Excavator loader caterpillar 428f

The Cat 336 crawler excavator is a powerful and versatile special construction equipment. It is used for work in construction and industrial enterprises. Great digging depth allows you to effectively excavate and develop quarries, create pits and trenches. High technical characteristics make it possible to cope with the implementation of loading and unloading operations.

Its main advantages include ease of operation, reliability, large carrying capacity, economical fuel consumption, ease of service work, and a comfortable cabin. This has a positive effect on improving the efficiency and productivity of work.

Photo Cat 336E L

Navigation

• Features and Benefits
• Engine
• Device
• Chassis
• Hydraulic system
• Operator's cabin
• Control system
• Arrows and sticks
• Ease of operation and maintenance
• Attachment
• Cost of new and used
• Analogues

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Features and Benefits

Machine features include:

• the ability to install a variety of working equipment, including hydraulic;
• three types of boom equipment and eight types of handles;
• strength and durability of components;
• high speed of service work, ease of access to the main units and mechanisms;
• diagnostics of the state in automatic mode using electronics, data output to the monitor in the cabin;
• spacious and ergonomic cabin with convenient controls;
• reliability and ease of control due to the installation of a modern hydraulic system;
• optional installation of a quick change system for equipment.

Specifications and dimensions

The main technical characteristics of the Cat 336 DL include:

dimensions

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Backhoe Loader Caterpillar 428F

The main scope of the Caterpillar 428F backhoe loader is the mining industry, also a special machine is used in agriculture, construction and industry. It is a loading and unloading equipment capable of working in confined spaces and with large volumes of work. High productivity is ensured when laying engineering networks - digging trenches and ditches. In addition, the equipment easily copes with the loading, unloading and transportation of bulk materials.

Backhoe Loader Caterpillar 428F

Most often the loader is used for:

• fast loading and unloading operations;
• excavation and embankment devices;
• planning and improvement of territories;
• loading and transporting goods using forks and buckets;
• digging trenches under time pressure;
• moving large amounts of soil.

The Caterpillar 428 is characterized by functionality, high performance, productivity, maneuverability and durability. Comfortable operating conditions are provided for operators.

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Features and Benefits

To ensure the maneuverability of the loader, the installation of wheels of different diameters on the front and rear axles is provided. The advantages of the model include:

• great functionality;
• universality;
• ease of maintenance;
• high efficiency;
• the ability to adjust fuel consumption;
• increased viewing angle.

The manufacturer positions the Cat 428 as a fast machine with a top speed of 40 km/h. This makes it possible to independently reach the work site. A trawl is provided for transportation over long distances.

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Modifications

When developing the technique, the experience of previous modeling was taken into account, changes and modern developments were made. The result was a modification of the standard equipment - the Cat 428F2 model, which differs in the power of the hydraulic system and the design of the cab. The characteristic features of the new loader include some operating parameters and equipment.

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Specifications and dimensions

The technical characteristics of the Cat 428F include:

Machine dimensions:

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Fuel consumption

The improved fuel tank is designed for 160 liters of diesel fuel, which guarantees non-stop operation throughout the shift. Cat 428 fuel consumption is 7.6-9.5 l/h at low load, and 12.4-16.5 l/h at heavy duty.

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Engine

The model is equipped with a power plant of its own production, the power of which is 68.5 kW or 93 horsepower. Model 3054C DIT features 4-stroke operation and is equipped with 4 cylinders with a diameter of 105 mm. The volume of the unit is 4.4 liters, and the shaft speed is 2200 rpm. As an option, the installation of an engine with a power of 73 kW.

The unit is equipped with a direct injection system and a preheater, which guarantees trouble-free operation at temperatures not lower than -26 degrees. To ensure the durability of the power plant, a powerful water pump and gear drive are provided. The exhaust quality complies with EU Stage II requirements.

Features of the Cat 428 motor include:

• air filtration system with dust ejector, which ensures high-quality cleaning;
• One quality filter is provided for fuel purification. This guarantees ease of replacement of the part and high speed of maintenance, but reduces the durability of the engine;
• charging and starting are carried out at a voltage of 12 V;
• to ensure high technical characteristics, a high torque is provided;
• in the manufacture of the cylinder head, alloyed cast iron with high strength indicators is used;
• ease of starting in the cold season due to the installation of a self-priming fuel priming pump;
• the cylinder block is made by casting and equipped with a deep crankcase;
• pistons are made of AlSi alloy, which guarantees high strength and thermal conductivity;
• in the manufacture of intake valves, steel with impurities of silicon and chromium is used as the main material, exhaust valves are coated with stellite;
• The crankshaft is made of steel with the addition of chromium and molybdenum.

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Device

A reverse gearbox is installed on the Caterpillar 428F backhoe loader, which guarantees the ability to shift gears under load. The option is to install a hydraulic transformer with a lock-up clutch, which reduces the time spent on movement and fuel consumption.

The basic assembly includes a system for returning to the dig position. It has a positive effect on reducing cycle times due to the return function when lowering the control handles of the boom equipment.

