Maz 5549 dump truck: technical characteristics, load capacity

• June 6, 2019

The need for building materials increases every year; everyone needs sand, crushed stone, and soil.
And the goods must be delivered in the required volume and on time. But not everyone knows how much material a machine can deliver, how much will it fit?

To do this, first of all, you need to know the carrying capacity of the car; this data is indicated in the documents for the car. Extended sides can be a plus; sometimes they do this to increase capacity.

How to measure body volume

You can use a simple tape measure to measure the car body in length, width and height. Multiply the numbers together and we get the cubic capacity of the body. For example, 1.5 * 1.6 * 5 m = 12 cubic meters of loose crushed stone.

In the case of transportation of fine fractions, with an increase in the moisture content of the material, the volume of delivered products may decrease.

Dump trucks are ideal for transporting bulk construction materials. When using them, manual hard labor is not required to unload the machine, everything happens automatically. Dump trucks have increased maneuverability and are not afraid of weather conditions. Having a high carrying capacity, they transport a large volume of cargo in one trip.

When buying sand, crushed stone, soil, it is important to understand the required quantity and choose the right dump truck. It is not economically profitable to transport a small quantity by a heavy-duty vehicle; the cost of transportation will be significant. Sellers don’t care, they need to sell, but the buyer should know this fact, these are his funds.

Maz 5551

The year 1988 was marked by the release of the 5551st model of the Belarusian automobile industry. Among the body features of the new product, the body lift that opens/closes with the tailgate immediately stands out.

Worker 5551

You can also highlight the underbody of the car, which is heated in winter by gases exhausted from the truck’s power plant.

The Maz 5551 cabin is made in a 2-seater version, tilts forward, as on all classic Mazs.

The traditional scope of use of the Maz truck is the construction sector and agriculture, although recently there has been a transition of the vehicle to other industries. In particular, we are talking about municipal agriculture, industrial facilities, business areas, and so on.

The popularity of the truck is growing, its role and importance is increasing every time, people are interested in the spaciousness of the body and the technical capabilities of the vehicle. What caused such a rush for the truck?

First of all, of course, the possibility of use in both winter and summer. As they say, this is a truck for any weather, it can handle both fire and water.

Dimensions Maz

The ability to overcome any roads is also important. Like a thoroughbred SUV, Maz clicks all the bumps, potholes and holes like seeds.

The truck is also good in terms of maneuverability, it is not inferior to foreign analogues in handling and maneuverability, and is superior in terms of fuel consumption and sensitivity to it.

So, let's take a closer look at the Maz 5551. It is this one that is wildly popular today far beyond the borders of Belarus. The capabilities of this dump truck are simply enormous, because it can transport large loads over short and long distances. 5551 is in first place in terms of cost justification among all dump trucks, and this is not saying loudly.

Another distinctive feature that causes the envy of competitors is the ability of the Maz 5551 to turn around on narrow roads, almost like a “car”.

The exterior of the new Maz meets all modern style parameters, the design does not cause negative criticism, and the very design of the truck makes it convenient to use.

Interestingly, for the convenience of the driver, the manufacturers replaced the spring drive mechanism with a hydraulic one. This also had a positive effect on the safety of the car, on which, for the same purpose, the opening of the radiator grille was made more difficult.

Comfortable cabin

The 2-person cabin, despite the expected crampedness, is quite comfortable. The seats are separated by a convenient shelf on which you can easily store all sorts of small items.

The Maz cabin is made so well that any of its elements can be replaced if there is a defect yourself, by purchasing what you need in any store in the country.

The driver's seat is equipped with springs, but according to the comments of the owners and users of the Maz 5551, it is made extremely poorly.

The passenger seat is motionless, tightly fixed to the body. Due to the lack of shock absorption at the fastening points, the passenger can sit quite comfortably.

Now the most delicious part – the body. It is a CLM with the ability to unload backwards. But in terms of functionality, it is inferior to many modern machines equipped with special systems that provide the ability to unload on three sides.

But the Maz 5551 is equipped with an automatic heating system, invented with great ingenuity. As a result, it is convenient to operate the machine even in winter. Even in the most severe frosts, nothing under the body freezes.

The brake system of a Belarusian truck is very primitive. There is also a drawback, which is already obvious - it takes a long time to pump the system, which forces the driver to press the pedal several times.

Fuel consumption is 28-33.7 liters. This is a good figure, considered low in comparison.

Sand

There are many types of sand, they all have different bulk densities, on average the figures are from 1200 to 1700 kg/m3, the average figure for calculations is 1600. Thus, to transport 10 tons of sand, you will need a body of 12 cubic meters.

The density indicator should always be taken as an average; it always depends on various factors:

• fraction size;
• presence of impurities, purity of the material;
• humidity;
• extraction method.

It is humidity that often plays a key role, depending on weather conditions.

Often, a vehicle with a known load capacity cannot actually transport sand due to the significant increase in weight.

