Why does the Sicoma planetary mixer have a shorter scraper blade tail than some?

The good mixing action of Sicoma’s blades allows faster and more complete cleanout; it simply does not need a wide scraper tail to clean out efficiently. A larger tail causes dead spots in the mixer which increases the mixing time, or reduces homogeneity of the mix. Another manufacturer’s attempt to give fast cleanout is to […]

Why does the Sicoma planetary mixer have 3-armed stars while other top mixers in its class have only two?

Sicoma’s designers have studied the action of both 2-armed and 3-armed stars and concluded that 3 are better. Not only because there are more arms and blades, but because the blades can be positioned to be much more effective. To start with, the arms can sweep the mixing volume more effectively because the more paths […]

Why does Sicoma use Ni-Hard cast-iron liner plates?

Previously the standard liner for Sicoma and many others was 10 mm Hardox steel plate. This is becoming hard to get and expensive. Although Ni-Hard is even more expensive, Sicoma has standardized on this material. Its 500 HB hardness and 15mm thickness give it more wear life than Hardox of the same thickness and lower […]

How many Sicoma planetary mixers are there in operation?

6000 have been manufactured and there are over 5000 in operation worldwide. No other planetary mixer comes even close to these numbers. In 2006, over 200 have been produced; many more than any other manufacturer. These statistics show that the MAO is truly what it claims to be – a great mixer for a great […]

How does a full mixer still mix almost as effectively and fast as a partial batch?

Because in Sicoma mixers, the ARMS do the mixing. They cover from top to bottom and every cubic inch of the mixer volume many times each minute. The angled blades create pressure in front and a void behind, drawing material from the top downward behind each arm and mixing material vertically as well as horizontally, […]

Why does the MAO have heavier end panels and look bulkier than others of the same size?

When mixing a heavy load in a twin-shaft mixer, the tremendous torque of the mixer shafts tend to twist the mixer body – it squirms slightly. 16 years of experience in these mixers has shown that this squirming can twist the shaft seals and bearings out of line, causing excessive wear over time. The extra-stiff […]

Why do we say the gearbox runs cooler?

It’s a fact that the MAO gearbox runs cooler than several others, and as a result does not require an oil cooling unit. This reduces its complexity and increases reliability while reducing its price. We say that this is due to its 2-stage design, but this is a simplification. In fact, it is due to […]

Why do Sicoma mixers not use cleaning rings on their shafts?

Heavy steel cleaning rings are used by many other manufacturers, but Sicoma refuses to add them because of the damage they do to the concrete. Aggregate gradation is affected detrimentally, reducing strength in unpredictable ways. A properly designed paddle, arm and hub is self-cleaned by the intense mixing action – there are no dead spots […]

What is the difference between Filling Capacity, Uncompacted Output and Compacted Output?

When the mixer is filled to its DRY FILLING CAPACITY, as the stone, sand and cement mix, the air spaces between stone chunks get filled with sand, and the air spaces around the sand grains get filled with cement. The density goes from about 100 lb/cu. ft. to 150 as it is mixed. Even the […]

What is the best type of mixer for my application?

Regardless of what people have told you, or what you have read, there is a best mixer for each application. Each excels in a different type of concrete: Twin Shaft – Lots of concrete at high speed, low wear, low maintenance. Designed for rough, tough jobs like dam building and ready-mix. Handles aggregate sizes to […]

Everything is subject to modification without prior notice. For specific requests, we will refer to our technical department. Values indicated are not applicable in all applications and conditions and are subject to variations depending on the use and quantity of the product.