In order not to get confused when choosing a concrete mixer, you need to take into account some basic requirements and the main pros and cons of various models.
The first criterion for the purchase is the purpose of use – for the construction of what volumes the concrete mixer is being bought. If we are talking about small construction sites of one and two-story houses, then household concrete mixers with a volume of 45 liters (very small) to 150 liters are suitable, if the construction projects are larger, then concrete mixers are needed in the range from 150 to 3000 liters. The choice of the mobility of concrete mixers depends on the same criterion. There are foldable models that can be easily disassembled and transported in the trunk of a small truck..
According to the type of device, concrete mixers are divided into three types: crown, crown-gear and gear. The most popular are crown ones, despite the fact that they often fail due to the ingress of building materials into the transmission systems. The fact is that they can be easily and inexpensively repaired..
If the gear mechanism breaks down, it cannot be repaired, you just need to buy a new one, and this is quite expensive. It should be noted that gearing devices break down much less often, since the gear mechanism is protected from foreign objects. When choosing a crown concrete mixer, you need to pay attention to the material from which the crown itself is made. Metal is much more expensive, but it is more durable than cast iron or polyurethane.
Concrete mixers also differ in the material and method of manufacturing the working part itself – the drum. The service life of the entire concrete mixer also depends on its thickness and strength..
According to the principle of operation, concrete mixers are divided into types of gravitational and forced action. The quality of mixing depends on this principle (with forced mixing, more intensive mixing) and the composition of the batch (hard concrete mixtures are available by gravity)
There is a type of concrete mixer of the so-called urban-type, with reduced noise and limited dust emissions. These qualities become very useful when it comes to construction or repair work carried out inside residential areas..