When performing large-scale excavation work, excavator equipment is widely used. Due to its high productivity and excellent technical characteristics, the EO 33211 excavator produced by Uralvagonzavod is incredibly popular.
With its help, you can easily carry out work with soil of various categories in conditions of high or low temperatures. If necessary, the excavator can be used to work with hard and frozen soils, if they are first loosened.
Technical characteristics of the wheeled excavator EO-33211
This type of special equipment seems to be the most common, as it is widely used when laying communications, digging foundation pits for various buildings, in the process of quarrying and for other needs.
The technical characteristics of the EO 33211 excavator make it a truly universal solution for earthmoving work. When studying them in more detail, it is advisable to mention:
- the operating weight of the excavator is 18 tons;
- equipment dimensions (LxWxH) - 9.55x2.5x3.68 m. When working on folding supports, the width increases to 3.7 m;
- limit pressure values in the hydraulic system - 32MPa;
- maximum force when performing excavation work - 175 kN;
- bucket volume is 0.85-1.05 cubic meters;
- the rotation speed of the working platform is 12 revolutions per minute;
- unit speed is 8-25 km/h.
The EO 33211 A excavator is very popular.
When working with the device, it should be taken into account that its tilt by more than 5 degrees is not allowed. When moving on a dry and hard surface, the unit can overcome unevenness not exceeding 20 degrees.
Main working equipment
Regardless of the modification, excavators from this manufacturer are equipped with two types of working equipment, which are designed to solve the problems that arise for the unit. This includes a backhoe, which is most often used for digging soil below the equipment level.
Backhoe
The main element is a backhoe, which is used in various types of excavation work. Considering the performance characteristics of such an element in more detail, it is necessary to mention the following parameters:
- the nominal volume of the bucket is 0.85 cubic meters;
- the maximum permissible depth when digging is 5.8 m;
- when unloading, the maximum high position of the bucket reaches 6.5 m;
- if work is carried out at the unit level, the digging radius is 9m;
- an excavator equipped with a standard bucket and a 2.25 m long arm will weigh 18 tons.
Thanks to the technical characteristics of the unit and the features of its design, it is possible to carry out work even in conditions of lack of free space or an inclined surface.
Bulldozer
Another standard element that is equipped with all excavators of this brand without exception is a bulldozer. It consists of several components, among which mention is made of the hydraulic cylinder, levers and blade. Levers help ensure a constant cutting angle of the bulldozer, which improves the quality of work performed and its accuracy.
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Optional equipment
In addition to the standard technical equipment used to perform basic work, a number of additional equipment can be installed on the EO-33211 excavator, depending on the customer’s wishes. Its installation will expand the functionality of the unit and make it more suitable for the intended purpose of use.
Among the optional components installed at the buyer’s request, the following elements should be highlighted:
- towing device;
- flashing light;
- ripper.
Each of them has its own characteristics, which are worth studying in more detail.
Excavator bucket
Towing Attachment
If the excavator has a technical malfunction and it cannot continue to move under its own power, for example, in case of problems with the engine, it may need to be skidded. For this purpose, it is equipped with a special device with which the excavator can transport other vehicles or itself be transported in tow. The towing device used in EO-33211 includes 3 main rods.
Flashlight
Special equipment is often equipped with special signals that make it more visible at night in traffic or a construction site. At the buyer's request, the excavator can be equipped with a special flashing light, which is mounted on the roof of the operator's cabin and activated using the control panel.
Ripper
If you plan to use an excavator to dig soil of increased hardness, which it cannot cope with without preparatory work, it is advisable to install a special device on it - a ripper. It allows you to loosen the frozen ground layer by layer, as well as open the road surface if necessary.
The weight of such equipment is 203 kg, which slightly increases the weight of the entire unit. When working, remember that the sweep radius of the ripper is 800mm.
Engine
One of the most important design elements of an excavator is the engine. The EO-33211 uses a four-stroke diesel engine, which reduces fuel costs. It belongs to the V-shaped type, and its identification number is YaMZ-236M2.
Be sure to read: Technical characteristics of the JCB 160 wheeled excavator
Considering its key characteristics, it is advisable to mention:
- power unit power 150 hp;
- rotation speed - 1700 rpm;
- The engine design assumes the presence of 6 cylinders.
The power unit, which is equipped with excavators of this series, has proven itself to be a reliable and easy-to-maintain motor, which, subject to the manufacturer’s recommendations, can operate for a long time without the need for repairs.
Hydraulic system
The hydraulic system of the model consists of many elements responsible for the operation of various components of the unit. They are used by working equipment, pneumatic systems, and are actively used in controlling the unit. The hydraulic system includes:
- 4 main pumps, volumes 112 and 11.6 sq.cm;
- 2 hydraulic motors, both with a volume of 112 cm2. Used to move the unit and turn it;
- hydraulic cylinders. Used by handles, booms, supports, steering elements, etc.;
- 3 spool-type hydraulic devices.
