- The Blades:<\/strong>\u00a0Over time, the constant impact will make the cutting edges dull. Shuliy Group uses high-quality SKD-11 tool steel for our\u00a0crusher blades\u00a0because it handles impact extremely well. However, they will still eventually dull.\u00a0Tip:<\/strong>\u00a0You don’t always need to buy new blades immediately. We highly recommend using a simple blade sharpening machine to regrind the dull edges and use them again.<\/li>
- The Screen:<\/strong>\u00a0The metal mesh screen sitting under the blades controls the final size of your plastic flakes. Because the sharp plastic pieces constantly scrape against it as they try to exit, the holes in the screen will slowly widen and eventually break.<\/li> <\/ul>
2. The Shield: De-labeler Alloy Teeth<\/h3>
Before bottles can be crushed, their tight shrink-wrap labels must be violently scratched off. Inside the de-labeling machine<\/a>, a fast-spinning rotor covered in small metal teeth scrapes against the plastic bottles.<\/p>
Because these teeth are in a constant state of harsh friction, standard steel wears down very quickly. This is a critical PET recycling machine wear parts area. To solve this, Shuliy Group uses Tungsten Carbide for these teeth\u2014a material much harder and more wear-resistant than normal steel. Knowing this is a high-wear area, we typically include 100 extra alloy teeth with our standard quotations so you don’t have to stop production to wait for shipping.<\/p>
![\"PET](\"https:\/\/www.recycle-plant.com\/wp-content\/uploads\/2026\/05\/PET-Recycling-Machine-Wear-Parts.webp\")
PET Recycling Machine Wear Parts<\/figcaption><\/figure> 3. The Scrubber: Friction Washer Screens<\/h3>
After the hot washing tank, the plastic flakes are covered in loose dirt and chemical water. They enter the high-speed friction washer<\/a><\/strong>, which acts like a giant, fast washing machine.<\/p>
Inside, paddles spin at incredibly high speeds, forcing the wet flakes to rub against a cylindrical stainless steel mesh screen. This acts like sandpaper. Over millions of rotations, the friction from the wet plastic combined with the mildly corrosive hot chemical water will wear thin spots into the friction washer screen.<\/p>
The Shuliy Group Strategy: Prepare and Prevent<\/h3>
Waiting for a machine to break before ordering parts is a terrible business strategy. Successful facility managers treat PET recycling machine wear parts like fuel for a car\u2014you must always have some in reserve.<\/p>
- The Screen:<\/strong>\u00a0The metal mesh screen sitting under the blades controls the final size of your plastic flakes. Because the sharp plastic pieces constantly scrape against it as they try to exit, the holes in the screen will slowly widen and eventually break.<\/li> <\/ul>