Cutting Mill SM 50

Many laboratories face these challenges:

Time losses due to complex cleaning and reassembly
Sample losses caused by hidden residues in hard-to-reach areas
Limited flexibility when processing various materials
Risk of contamination that can distort analysis results

RETSCH tackles challenges:

The new SM 50 revolutionizes laboratory workflows and solves multiple problems at the same time. With its innovative design featuring a removable milling chamber, the SM 50 simplifies cleaning, saving up to 30 % process time. At the same time, the unrivaled powerful benchtop cutting mill with a single phase power plug allows up to 100 % sample recovery* and contamination-free sample preparation.

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A single solution for everything

The SM 50 is the world's most powerful benchtop cutting mill with a standard one phase power plug. Its 1.5 kW motor drives a large rotor, delivering impressive high-speed cutting power. The max. speed is 4,000 rpm and can be adjusted to suit various applications.
The EasyInspect hopper operates on a batch-wise feeding system and can process large sample pieces up to 50 mm with ease. The compact powerhouse features an internal cyclone system, ensuring effortless and efficient processing of various materials.
Sieves with apertures from 0.25 mm to 10 mm allow a final fineness of less than 250 µm, depending on the feed material. A two-step grinding process allows fine particles to be produced by first using a large aperture sieve, followed by a finer one. The design supports high throughput with large sieve areas of 48 mm x 120 mm.

Cutting Mill SM 50 Everything in view

World innovation: When opening the machine door, the front of the hopper swings out to the side, providing full visibility inside. The Total Access Concept ensures easy inspection and cleaning of all sample-contacting components.

Cutting Mill SM 50 Stop wasting time

Up to 30 % time savings on cleaning with the Total Access Concept and push-fit components.

The push-fit system allows rotor, sieves, cyclone and milling chamber to be removed without tools.
For the first time, the milling chamber can be removed as well, making complete cleaning easy and significantly reducing machine downtime.
EasyInspect hopper fully opens for inspection and cleaning, ensuring quick cleaning.
No more hard-to-reach pipes or hoses – the SM 50 integrates the cyclone directly into the machine.
Intuitive operation via touch display and push button, allowing effortless speed adjustments.

^{Thanks to the Total Access Concept and removable milling chamber process time is significantly reduced in the SM 50}

Cutting Mill SM 50 Three Options for the cleaning operation

Surface cleaning: full access to mill interior, including hopper, with door open for inspection and cleaning with brush, vacuum or compressed air

Intense Cleaning: Comprehensive external cleaning of all grinding tools, including sieve, rotor, cyclone and grinding chamber, all removable without tools using a push-fit system

Parallel cleaning: If a second grinding set is available, samples can be processed directly one after another, thanks to the push-fit grinding tools, including the push-fit milling chamber.

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Up to 100 % sample recovery* Stop losing material

Compared to milling without cyclone technology, the recovery of sample material is significantly improved. The cyclone technology efficiently transports the sample into the receptacle with no dust release and minimal sample residue left in the mill.
The integrated cyclone eliminates the need for connecting elements such as pipes or hoses and minimizes distances and surface areas.
The batchwise feeding of the hopper concept serves as a flow control gate and optimizes the grinding performance and separation efficiency of the cyclone.

Cutting Mill SM 50 - Stop losing material

^{Cyclone technology, small distances and minimized surface areas optimize the material flow in the mill and enables up to 100 % sample recovery.*}

Cutting Mill SM 50 Stop manual pre-cutting

The compact EasyInspect hopper allows processing of large sample pieces without pre-cutting.

The exceptionally large grinding chamber allows large samples to be fed, as does the hopper design for batch feeding of samples up to 50 mm. The power and technical design of the SM 50 makes it easy to process a wide range of materials, including:

Dense monoliths: Dog biscuits, roots, wood pieces
Tough polymers: Plastic components, rubber compounds, children toys, household items
Hard & brittle components: electronic parts, LN₂ embrittled samples

корм для животных

пластиковые игрушки

roots

Stop contamination

Maximum safety, even with frequent sample material changes

Cleaning on a new level: All grinding tools are easily accessible and can be reliably cleaned of persistent residues. For the first time, the milling chamber can be cleaned separately as well, further preventing cross-contamination from previous milled samples.
The push-fit milling chamber is available in various materials, such as stainless steel for abrasion-resistant grinding or aluminum for standard applications as well as for grinding without heavy-metal contamination, allowing a flexible setup in one mill.

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^{Push-fit milling chamber can be cleaned outside the machine using e.g. water.}

Stop compromising

The SM 50 expertly merges the compactness of benchtop-mills with the high-capacity performance of floor-standing mills. Unlike other benchtop models, it can grind large monolithic samples, thanks to its expansive hopper and chamber volume. Precision. Power. Performance. Nothing less than exceptional results. And there are many more reasons to choose the new SM 50.

1.5 kW drive with variable speed for highly efficient size reduction.
Maximum speed of 4,000 rpm for exceptional cutting performance
Large 130 mm rotor diameter and depth of 48 mm for high impact power and fast sample throughput (comparable to large floor-standing cutting mills).
Superior cutting speed of 27 m/s.
3 double acting cutting bars result in 18 cutting events per round and a specific cutting length of 864 mm per round for superior cutting efficiency.
Optimized design reduces blockages and guarantees smooth operation
Comprehensive and convenient door opening mechanisms with a pivoting handle.

