Power consumption
The power consumed by the construction mixer (see "Device") during operation.
High power provides the device with high performance — such a model can easily cope with complex tasks, such as mixing a large volume of mixture at a time or while working with heavy fillers, such as crushed stone. On the other hand, high power affects the power consumption of the device, its weight, dimensions and cost. It makes little sense to purchase a powerful model if you select a tool for domestic use from time to time.
Rotation speed
The rotation speed of the nozzle or mixing container provided by a plaster mixers.
High rotation speed devices work best with paints, varnishes and glues.
Low rotation speed models do a good job of preparing thick mixtures. Many modern plaster mixers and mixer-drills support the ability to adjust the speed (see "Features"), which allows user to choose the most optimal mode for a particular mixture. Powerful tools especially need a rotation under heavy load support system.
Max. mixing paddle diameter
The vast majority of attachments for construction mixers have a standard size in length, usually 600 mm. But their diameter may differ, its maximum size is limited by the manufacturer, which must be considered when choosing. The indicator depends on the technical characteristics of the tool. The most popular sizes are
120mm,
140mm and
160mm nozzles. The larger the diameter of the auger, the easier it can cope with a large volume of mixed mixture.
Number of spindles
Usually, the vast majority of construction mixers are equipped with only one spindle, which allows you to install only one nozzle. But besides this, models are also widely represented on the market, the design of which provides the presence of
two spindles, which in fact allows you to almost double the volume of simultaneously mixed liquid. Usually, the spindles turn in opposite directions, mutually compensating for the high torque that falls on the hands of the operator in the case of a single spindle.
Spindle internal thread
The type of internal thread of the spindle determines the possibility of using one or another nozzle with the tool. Also pay attention to the "Type of cartridge" (see below). Most construction mixers today have a metric thread on the spindle for attaching nozzles:
M12,
M14,
M18,
M20,
M24, but there are also spindles with
⅝” inch internal threads.
Chuck type
The chuck type determines the mechanism by which the attachment is attached to the construction mixer and by which the energy of the tool is transferred to the work area. Nozzles with different types of fastening are not interchangeable.
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Key. One of the simplest and most reliable solutions, well suited for tough jobs. The nozzle is fixed in the cartridge using a special key, and after work it is removed with the same key that is included in the package. Even if you fill the junction with glue, the nozzle is still easy to remove with a wrench and improvised tools. But this process can become problematic if you lose the key. Due to the great popularity of this mechanism, the user can use nozzles from different manufacturers.
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Quick release. Models of this type use the FastFix (QuickFix) quick-clamping clamp, due to which the drill is fastened without the use of additional tools. This allows you to quickly change the tooling without much effort, the user does not need to resort to the help of any improvised tools, hand effort is enough. A simple and convenient solution, but some experts consider it not the best option for heavy work.
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Morse taper and key. The attachment of the nozzle of these tools has a special tapered shank that is inserted into the tapered hole of the spindle. The main advantage is high centering accuracy. Most often used in
...mixer drills, but not very popular.Functions
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Soft start. This function allows you to avoid a sharp start of the engine at the beginning of work, which, on the one hand, allows you to avoid overloads on the power supply network, and on the other hand, splashing of building mixtures.
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Speed controller. The ability to adjust the speed of rotation of the nozzle of the working tool will be very useful for working with mixtures of different consistency. As you know, for effective mixing of liquid materials, a high speed is required, and for viscous materials, a lower speed, but a higher torque.
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Maintain momentum. With the help of special sensors, the speed control system monitors changes in load and, depending on this, increases or decreases the speed of the nozzle, thus maintaining the speed set by the user, regardless of the load. This ensures more efficient and better mixing and extends the life of the device.
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Power button lock. Locking the power button when the tool is off allows you to avoid accidental start in abnormal mode, which increases the safety of the device. And vice versa: locking when the tool is on eliminates the need to constantly keep your finger on the power button, which is very convenient, especially during long work.
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Electronic engine protection. The system provides automatic shut
...down of the engine in case of overheating, jamming of the nozzle, or simply in case of a critical increase in load, which helps to avoid tool failure and extend its service life.
— Brushless motor. The presence of a brushless (brushless) motor in an electric tool. Such motors are noticeably superior to traditional collector motors in terms of efficiency, which can significantly reduce energy consumption without sacrificing power; this is especially important for cordless tools (see "Power Source"), where this feature is predominantly found. In addition, brushless motors are quieter and produce virtually no sparks during operation, making them perfect for working in high fire hazard environments. Their main disadvantages are traditional — the complexity of the design and high price.Weight
This refers to the weight of a fully assembled and ready-to-use construction mixer or drill mixer. What you need to pay attention to here is that the
small weight of the device is not always its advantage. On the one hand, during operation, the tool has to be kept on weight, most often in a vertical position, which is very tiring. But on the other hand, heavy models are less susceptible to vibration, it is easier to fix them in one position.
