A A shredder and a crusher are both used for size reduction, but they serve different purposes and process materials in different ways.
Plastic Shredder
Uses low-speed, high-torque rotating shafts to tear and cut materials.
Suitable for bulky, large, thick, or difficult-to-handle materials such as plastic pallets, drums, pipes, purgings, and large plastic lumps.
Produces relatively large and irregular pieces, typically 30–100 mm.
Offers high resistance to foreign objects and impact loads.
Plastic Crusher
Uses high-speed rotating blades to cut materials into smaller and more uniform flakes.
Suitable for pre-sized materials, injection molding scrap, bottles, profiles, films, and shredded plastics.
Produces smaller particles, typically 8–30 mm depending on the screen size.
Provides higher throughput and more consistent output size.
Which machine should I choose?
If your material is large, thick, bulky, or difficult to feed directly into a crusher, a shredder is usually recommended as the first stage.
If your material is already manageable in size and you need uniform flakes for washing, conveying, or pelletizing, a crusher is often the better choice.
For many recycling applications, a shredder and crusher are used together, with the shredder performing primary size reduction and the crusher providing secondary granulation. 

A Please provide:
Material type
Material size
Required capacity
Desired output size
Our engineers will recommend the most suitable model for your application.

A The output size depends on the screen mesh size and material characteristics. Typical output sizes range from 10 mm to 50 mm for crushers and 30 mm to 100 mm for shredders.

A Yes. Both the shredder and crusher are equipped with motor overload protection and electrical safety devices to protect the machine from damage.

A For routine maintenance and to reduce unexpected downtime, we recommend keeping the following spare parts in stock:
Rotor knives
Fixed knives
Screens
V-belts
For customers operating the machine continuously or in demanding environments, we recommend maintaining a complete set of knives and screens for quick replacement.
A recommended spare parts list can be provided with the machine quotation.

A Blade sharpening intervals depend on the material being processed, contamination level, operating hours, and blade material. There is no fixed interval for all applications.
Regular inspection is recommended. If you notice:

Reduced throughput
Increased power consumption
Poor particle size consistency
Excessive dust generation
 
The blades may need sharpening.
 
Proper maintenance and timely sharpening help maintain optimal crushing performance and extend blade service life.
 

A Blade replacement time varies depending on the machine model, number of blades, maintenance conditions, and operator experience.
 
Our machines are designed for easy maintenance, allowing quick access to the cutting chamber and wear parts. Detailed blade replacement procedures are provided in the operation manual, and technical support is available when needed.

A The operating noise level varies depending on the machine model, processed material, feeding method, blade condition, and installation environment. Actual noise levels can differ significantly between applications.
 
If noise control is important for your project, please contact us for machine-specific information and available noise-reduction options.

A Yes. We can customize the machine based on your specific material, capacity requirements, output size, and plant layout.
Whether you need a standalone crusher or shredder, or a complete recycling line, our engineering team can provide a tailored solution to meet your production needs.
To recommend the most suitable machine, please provide:
Material type
Material size
Required capacity (kg/h or t/h)
Desired output size
Power supply requirements
We will propose the optimal configuration for your application.