ZERMA Machinery Thailand Europe GmbH, ZMT Europe for short, is responsible for the sale of ZERMA slow speed granulators in Germany and Europe. Our head office is in Egestorf, near Hamburg. Since our founding a year ago, we have already sold numerous side-by-side mills in Europe.

The offered slow speed granulators are primarily used in plastics processing companies. The extensive program of slow speed granulators of the GSL series covers a large number of applications and tasks.

Thanks to extensive stocks, all machines are available quickly. In addition, we offer spare and wear parts to ensure that the side mills are always ready for use.

Our service also includes training and commissioning. In addition, we offer support with the routine maintenance of the slow speed granulators, such as changing knives. In addition, there is the possibility of carrying out tests with customer material either on site or in our technical center.

At ZMT Europe, the focus is on offering high-quality slow speed granulators and comprehensive customer service. We remain at your disposal for any further information or to discuss specific requirements.


With more than 70 years of experience ZERMA is one of the leading producers of high quality size reduction technology, covering the whole spectrum of size reduction starting with the GSL series.

The slow speed granulators of the GSL series are designed to recycle rejects and scrap in injection and blow molding applications. Various hopper and discharge designs allow a flexible and customised implementation of the machines.

GSL 180 Mainly used in injection and blow molding processes as beside the press machines to grind runners and sprues
GSL 300 Can be used as low noise central granulators for small throughput requirements as well

Our beside-the-press granulators

Slow Speed Granulators, Recycling Technic, ZERMA Thailand Machinery Europe

The slow-speed granulators of the GSL series operate at a low rotor rpm ensuring a minimal noise level and the highest quality virtually dust free regrind. The specially designed rotor knives can be resharpened several times and due to their unique design do not require any adjustment when installing in the granulator after sharpening. The material to be processed is introduced into the machine via a light-weight sound dampening hopper built in sandwich construction. The screen mounted at the bottom of the cutting chamber regulates the final size of the granulated material.

The regrind is collected in a stainless steel bin, which can be emptied with normal vacuum systems.

  • Specially designed rotor knives simplify maintenance and reduce downtime
  • Tool-less access to the machine for maintenance and cleaning
  • Low noise emission due to slow speed and sound dampening hopper
  • Modular design allows for customisation

All machines are designed according to latest statutory safety standards to avoid operation while the cutting chamber is accessible.

Easy maintenance and cleaning

Access to the cutting chamber and screen is quick and easy without the need for tools. Seals and high precision manufacturing ensure a clean machine environment.

Unique knife design simplifies maintenance

The rotor is equipped with specially designed knives. The curvature of the knives ensures a constant cutting gap even after sharpening without the need to readjust the rotor knives.

Sturdy rotor

The rotor shaft is supported on both ends by heavy duty bearings. Due to the modular design of the rotor the shaft is sized for the widest machine ensuring performance and longevity across the whole range. The staggered design of the rotor means that a maximum of 2 blades cut at any one time thus reducing the stress on the rotor.

Sound dampening hopper

All GSL granulators are equipped with lightweight sound dampening hoppers featuring sandwich construction of a thick layer of sound dampening material between the inner stainless steel and external aluminium. The standard hoppers allow feeding by hand or robot.

Quick-Snap system

The proven ZERMA quick-snap system allows a quick and easy opening of the machine and removal of the front plate to gain access to the screen. This allows simple cleaning when changing colour or material. Safety switches avoid starting of the machine when the cutting chamber or rotor are exposed.

Sound proofing

Optionally the GSL granulators can be equipped with complete sound proofing cabin and doors to further reduce the operational noise.

GSL 180 Series

Slow Speed Granulators, Recycling Technic, ZERMA Thailand Machinery Europe Slow Speed Granulators, Recycling Technic, ZERMA Thailand Machinery Europe
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The slow speed granulators of the GSL180 series feature a closed 180 mm diameter rotor with width range options from 120 mm to 430 mm. The rotors are comprised of single discs arranged on an oversized drive shaft connected to the gear motor. This allows for efficient and low maintenance power transmission. The material can be fed manually, by conveyor or by robot into the large sound dampening hopper. Typically the machines are placed on a low frame with integrated heavy duty casters. Discharge of the material is accomplished via vacuum system from the integrated stainless steel material collection bin.


The slow speed granulators in the GSL180 series are specifically designed for the processing of runners, sprues and rejects in injection molding processes. The safe, easy access to the cutting chamber allows for quick changeovers in case of material or colour changes. The low rotor speed allows processing of pliable as well as rigid materials and ensures high quality regrind with low dust.

Details and options
of the GSL series

Screen of the GSL series

Screen of the GSL series
GSL series rotor

GSL series rotor



rotor knives

The GSL rotor knives
GSL as a compact unit

GSL as a compact unit
Easy accessibility

Easy accessibility

GSL 300 Series

Slow Speed Granulators, Recycling Technic, ZERMA Thailand Machinery Europe Slow Speed Granulators, Recycling Technic, ZERMA Thailand Machinery Europe
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The slow speed granulators in the 300 series feature a 300 mm diameter rotor with widths ranging from 400 mm - 800 mm. The rotor is directly driven by a geared motor. This ensures smooth operation even when processing challenging materials. The low rotor speed generates less noise and a high quality, low dust regrind. The specifically designed rotor knives can be sharpened multiple times and can be installed in the machine without readjustment of the cutting system.

The Quick-Snap system and large knobs allow fast and easy access to the cutting chamber without the need for tools. The material is introduced into the machine via a sound dampening hopper. The machines can be customised depending on the application with different hoppers and discharge options.


The slow speed GSL300 series are well suited for the processing of production scrap as well as voluminous parts. They can also be used as central granulator for low volume production or in laboratory environments. The sturdy construction and high torque of the GSL300 series allows processing of heavier, thick walled and other challenging materials.

ZERMA Messestand K 2022


Granulators suitable for blow moulding waste

In a comprehensive redesign, the best features from the proven GST series have been integrated, with particular emphasis on weight, size, handling, and energy efficiency.

Check out our latest video about the GST series:

All machine types of the GSL series available from stock!!

Discover our selection of side-by-side granulators for the plastics industry and order conveniently online. The following portals are available:
and of course in our web shop

Top Offer

We also offer all machines in hire purchase for 48 months. Of course including full service.
Ask us about this top offer, we will be happy to advise you!


ZMT Europe
ZERMA Machinery Thailand Europe GmbH

Buchenring 8 - 10
21272 Egestorf (Germany)
Phone: +49 4175 3739969

We are looking forward to helping you with your application or question.