Concrete mixer sbr: types, design features and principles of

To speed up and facilitate the implementation of concrete work, as well as to make them better, concrete mixers are now widely used. They differ in the principle of operation, technical data and the type of mechanism. For example, the designation “concrete mixer SBR-260” does not mean anything to an unenlightened customer.

But the professional will immediately determine for what purpose this device is best suited. In order not to resort to the services of consultants, it is worth understanding the categories in a little more detail.

The choice of device, based on its design and scope of work

Selecting the unit, be guided, first of all, by matching the required volumes of the solution and its drum.

Machine size

It is clear that to work with your own hands on a private plot you will not need a large industrial mechanism.

Conversely, a small mixer does not help in the construction of large-scale object.

1. For the construction of a garage, pantry, porch, gazebo, a mixer with a volume of up to 100 liters and a weight of 20 kg is suitable. Such an assistant is useful for repair work, landscaping the site.
2. If you intend to build a bath, a small country house, a swimming pool, purchase a concrete mixer up to 150 liters in volume and 40 kg in weight.
3. The house is more solid, in two floors, with a garage or private infrastructure, will require a considerable amount of concrete mix. Here you need a device with a volume of up to 300 liters and a weight of 50 kg.
4. On construction sites where multi-storey buildings are being erected, workers prefer agitators above 300 liters, weighing from 160 kg..

Note! Pick a concrete mixer also for power. As advised by the manual, to work without interruption for more than 12 hours, an aggregate of more than 1000 W is required. Less than 12 hours you can work on a mixer with a capacity of up to 800 watts.

Differences in working principles and device type

The method of mixing the solution of the apparatus may be different.

There are gravitational and forced types, each of which is optimally suited for a particular type of work.

1. Small models are gravitational, up to 300 liters. The principle of operation is the rotation of the blades, mixing the solution. Auxiliary tool can be called the force of gravity. The mixture, turning over, collapses, helping the drum to rotate.

Such household models as SBR-260 concrete mixer, as well as analogs 170, 150, and 125 can be attributed to this household category. The devices work well also when mixing compound feed, fertilizers and other bulk components.

1. The concrete mixer with the forced principle of work will be required for large-scale works. These are production machines with high power and good performance. Not only the sizes, but also the price of adaptations hardly suits the domestic user.

Geared and coronary units

1. Gear type is considered the most reliable and virtually trouble-free. But the mechanism can not be repaired, which is unacceptable for some owners.
2. Coronary mixers are simply repaired, so they, although they break more often, are quite popular. The machine drum surrounds a plastic, steel or cast-iron crown (gear). Cast iron counterparts are considered the best in this category.

Overview of popular brands

1. Russian concrete mixers SBR-125, 150, 170, 260 belong to the gravity cyclic type. They are optimal for the preparation of mobile solutions, as well as for mixing dry components (feed, seed for planting, fertilizer).

Their drum is equipped with a gear rim, in the presence of a two-wheeled frame with a fixed support, side drive and tilting steering wheel. Equipped with a 220 V and 380 V engine. Mixing time is 1 / 1.5 minutes.

Maximum noise level - up to 80 dB. Good performance at temperatures from +4 to +40? С. Prices range from 13,000 to 17,000 rubles.

1. Concrete mixer 132 SBR, and also similar models belong to an easy, household category. The engine is 220 V, with a capacity of 0.7 kW, a volume of 60 liters and a mass of 55 kg. It is worth the car a little more than 10 000 rubles. For a private developer, this option can be called optimal.
2. Models 150a (16,000 rubles), with a capacity of 220 V and 380 V, will cost a little more expensive. Their capacity is from 80 liters, weight is 72 kg.
3. Among the light category is to highlight the model SBR 125-H, with a drum mounted on the cantilever shaft of the gearbox. The result is a wheelbarrow standing on the crates of the stationary bed. The device is easy to assemble and disassemble and store.
4. The concrete mixer SBR 132a became popular in private construction due to its affordable price (10,600 rubles), light weight (56 kg), compactness (132 l), working volume of 60 liters and engine 220V. Below is a table of the characteristics of this unit.

1. Mixers for concrete of medium category (SBR 320, SBR 430) are more powerful, larger and more productive. Such machines are good on construction sites with no centralized provision of finished material from cement plants.

Note! They are equipped with a manual tilting drive and a fixed angle of inclination of the drum. The weight of the devices is about semitones, unloading is performed using the wheel. Builders note as a disadvantage an increased noise level during work, as well as shortcomings of some nodes.

1. Devices of brands above 500 should be attributed to mobile mini concrete plants.
2. Some models are equipped with an engine on diesel, which increases power and performance. For example, SBR 800 and SBR 1200 with autoload module.

Conclusion

Механические устройства типа смесителей для бетона значительно облегчают строительные и ремонтные работы. Производители предлагают машины для обработки любых объемов материала. Ассортимент предусматривает все категории граждан – от дачника до прораба грандиозной стройки (см.также статью «Бетоносмеситель с самозагрузкой: обзор»).

More about concrete mixers will tell the video in this article.