The purity of the working fluid used in the hydraulic system is ensured using several filter elements. The first is of the main type, and the second works in conjunction with an injection pump.
Electrical system
The electrical system implemented in the excavator is simple, as it is of the single-wire type. Its main operating voltage is 24 V. It includes 2 batteries, a starter and a generator, which allows the electrically dependent components of the EO-33211 to work correctly.
Chassis
Studying the chassis of the unit in more detail, it is advisable to note that its design assumes the presence of two drive axles. Using the front unit, the operator controls the unit while performing work. The excavator track is 1.9 m, and the wheelbase is 2.8 m.
The design uses 8 wheels of a dual-chamber type. They are all the same size range 280R-508, and the reference tire pressure varies from 0.79 to 0.84 MPa.
Cabin
The excavator cabin is designed to accommodate the operator. It is made of metal and equipped with 1 door and glazing. Its design allows the worker to have a wide level of visibility, which is especially important when working in conditions of limited space. Thanks to high-quality heat and sound insulation, it is possible to maintain a comfortable temperature.
Excavator 33211
The single-bucket universal pneumatic wheeled excavator EO-33211A has a mass of 18,000 kg. Equipped with a YaMZ-236 engine, capable of reaching speeds of 8-25 km/h. As standard, according to the EO 33211 catalog, it has a bucket with a capacity of 0.85 m3, intended for the development of unfrozen soils of categories I - IV and loosened rocky, frozen soils. The maximum digging depth is 5.8 m and the radius is 9.2 m.
33211 excavator bucket can be replaced with a narrow bucket with a volume of 0.42 m3, and a larger bucket with a volume of 1.05 m3. All work performed is allowed from minus 40°C to plus 40°C.
Features of the excavator
When studying the features that a worker encounters when operating an excavator, it should first of all be noted that the controls for controlling the unit are placed taking into account ergonomic requirements. This allows you to perform all the operations for which this unit is designed without experiencing discomfort.
Be sure to read: Hitachi 330 Excavator
An important element is an automated control system , which allows you to monitor the operating parameters of the product, and if deviations or malfunctions are detected, stop work in a timely manner.
Controls
The interior of the excavator includes all the necessary elements used to control the unit. These include the steering wheel and pedals, the hand brake lever. Most of them are located under the front panel or on it, but some elements are implemented on the console chair in which the operator works.
These are mainly the elements responsible for manipulating the boom, bucket, supports and bulldozer, which allows you to control these units with maximum convenience.
The excavator is maneuverable and easy to control
Wheeled excavator
General technical data of the EO-33211 excavator
- Operating weight 18 t
- Overall dimensions in transport position: length 9.55 m
- width 2.5 m
- height 3.68 m
- in 1st gear - 8 km/h
Main working equipment
Backhoe
The backhoe is designed to perform various excavation work when digging, mainly below the excavator parking level, and consists of a monoblock boom, arm, bucket, levers, rods, hydraulic cylinders, and pipelines.
- Nominal bucket capacity 0.85 m³
- Maximum digging depth 5.8 m
- Maximum unloading height 6.5 m
- Largest digging radius at parking level 9.0 m
- Largest digging radius 9.2 m
- Operating weight of an excavator with a 2.25 m arm and a bucket with a nominal capacity of 0.85 m³ is 18,000 kg
Modifications
For the convenience of the consumer, several modifications of this excavator are produced at once, which allows everyone to choose the optimal solution taking into account individual requirements. First of all, the units are divided into 2 groups: according to the type of climate in which they are intended to operate. The first consists of “Standard” units, which are suitable for operation in conditions from -40 to +40 degrees.
The other consists of “Tropical” type excavators, which are adapted to heat and can operate correctly at temperatures from -20 to +55 degrees, which allows them to be used in southern regions. In addition, there are 2 modifications - EO 33211A and EO 33211K. The first is intended for the development of unfrozen soil, as well as crushed parts of frozen soil, the particles of which are no more than 20 cm.
A similar model with the letter “K” at the end of the identification number is an excavator designed for utility work. It is equipped with welding and pumping units, which allows it to better suit the tasks of public utilities.
Specifications
Technological characteristics of the quarry module EO-33211:
- Chassis system:
- longitudinal frame - 2800 mm;
- track width - 1900 mm;
- ground clearance - 340 mm;
- maximum turning radius - 9200 mm;
- tire pressure - 0.79-0.84 MPa;
- front axle drive - controlled;
- rear axle drive - uncontrolled;
- axial load - 11000 kgf;
- steering drive - hydraulics;
- dosing pump NDM80 - U250-16;
- brake - drum with wedge release;
- brake drive - pneumatic;
- parking brake - permanently closed.
- Electrical equipment:
- voltage - 24 V;
- number of 6ST-190 batteries - 2.
- Hydraulic system:
- pressure of working equipment - 28 MPa;
- travel drive pressure -28 MPa;
- rotary drive pressure - 19 MPa;
- control pressure - 3 MPa;
- steering pressure - 17 MPa.
