/7 run time
Energy Efficient
Maintenance & Upkeep Best Practices
Regular Maintenance Steps
Blade Regrinding
Gap Adjustment
Parts Replacement
Replace chipped, cracked, or worn-out blades immediately
Prevent equipment damage & higher operating costs
Daily Checks
Buying Guide: Choose the Right Blades
Material Match Recommendations
Hard plastics/metal/tires: SKD-11 / Cr12MoV
Construction/municipal waste: High manganese steel
Soft rubber/paper/fiber: 9CrSi
Structure & Configuration Tips
Prefer modular quick-change + hexagonal shaft for lowest downtime
8/12-claw: fine output; 2/3-claw: coarse, high-impact crushing
Thicker blades for hard, high-impact materials
Custom Order Information
Provide these details for perfect fit:
Equipment model & shaft diameter
Installation dimensions
Material type (hardness, impurities, moisture)
Target output particle size