GUITTARD LAB : Z-arm laboratory kneader and extruder

GUITTARD LAB : Kneader with double Z-arm for laboratory kneading

The GUITTARD LAB Z-arm kneader is an industrial laboratory kneading machine specifically designed for low-volume production. Capable of handling up to 30 litres of material, it offers laboratories the ideal solution for processes involving high-viscosity materials. The Z-shaped arms enable it to cover the entire surface of the tank, ensuring even kneading. The adjustable rotation of the blades breaks up any agglomerates to ensure efficient kneading with no unwanted constituents.

This series of industrial kneaders for laboratories is available in various versions and options: single-screw extruder, explosion-proof construction, vacuum pump, oil or water heating unit and PC-based data acquisition system.

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Technical sheet


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Advantages of the GUITTARD LAB Z-arm kneader

Extended tank coverage

The Z-shaped arm design of this industrial kneaders guarantees optimum tank coverage, ensuring even kneading throughout. Its design reduces dead zones to ensure even distribution of raw materials.

Easy to install

This laboratory kneading equipment stands out for its simple installation, requiring only a power cable for easy integration.

Easy to clean

This industrial kneader for small-scale production is designed to be dismantled quickly, to simplify and save time during cleaning operations in order to ensure continuous operational production.

Flexibility and customisation

Thanks to its modular design, this Z-blade kneaders can be customised to meet the specific needs of each application.

Advanced options

The GUITTARD LAB industrial kneaders offer a host of advanced options, such as a single-screw extruder, explosion-proof construction, a vacuum pump, an oil or water heating unit and a PC-based data acquisition system.

Safety and anti-wear options

This industrial kneading equipment incorporates safety options such as explosion-proof components, blades heated or cooled via internal channels and a variety of materials resistant to wear caused by abrasive products.

Applications of the GUITTARD LAB Z-arm kneader


Nitrogen, phosphorus, potassium, calcium, magnesium…


Copper, gold, aluminium, silver, zinc…


Sealants, bulk technical silica, specialist polymers and resins, radioactive waste, aluminium and Bayer alumina, plastics, carbon and graphite, glues, sealants, adhesives, paints, pigments, inks, colours, toners, lubricants…


Alumina, clay, silica…


Resins, adhesives, solvents, polymers, pigments, plaster…


Polyethylene, polypropylene, polystyrene, additives


Essential oils, waxes, emulsifiers, preservatives, colourings 


Lithium, cobalt, nickel, polymers, electrolytes 


Chocolate, sweets, chewing gum, additives, oils, crystallised fruits 

Description of the GUITTARD LAB Z-arm kneader


The GUITTARD LAB Z-arm kneader is specially designed to meet the requirements of laboratories. Building on the characteristics of the GUITTARD MX series of industrial kneaders, it consists of two blades mounted on parallel shafts, rotating in opposite directions. The curved blades form a trough-shaped kneading chamber, promoting a shearing action as the Z-arm rotates. This action kneads, folds and thoroughly mixes the material.

The blades of the laboratory kneader move in a zigzag pattern, crossing over each other to effectively fold, stretch and knead the material to be mixed. This operation ensures that the agglomerates are completely mixed, dispersed and broken down, guaranteeing the quality of the finished product.

Installing and using the GUITTARD LAB kneader are simple, with a quick dismantling system that makes it easy to clean the machine. In addition, the use of a single power cable simplifies integration and ensures easy installation.

/ Working capacity:  between 0.4 and 30 litres (1 to 8 gallons)
/ Construction : Stainless steel
/ Lid material : treated glass or stainless steel
/ Product discharge :

    • MX LAB : Kneader with tilting hopper
    • MXE LAB : Industrial kneader and extruder with stationary trough and discharge via an extrusion screw

Option :

/ Explosion-proof construction
/ Adjustable blade rotation
/ Additional vacuum pump
/ Additional oil or water heating unit
/ PC-based data acquisition system
/ Extrusion screw to optimise the kneading process by transferring and forming the final product. (enables simplified integration into a continuous process)

Reliability: meets CODAP, ASME and TÜV international standards.

HASLER Group global support service for GUITTARD LAB kneading solutions


To optimise the performance of your kneading equipment, our experts can work with you throughout your project, based on your analysis, to offer you:

  • Tests carried out in our laboratory
  • Tests carried out at your site with equipment hire (with or without assistance, depending on your requirements)

These tests are carried out with complete confidentiality, focusing on innovation around the formulation or process, to assess feasibility, effectiveness and/or dimensional aspects.

Our team of kneading experts can help you with:

/ Our range of services, which encompasses every stage from assembly to the commissioning of your equipment..

/ A global service including maintenance, repair and remote assistance.

/ Conducting audits and tests, evaluating kneading performance and characterising the final product to ensure the optimum efficiency of your kneading solutions.

/ Supplies of spare parts including kneader shafts and arms, feed or extrusion screws, moving parts, gearboxes, shielding, sealing braids and temperature sensors.

/ Our equipment upgrade/reconditioning service with the aim of:

  • Improving the reliability of your kneading systems by addressing equipment wear.
  • Optimising your processes and adjusting them to new constraints.
  • Enhancing the robustness of your knaeading equipment to make it suitable for use in harsh environments, such as compatibility with explosive, saline and corrosive atmospheres.

/ Mechanical retrofit services to replace damaged parts, ensuring the durability of your equipment.

/ Training modules on the use and optimisation of your kneaders.