Minimal fines generation
Ensures high yield and a cleaner working environment
The unfailingly accurate product size with minimal fines produced by the MMD Sizer, maximises product yield whilst minimising fines and dust creation.
Our patented Sizer technology has been a revelation in the crushing industry, providing a compact, efficient and accurate way to break materials.
We’ve created our Sizers to be different. The MMD Mineral Sizer™ is a modern approach to crushing, producing an accurate well-shaped product, minimal fines and methodically efficient breaking.
Discover moreWhether it is primary, secondary or tertiary crushing, dump fed or metered, our sturdy, versatile Sizers have been expertly designed to handle many different materials and throughput capacities. Not only are Sizers insensitive to soft, wet and sticky material, but they can also process hard, abrasive rock either separately or combined.
Discover moreThe unfailingly accurate product size with minimal fines produced by the MMD Sizer, maximises product yield whilst minimising fines and dust creation.
The Sizer's compact dimensions, facilitates deployment in confined spaces whilst keeping structural support and installation costs low.
Each machine is engineered to not only be reliable but also facilitate simple inspection and maintenance that is safe and fast, maximising productivity.
Sizers can be fully automated to ensure optimal performance, whilst facilitating simple and safe operation remotely.
To ensure the best performance and operation from your Sizer we tailor each and every machine
MMD Sizers installed worldwide
Throughput capacity
Materials processed
MMD Sizers are tailored to each application to provide the best operation and cater to all your requirements.
400mm Overall Height
615mm Height
1870m Width
12 Tonnes Weight
770mm Height
2090mm Width
26 Tonnes Weight
1330mm Height
2400mm Width
40 Tonnes Weight
1590mm Height
3020mm Width
60 Tonnes Weight
1845mm Height
3600mm Width
95 Tonnes Weight
2195mm Height
4250 Width
160 Tonnes Weight
A Sizer uses two slowly rotating, large toothed shafts to apply bending, tensile, and shear forces for controlled size reduction, whereas a double roll crusher primarily uses compressive forces between two small toothed rolls. This allows Sizers to be effective and provide fewer fines on a wide range of materials, from hard and dry to sticky, wet, or friable.
Yes, the MMD Sizer is adapted to process hard and abrasive rocks reliably. Its heavy-duty tooth options and robust, efficient drive train deliver high-capacity, controlled material size reduction while minimising wear, ensuring consistent product size even under the most challenging conditions.
MMD Sizers are available in a wide range of capacities to suit various material types and operational needs. Depending on the model and application, capacities can range from a few hundred tonnes per hour (TPH) to many thousands TPH for large-scale operations. Factors such as the Sizer series, feed size, material characteristics, and required product size all influence the final capacity. Each Sizer is engineered to deliver optimal performance for specific conditions, whether used in underground mining, mineral processing plants, overburden removal or mobile installations.
The MMD Sizer is specifically engineered to process wet, sticky, and difficult materials without clogging. Its low-speed, high-torque shafts and self-cleaning tooth mesh design maintain consistent throughput and controlled product size, even in challenging conditions with high moisture or clay content.
Yes, the MMD Sizer is suitable for use in both surface and underground mining operations, adapting to different mining environments and requirements. Its compact, low-profile design allows installation in confined spaces underground, while its high capacity and reliability make it equally effective in large-scale surface mining and quarrying operations.
A Sizer is a specialised rock breaking machine used in mining and material processing for accurately reducing minerals and ores.
The MMD Sizer can process a wide range of raw materials, from soft and sticky to hard and abrasive. Typical applications include coal, clay, limestone, copper, iron ore, industrial minerals, nickel ore, gold ore, platinum ore and overburden. It controls product size in all three dimensions.
We design complete fixed and mobile sizing stations tailored for your operation
Discover MoreFrom Sizers to complete sizing systems, MMD offer turnkey project support globally.
ServicesWe invest heavily in research and development to ensure your machine delivers the results your project requires
Discover MoreSince MMD invented the Sizer in 1978, it has become a staple product for many industries and processes.
Discover moreGET STARTED
MMD have offices and manufacturing facilities worldwide. Consult with your local MMD office.
Contact usOur online Sizer brochure provides you with the same information as the printed brochures, but are much more environmentally friendly.