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NANJING ALAS INTERNATIONAL CO., LTD
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They are key cutting parts for solid waste recycling machines.
Their wear resistance and impact resistance affect: crushing efficiency, output particle uniformity, energy use, machine life and maintenance costs.
Two shafts rotate in opposite directions to mesh, shear and tear materials (better than single-shaft machines).
They can handle hard-to-process materials: metal, plastic, construction waste, household waste.
Choosing the right blades helps improve efficiency and cut costs.
Two independent shafts rotate in opposite directions synchronously.
Claw-type blades are arranged in a spiral, staggered way to form a crushing chamber (prevents slipping and jamming).
Powerful torque provides shear and tear force to turn large materials into small, uniform pieces (works at 5.5–10 rpm: low speed, high torque).
Staggered blades ensure continuous shearing, which is more efficient than single-shear mode.
2-claw, 3-claw, 6-claw, 8-claw, 12-claw (more claws = finer output).
10mm, 20mm, 40mm, 50mm, 75mm (thicker = stronger impact resistance for hard materials).
Structure: blade body + clawed blade + auxiliary blade.
Replace worn parts by loosening/tightening bolts (reduces downtime).
Main shaft: spline/hexagonal structure (matches blade inner hole perfectly).
Balances force, prevents blade cracking and shaft deformation (suitable for high-load continuous work).
Tough, impact-resistant; good for municipal waste, construction waste, and waste with sand/impurities.
Hard, wear-resistant; low cost; good for soft waste (rubber, paper, fibers).
Very wear-resistant and impact-resistant; little heat deformation; good for medium-hard waste (wood, hard plastic, metal scraps, tires); hardness HRC 58–62.
All-around performance; good for multi-scenario use, especially high-load industrial waste processing.
Metals: Aluminum cans, paint cans, car shells, scrap steel, metal scraps.
Synthetic Materials: Plastic films, woven bags, plastic barrels, electronic casings, circuit boards.
Construction/Mixed Waste: Renovation waste, bulky waste, landfill screen rejects (use high-manganese steel).
Organic Materials: Used furniture, branches, garden waste, dewatered kitchen waste.
Special Materials: Whole tires (reinforced blades), industrial mixed waste (customizable).
Long service life: SKD-11/DC53 blades can be reground 4 times; 4 cutting edges (reduces replacement costs).
Stable operation: PLC control + overload reversal; low noise (<85dB), low dust; 24-hour continuous work.
Efficient and energy-saving: Reduces energy consumption by 15%-30% (cuts operating costs).
Regrind regularly: Restore sharpness (high-quality blades can be reground 4 times).
Adjust gaps: Check and adjust blade gaps (prevents poor efficiency and uneven output).
Replace worn parts: Replace chipped/cracked blades (avoids equipment failure).
Check bolts: Tighten blade bolts before/after use (ensures safety).
Match materials: Hard waste (metal, hard plastic) → SKD-11/Cr12MoV; high-impact waste → high-manganese steel; soft waste → 9CrSi.
Choose structure: Modular quick-change + hexagonal shaft (easier maintenance); more claws for fine output, fewer for coarse crushing.
Cost-effective options: Municipal waste → high-manganese steel + variable frequency drive (balances performance and energy saving).
Customize wisely: Provide manufacturer with machine model, shaft diameter, waste type, and desired output size.
Soft (plastic, wood) → 15–25mm; Medium (rubber) → 30–40mm; Hard (metal) → 50–100mm.
Small machine → 15–30mm; Medium → 30–50mm; Large → 50–100mm.
Large/heavy feed → thicker blades; Fine shredding → thinner blades.
H13 → 40–100mm; 9CrSi → 20–50mm; Cr12MoV → 15–40mm.
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.