Plastic Crusher Machine Blades FAQ
Q1: What is the best blade material for shredding dirty plastic?
DC53 and SKD11 are the top blade choices for shredding dirty plastic containing sand, dirt and small metal bits. SKD11 offers excellent wear resistance, suited for long continuous working cycles. DC53 has better toughness, so its cutting edges won’t chip even when hitting hard impurities in waste plastic.
Q2: How frequently should shredder blades be rotated or sharpened?
Our square blades come with four cutting edges for extended use. You can rotate the blade to a new sharp edge once you find lower shredding output or excessive dust during operation. As a regular maintenance rule, check blade conditions every 80–120 working hours. Hard plastic materials wear blades faster — glass-filled nylon, for instance, causes more blade wear than LDPE.
Q3: Why does shredded plastic melt and stick to the blades?
Plastic melting and sticking to blades is mostly caused by over-friction or dull blades. Dull blades tear plastic instead of cutting it clean, which generates high heat and melts the material. Improper blade gap is another common cause. Keeping a correct clearance between rotor and fixed blades ensures neat cuts and less heat buildup.
Q4: Are your blades compatible with mainstream European and American shredder brands?
Absolutely. We supply precision-made replacement blades for mainstream European and American shredder brands, including Lindner, Vecoplan, Untha, Zerma and Weima. All blade sizes, bolt holes and countersunk holes follow strict OEM standards for a perfect, hassle-free installation.
Q5: What are the differences between vacuum heat treatment and ordinary hardening?
We use vacuum heat treatment for all our blades, which delivers consistent hardness from the blade surface all the way to the core. Regular ordinary hardening only hardens the blade surface and leaves the core soft, resulting in quick wear and easy breakage. Our vacuum-treated blades maintain a stable hardness of 58–62 HRC, effectively boosting blade durability and service life.