- Dimensions - 9500x2500x3680 mm.
- The greatest digging depth is 5.8 m.
- The largest digging radius is 9.2 m.
- The maximum unloading height is 6.5 m.
- Cabin height - 3.33 m.
- Platform rotation speed - 12 rpm.
- Travel speed:
- in 1st gear - 8 km/h;
- in 2nd gear - 25 km/h.
Attachment mechanisms for the EO-33211A excavator:
- Standard bucket - 0.85 m³.
- Narrow bucket - 0.42 m³.
- Additional bucket - 1.05 m³.
- Hydraulic hammer - MG-300-01.
- Ripper tooth.
Parameters of pumping equipment model EO-33211K:
- total head - 20000 mm;
- liquid supply - 100 m³/h.
Welding unit parameters:
- current - constant, 250 A;
- voltage - 30 V.
Model specifications
The technical characteristics of the EO 33211 allow the tractor to perform its functions perfectly. The excavator is equipped with a six-cylinder diesel engine YaMZ-236M2 with a maximum net power of 180 horsepower at a rotation speed of 2100 rpm. The maximum torque is achieved at a crankshaft speed of 1250-1450 rpm and is 667 N*m. Engine displacement is 11.15 liters. The cylinders are arranged in a V-shape. Fuel consumption when the engine is running at maximum power is 24.02 liters per hour. The power unit uses a water cooling system.
The gearbox is mechanical, two-stage. The maximum speed is 25 km/h. The brake system is a drum type with a pneumatic drive and a wedge-release device. Applies to all wheels. The tractor has an 8x4 wheel arrangement. Dual-tube wheels and radial tires measuring 10.00R-20 are used. The steering is equipped with a hydraulic drive, which greatly simplifies turning the steering wheel when performing maneuvers. The tractor can work on a slope with a maximum angle of up to 5 degrees, and also overcome slopes along the way at a maximum angle of up to 20 degrees.
Overall dimensions of the excavator: length - 9.55 meters, width - 2.5 meters, height - 3.68 meters, minimum turning radius - 9.2 meters, track - 1.9 meters, wheelbase - 2.8 meters, road clearance - 340 millimeters. Operating weight is 18 tons. The operating cycle duration is 20 seconds. The rotation speed of the turntable is 12 revolutions per minute.
Review of hydraulic excavator EO 3323
For a wide variety of earthworks, namely the development of trenches, pits and quarries, the EO 3323 excavator is perfect, with which you can work with various categories of soil. The use of this equipment is also possible for loading or unloading work of a wide variety of types. In addition to the soil itself, it can be various bulk materials, as well as stones and frozen earthen rocks, the dimensions of which do not exceed 20 by 20 cm.
The standard equipment of the EO 3323 excavator backhoe includes a boom with a special monoblock design. Also a half-cube bucket, which is equipped with a standard (extended) type handle and a bucket attachment with a volume of 0.6 cubic meters in a standard layout. For such a vehicle it is possible to equip it with a bucket, the volume of which is 0.8 cubic meters. Such equipment provides for the performance of working operations with soil layers from the first to the fourth category.
In turn, the straight shovel of the EO 3323 excavator is equipped with a functioning boom with a standard handle and a bucket attachment (0.63 cubic meters), capable of carrying out work processes with a variety of earth layers. To carry out loading and unloading operations, the unit is equipped with a 1.2 cubic bucket element.
The set of equipment for the EO 3323 excavator with a hydraulic hammer includes equipping the vehicle with a backhoe, a boom working mechanism with replaceable tips (plates for compacting earth layers), a power plant, the power source of which is the D-240 diesel engine. Such an engine is designed to allow direct connection of the power element. The hydraulic pump on this special equipment is equipped with a friction clutch, which allows you to start the engine during operation without directly activating it.
Unlike the previous model of the EO 3322 excavator, this machine is more productive, largely due to the larger bucket and the increased force supplied to it. The working pressure is increased and, at the maximum point, reaches 25 MPa.
Also in the family of this equipment is the EO 3323a excavator. In accordance with the rest of the equipment in this model range, the digger has a wide range of functions and can be used both in the city and in open areas. This technique works flawlessly in a wide temperature range, most often found in our region (from -40 to +40 degrees).
The main and auxiliary spare parts for the EO 3323a excavator include:
- 1. Backhoe equipped with a bucket having a working volume of 0.65 cubic meters.
- 2. Special grab
- 3. Hydraulic shears
- 4. Hydraulic hammer
- 5. Equipment for demolishing concrete (concrete grinder)
- 6. Equipment for crushing and loosening soil
Also in the model range of EO 3323 excavators there is an EO 33211 excavator - a full-rotary hydraulic transport. This technique is used mainly in the construction of various buildings and roads. In addition, for the needs of municipal organizations, a special model EO-33211K was developed, which additionally has pumping and welding equipment. The operation of the EO 33211 excavator is carried out through the use of a complex of electrical, pneumatic and hydraulic systems.