^{Large rotor diameter and high speed leads to exceptional high cutting speed for high cutting power.}

Cutting Mill SM 50 Wide range of accessories for highest flexibility

For the SM 50 a wide range of accessories is available including

Push-fit milling chamber of three different materials for standard applications, abrasive and corrosion-resistant applications, and for grinding without heavy-metal contamination.
The integrated cyclone ensures complete sample recovery.
Gravity chamber for grinding without cyclone, where the receptacle is placed directly underneath the machine so that the material falls in by gravity. Only suitable for applications requiring coarse pre-grinding of non-dusty materials.

Parallel-section rotor and 3-disc rotor designed for processing materials ranging from soft to hard properties.
9 different sieve sizes from 10 mm down to 0.25 mm for standard application or for grinding without heavy-metal contamination.
Collecting systems are available in 0.25 and 0.5 l capacities for glass collection, as well as a 3 l container.

Cutting Mill SM 50 Innovative components at a glance

The SM 50 ensures up to 100 % sample recovery and contamination-free results through advanced engineering with the EasyInspect hopper, integrated cyclone, and push-fit milling chamber.

1 | Push-fit Milling Chamber

The removable push-fit milling chamber, available in various materials, prevents contamination and allows quick setup changes. External cleaning ensures complete residue removal, enhancing contamination-free sample preparation.

2 | EasyInspect Hopper

The EasyInspect hopper enables loading of up to 200 ml sample volume or single samples up to 50 mm. It operates on a batch feed basis and features a flow control gate for optimum grinding performance and cyclone efficiency further providing safety protection against injury. A one-hand plunger system controls sample flow, while a flap guides bulky materials into the milling channel.

3 | Integrated cyclone

The compact, push-fit cyclone is integrated into the machine housing for easy cleaning and minimal sample loss. Designed with just two components (lid and body), it allows quick removal and simple assembly. A GL55 thread enables attachment of 250 / 500 ml glass bottles or a 3 liter receptacle via adapter.

Cutting Mill SM 50 Attention to detail: special features for superior performance

Explore the various clever design elements that contribute to the exceptional performance of the SM 50 Cutting Mill

Rotor Shaft Release: The rotor shaft can be released using a touch display function for easy cleaning or rotor mounting.
Hopper Flap: Assists in pushing fluffy materials into the milling chamber efficiently.
Removable Plunger: The plunger can be detached by loosening just one screw for quick access.
Inspection Opening: Allows inspection and cleaning of channels that connect to the vacuum cleaner.
Touch Display with rotary push button: Provides intuitive control and operation of the machine's functions.
Gravity Chamber: Utilizes gravity to assist in material flow for coarse pre-crushing tasks of non-dusty materials.

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^{Discover the key functions of the SM 50}

Cutting Mill SM 50 Примеры применения

The high cutting performance of the SM 50 makes it ideal for applications in industries such as agriculture, recycling, food and feed, and pharmaceuticals. The shearing and cutting action, the clever design and the wide range of accessories make it possible to grind soft, medium-hard, tough, elastic and fibrous materials.

roots

preforms

feathers

пластиковые игрушки

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Cutting Mill SM 50 Принцип работы

The Cutting Mill SM 50 utilizes cutting and shearing forces to achieve size reduction. Samples are fed in batches through the EasyInspect hopper and transported to the milling chamber using a plunger. Within the chamber, the sample is comminuted between rotor blades and stationary double-acting cutting bars. The 3-disc rotor is equipped with spirally arranged reversible hard metal plates that cut sequentially, while the parallel section rotor delivers a robust cutting action for efficient comminution.

Cyclone technology aids in transferring material from the milling chamber to the receptacle, supported by specific air vents that optimize sample discharge. With a variable speed range from 500 to 4,000 rpm, the SM 50 is easily adaptable to a variety of application requirements.

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Cutting Mill SM 50 Характеристики

Применения	измельчение резанием
Область применения	chemicals / plastics, electronics, environmental / recyling, food / feed, pharma / biotech / medtech, power generation / energy, Сельское хозяйство, стройматериалы
Исходный материал	мягкий, средней твердости, прочный, эластичный, волокнистый
Принцип измельчения	сдвиг, резка
Исходный размер частиц*	50 мм
Конечная тонкость*	0.25 - 10 mm
Скорость при 50 Гц (60 Гц)	500 - 4,000 min-1
Периферийная скорость ротора	4.3 - 27.1 m/s
Диаметр ротора	129,5 мм
Тип ротора	parallel section rotor / 3-disc rotor
Типы воронок	EasyInspect hopper
Материал размольной гарнитуры	нержавеющая сталь, сталь для измельчения без намола тяжелых металлов
Размер сит	trapezoid holes 0.25 / 0.50 / 0.75 / 1.00 mm square holes 2.00 / 4.00 / 6.00 / 8.00 / 10.00 mm
Системы сбора пробы / объемы	collecting glass 0.25 / 0.5 l (not for gravity chamber) and collecting receptacle 3 l
Привод	3-фазный асинхронный двигатель с частотным преобразователем
Мощность привода	1,5 кВт
Электропитание	100 V, 110 V, 120 V, 20 A 200-230 V, 10 A
Тип электросети	1-фазная
Тормоз двигателя	да
Степень защиты	IP 20
Ш х В х Г в закрытом виде	565 x 750 x 530 (with base frame and hopper)
Вес нетто	80кг
Стандарты	CE

*в зависимости от исходного материала, конфигурации и настроек прибора

_{Содержание может быть изменено или исправлено}