In today’s post we will talk about concrete mixers, which as we all know are very used machines in construction, which are present in virtually all the works and reforms.
They are machines used for the manufacture of concrete, which prevent us from having to manually knead the elements that make up the concrete (cement, aggregates and water).
There are many types of concrete mixers on the market, which is why users often have doubts when purchasing them. Therefore, in this post we will try to give the keys to the correct choice, in order to clarify to the user the possible doubts that you have about which is the ideal concrete mixer for your case.
The choice of the right concrete mixer
Next we will discuss the 6 most important variables that come into play when buying a concrete mixer:
- Volume of the tank (liters)
- Mobility (Removable, foldable or fixed)
- Engine (Electric or fuel)
- Transmission (Corona or direct)
- Quality (DIY or professional)
1. Volume of the tank or drum of the concrete mixer
The volume of the tank or drum of the concrete mixer is surely the most important factor to take into account, since the concrete mixer that we select must be adequate to our need. A poor selection in the volume of work will not allow us to work optimally.
The choice of the volume of our concrete mixer will depend on the volume of work and the amount of concrete we need to obtain in each mix.
We will not require the same amount of concrete for a large construction site with several workers to go for a small patch in a house or for DIY.
As we already know, concrete must be used before it dries, so we will have to study what volume of tank is most optimal for us.
The volumes of the tank of the most common concrete mixers tend to be approximately between 80 and 350 liters.
It must also be borne in mind that the capacity of the tank will always be greater than the total volume of concrete obtained.
2. Mobility of the concrete mixer
Another important decision factor is the mobility of the concrete mixer, since according to the use that we are going to give it, it will have a greater or lesser importance.
All concrete mixers are portable in different degrees, which is why we will classify them according to the ease of transport and assembly.
According to the mobility of concrete mixers, we can classify them into:
Removable concrete mixers:
The removable concrete mixers are usually DIY concrete mixers for domestic use. Its parts are joined by screws that can be disassembled whenever you want, thus facilitating its transport and storage.
There are also some removable professional concrete mixers, which are concrete mixers specially designed for renovations, in order to facilitate their transport in small jobs where mobility of the concrete mixer is important.
Folding concrete mixers:
The concrete mixers are concrete mixers that their legs or frame are folded to occupy less space and thus facilitate the tasks of transport and storage.
Fixed concrete mixers:
Fixed concrete mixers are welded concrete mixers, which can not be disassembled or folded. These occupy more space and therefore have greater difficulty of transport, but are also the most robust and durable.
They are the most used by professional users, especially in construction and works.
3. Power of the concrete mixer
The power of the motor of our concrete mixer is also an important factor, since a greater number of cavallos greater work force will have the concrete mixer, thus offering a greater mixing power.
However, it is not the only factor to be taken into account, since the transmission system and other mechanisms of the concrete mixer are also very important, since with a great power it may not be enough or it may be lower than another less powerful concrete mixer but higher quality in its mechanisms of transmission of rotation.
4. Electric, petrol or diesel mixer?
The choice of the motor of our concrete mixer is also an important decision factor.
We can find them electric, petrol and diesel; and the selection among them will depend on the needs of the work.
If there is a power outlet, electric mixers are almost always used, since they are cheaper and weigh less.
On the other hand, if there is no power outlet we will have to resort to a fuel or an electric generator to generate electricity. Normally, this last option is used more, since fuel mixers are more expensive and weigh more.
5. The transmission of the rotation in the concrete mixer
There are two models of concrete mixers according to their transmission:
- Corona transmission
- Direct transmission.
The concrete mixers of corona transmission the engine transmits the movement to the tank by means of the reducer, the pinion and the crown.
On the other hand, in concrete mixers with direct transmission the movement of the tank comes directly from the engine, with the help of the reducer and in some cases belts or pinions, which is why they tend to be much quieter.
6. The quality of the concrete mixer, a very important factor
As you will have seen in the market we can find many models of concrete mixers of all brands and prices.
All these models can be classified into two large groups according to the quality of the machine:
Cheap DIY concrete mixers
They are models of concrete mixers that are designed for occasional use in small DIY works or domestic uses.
These are simple and light, offering normally little robustness and work capacity.
Normally the DIY concrete mixers are very economical but of little known brands, a fact that surely can take us problems when it comes to getting replacements when they have a breakdown.
Therefore, your purchase is interesting when we are going to give a very sporadic use to the concrete mixer, and bearing in mind that it is possible that once it takes us problems it is possible that there is no possible repair.
We say this because there are many cases of this type that we have encountered throughout our trajectory of concrete mixers bought in large shopping centers, which do not offer any kind of guarantee.
The professional concrete mixers
The professional concrete mixers are machines designed for continuous work on site, being thus prepared to withstand the entire working day at maximum performance without problems.
These are heavier because they are more robust due to the higher quality of their materials.
The purchase of a professional concrete mixer guarantees us that it will last for many years, since they offer us a long life with basic maintenance.
We have talked about the extreme cases, but there are intermediate models which we would call semiprofessional concrete mixers, which are not designed for intensive work but will surely fulfill their function very well in users who want to invest in a concrete mixer and who do not require a intensive use.