Standard Plastic Granulator Machines

Our standard heavy-duty plastic granulator machines, sometimes called plastic crushers, are essential machines in the plastic recycling industry. These specially designed granulators are extremely durable and have the unique ability to quickly and efficiently cut various plastic streams into small uniform flakes or regrinds.

As one of our most sold type of plastic recycling machine, these granulators are packaged in many of our complete recycling solutions including our popular PET bottle washing lines, plastic film recycling lines, and more.

WORKING PRINCIPLE

At the core of our plastic granulator machine is an open rotor mounted with heavy-duty knives in either a double-scissor cut or v-shape array based on your requirements. As the rotor is spun at high speeds, the rotor knives come in contact with stationary knives that are mounted within the cutting chamber. The material is continuously cut until they are small enough to pass through a screen filter.

Generally speaking, our filter screens are between 10mm to 100mm but can be customized according to your requirements.

Our standard plastic granulator houses 12 rotor and 3 stationary knives. All knives use only ultra durable D2 (equivalent to SDK11) high-carbon, high-chromium steel which ensures the longest usage times before requiring sharpening. All knives are easily adjustable with hydraulic assisted access to the cutting chamber.

APPLICATIONS

This general purpose plastic granulator can be used in a variety of applications for plastic recycling including but not limited to grinding plastic bottles, films, and a variety of small rigid plastics.

For added convenience, we also offer wet plastic granulator machines that have additional rubber sealing and water inlet hose attached allowing a constant stream of water to be sprayed while the plastic is being cut. This helps clean the plastic scrap while keeping the blades cool during operation.

TECHNICAL SPECIFICATIONS

Model #	Rotor Diameter	Rotor Width	Rotating Speed	Approx. Output	Motor Power
SWHB600	⌀450mm	600mm	400-600 rpm	300 kg/h	37KW
SWHB800	⌀500mm	800mm	400-600 rpm	600 kg/h	45KW
SWHB1000	⌀600mm	1000mm	400-600 rpm	900 kg/h	75KW
SWHB1200	⌀700mm	1200mm	400-600 rpm	1200 kg/h	90KW

PLASTIC GRANULATORS VS SHREDDER MACHINES

Plastic recycling granulators are high-speed machines capable of cutting smaller-sized, thin plastics into flakes and fine regrinds. Due to it’s fast rotation speeds, the operator must be careful not to have hard contaminants such as metals or rocks in the input stream. Metals such as nuts and bolts will easily damage the machine including very easily chipping the cutting blades. To ensure metals are not not present, we suggest adding a magnetic suspension separator above the conveyor system.

Plastic shredder machines while also used in size reduction in plastic recycling are low-speed, more robust machines capable of cutting large pieces of plastic. They are also more forgiving with contaminants. Therefore, plastic shredders are often used to precut large pieces of plastic into smaller sizes suitable for use in plastic granulators. The granulator then further reduces the plastic into flakes or regrinds.

ADDITIONAL IMAGES

WARRANTY

All recycling machines come with a 1 year limited warranty.

INQUIRIES

To get the latest prices and lead times, send us a message using the form below.

Frequently Asked Questions

How does a plastic granulator work?

At the core is an open rotor mounted with heavy-duty knives in a double-scissor cut or V-shape array. Spun at high speed, the rotor knives meet stationary knives in the cutting chamber and continuously cut the material until it is small enough to pass through a screen filter. Standard screens run 10–100 mm and can be customized to your requirements.

What models and capacities are available?

Four standard models are offered: SWHB600 (Φ450 mm rotor, 300 kg/h, 37 kW), SWHB800 (Φ500 mm, 600 kg/h, 45 kW), SWHB1000 (Φ600 mm, 900 kg/h, 75 kW), and SWHB1200 (Φ700 mm, 1200 kg/h, 90 kW), all running 400–600 rpm. CE certification is available, and larger, more powerful models can be built on request.

What materials can the granulator process?

This general-purpose granulator grinds plastic bottles, films, and a variety of small rigid plastics into uniform flakes or regrinds. It suits smaller-sized, thin plastics — hard contaminants like metals or rocks must be removed first, since they can easily chip the cutting blades.

What is the difference between a granulator and a shredder?

Granulators are high-speed machines that cut smaller, thin plastics into flakes and fine regrinds, while shredders are low-speed, more robust machines for large pieces and are more forgiving with contaminants. Shredders often precut bulky material into sizes a granulator can accept, which then reduces it to flakes or regrind.

What blades does it use, and how are they maintained?

The standard granulator houses 12 rotor knives and 3 stationary knives, all in ultra-durable D2 (equivalent to SKD11) high-carbon, high-chromium steel for the longest service before sharpening is needed. All knives are easily adjustable, with hydraulic-assisted access to the cutting chamber for blade changes.

What is a wet plastic granulator?

The wet version adds rubber sealing and a water inlet hose so a constant stream of water sprays the plastic while it is being cut. This helps clean the plastic scrap during size reduction while keeping the blades cool — useful when the feedstock is dirty or when an early wash step is desired.