Examples:

The prescribed carrying capacity of a certain machine is 10 tons, volume 6 m3. The density of transported sand is 1600 kg/m3. 6 * 1600 = 9.6 tons, the weight that a car can carry.

In the case of an increase in the density of sand, theoretically 1800 kg/m3, with a full body of sand, 6 m3 * 1800 kg/m3 = 10.8 tons, an unacceptable overload of the machine is immediately visible.

Average figures show that a car with a carrying capacity of 10 tons will deliver sand from 5 to 8.5 m3, the exact weight depends on the bulk density (1200 - 1800 kg/m3).

➡️10 tons divided by 1200 = 8.33m3

➡️ divide 10 tons by 1800 = 5.55 m3

If the delivery of sand was ordered by a 17-ton KAMAZ, it is capable of delivering an average density of material of 1600 kg/m3 to only 10.6 m3 (17 tons divided by 1600 kg/m3 = 10.6 m3).

You can order sand with delivery throughout Moscow and the region at a low price from our company MSK-Region.

Operational capabilities of Maz 5551

Crushed stone

Buying building crushed stone is also an important step in the construction process; it is advisable to buy the right amount.

For accurate calculations of quantities, it is also necessary to take into account several main factors - the carrying capacity of the vehicle, the bulk density of crushed stone, humidity, fraction.

Let's show with examples.

A dump truck with a declared load capacity of 15 tons can be loaded with:

• granite crushed stone with a density of 1470 kg/m3 - 10.2 cubic meters (15 tons divided by 1470);
• crushed stone with a density of 1300 kg/m3 - 10 cubic meters (15 divided by 1300 = 11.5 m3), here we see an overload of 1.5 tons.

Size of sand grains, their effect on total weight

The weight of sand in one cube depends on the size of the grains of sand. Taking into account the size of the grains of sand, it is possible to determine the weight of the sand contained in one cube, which is closest to the real figures. For this, a sieve is used, in which the size of the cells allows grains of sand to pass through the sieve without obstacles, but at the same time they are also filtered from debris in the form of stones and sticks.

Based on the size of sand grains, they are divided into two classes:

• I – the size of sand grains in diameter does not exceed 1.5 mm.
• II – the size of sand grains is not limited by size.

To the question - how many cubes of sand are in 1 ton? we answer like this: 0.65 cubic meters.

How much does a cube of crushed stone weigh?

By reducing the fraction of crushed stone, its bulk density and humidity increase, and accordingly the weight of crushed stone increases, which leads to a decrease in the loaded volume.

A dump truck with a known load capacity of 7.7 tons and a body volume of 6m3 can transport:

• only 5.2 cubic meters of crushed granite (7.7 divided by 1470 = 5.2 m3);
• crushed stone with a density of 1300 kg/m3 is almost 6 tons (7.7 divided by 1300 = 5.9 m3).

A large dump truck, such as Kamaz or Ural, with a body of 20 m3 and a carrying capacity of 25 tons, will transport:

• crushed stone with a density of 1470 kg/m3 - 17 cubic meters (25 divided by 1470 = 17 m3);
• crushed stone with a density of 1300 - 19 cubic meters (25 divided by 1300 = 19.2 m3).

Technical characteristics of Maz 5551

Transportation of soil

Soil is also an important material, not always a construction material, for site planning. It is often purchased to improve the health of the tired top layer of soil, to increase fertility, greenhouses, greenhouses. There are many types of soil, the most popular among the population is black soil.

How much does one cube of earth weigh?

To buy the correct cubic capacity of land, you need to know the carrying capacity of the car, soil moisture, and the weight of one cube of land.

Construction goods and land are usually delivered by Kamaz trucks, which are modern, reliable, and spacious. The density of the soil at average values ​​is approximately the same, therefore, it is generally accepted that the average dump truck will deliver 7 - 8 cubic meters of soil. If you fill it with a slide, 1 - 2 m3 of earth will be added, but it is desirable that there are extended sides.

Operating requirements

Trucks are unpretentious equipment.

However, there is a set of rules, if followed, the semi-trailer will serve you for years:

• One of the main ones is that the weight of the transported cargo should not exceed that indicated in the technical specifications. Otherwise, the load on the truck will increase. This can have a negative impact on the axle.
• Do not forget that the center of gravity of the load should be located in the middle of the body.
• A trailer with TEBSE can only be used in conjunction with tractors that have a five- or seven-pin ABS socket.
• The described semi-trailer models are designed for operation in temperate climates. This means that the air temperature should be no less than minus 45 and no more than 45 degrees Celsius. Humidity in this case should not exceed eighty percent.
• The trailer must be coupled to the tractor on a hard, level surface.
• If you leave the car on a slope, do not forget to install wheel chocks under the wheels.
• The body should be unloaded on level ground. The longitudinal slope should not exceed 4 degrees. If you notice the slightest sign of trailer instability, stop unloading.
• In the back you can transport bulk products and even construction materials. But remember that transporting clay is strictly prohibited by the manufacturer.