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Chassis

The excavator is characterized by a 4x4 wheel formula, which is a feature of many loading and unloading machines of the manufacturing company. A distinctive feature of the Caterpillar 428 is the motion smoothness control system, which eliminates the swaying of the machine when driving on uneven surfaces, reduces dynamic impacts when loading and unloading materials.

Engine

The C9 model of its own production is characterized by being a powerful and economical unit that can improve the technical qualities of the machine. ACERT technology increases power by 9% compared to its predecessors.

Through the screen in the cabin, power is controlled, which guarantees optimization with varying complexity of work. Standard mode is designed for simple conditions and fuel economy. The volume of the fuel tank is 620 liters.

The fan speed is also adjustable depending on the rotation of the Caterpillar 336D power plant, the temperature of the fluid in the cooling system and hydraulics.

The motor is mounted on noise-absorbing rubber pads, the top timing case is insulated. Also, the use of an oil pan, multiple injection, a figured crater, and improved gearing have a positive effect on reducing noise.

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Specifications of popular models

Typical representatives of such equipment include models such as 434E, 428F, 444E, 434F, 432E and 428E.

Pictured Caterpillar 428f

Model Specifications

On the video CAT 428F:

Device

The supporting structures are connected by automatic welding, which provides a deeper penetration and increases the strength of the seam. The cruciform frame is made from square tubes to resist heavy bending and torsional loads. The main part of the track rollers has a pentagonal section, it is made of stamped parts by welding. This has a positive effect on increasing the strength characteristics and the duration of trouble-free service.

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Hydraulic system

Carefully crafted hydraulic layout ensures performance. The main pumps, control valves and tank are in block arrangement, which reduces the length of the hydraulic system pipes and connections, and also has a positive effect on pressure loss. The radiator is mounted on a turntable, which allows air to be taken from the operator's side, and the outlet to be located on the opposite side of it. It also has a positive effect on reducing noise in the cabin. Dampers are used to improve this effect, they are mounted in the boom equipment and the stick.

For the use of attachments of high power hydraulic equipment, a standard distributor installation is provided.

The Caterpillar 336 Hydraulic Sensor Control System uses the pumps to their full potential in all operating conditions. This reduces cycle times and increases work efficiency. The same role is played by the energy recovery circuit of the handle and the boom mechanism, which does not allow power to be spent on lowering and retracting the units. In addition, this solution increases efficiency and economy, reduces pressure losses. The total capacity of the hydraulic system is 410 liters.

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Operation of intelligent control systems

Any excavator intelligent excavation control system includes several tilt sensors (accelerometers) and angular acceleration (rotation) sensors that can be installed on the bucket, stick and boom, superstructure body, in the lift and tilt hydraulic cylinders, boom and stick joints. According to their testimony, the system determines the position of the cutting edge of the bucket.

First of all, there are systems of intellectual control of the basic (initial) level - indicating / signaling. The operator enters the required digging depth on the monitor, and the system will indicate during digging how far the cutting edge or bucket teeth are from the set level. When the cutting edge of the bucket while digging approaches the target depth by about 100 mm, the system warns the operator with light signals (for example, in the form of dots) on the monitor in the cab, and an audible signal sounds. The tone of the sound changes as the bucket approaches the set level. However, the accuracy of this work depends on how accurately the operator follows the instructions of the system.

Higher-level control systems can limit bucket movement so that it cannot dig below a set depth, automatically adjust the height of the boom, maintain a constant cutting edge angle that the operator can set so that the bucket penetration force when digging is optimal under given conditions, and the bucket forms the surface line specified in the project with an accuracy of 20 mm. Automation does not allow the bucket to take more soil than necessary. The operator simply controls the movement of the bucket arm with a single joystick and can focus on moving the soil. Depending on specific tasks, control can be 2- or 3-dimensional.

Note that a full-featured 3D intelligent control system for an excavator can cost 3 to 6 times more than an entry-level 2D system, so if a construction company has doubts whether its investment in an intelligent control system can quickly pay off with its small amount of excavation , it can purchase a base-level system. It is powered by a rotating laser signal source and provides basically the same digging guidance to the operator as higher-level systems: warning lights and sounds on a standard monitor in the cab of the excavator when the bucket tip reaches a predetermined depth.

The interface of control programs is being improved. Interactive earthmoving management systems can be difficult to learn and use effectively. Therefore, the developers of such systems for excavators are integrating them into the overall machine control system in order to exclude manual control of excavation and site planning. The operator must be able to operate the machine quickly and intuitively. To this end, the developers abandoned the keys and knobs, the system is controlled through the touch screen. Menus and dialog buttons are large enough even for gloves. It is much easier for the operator to press a finger on the desired function, rather than remembering which keys correspond to which functions.

Operator's cabin

The working space is characterized by a reduced amount of noise, a large area and comfort. The hydraulic system activation lever actuates the working parts, which ensures safety when disengaged. On the right wall there is an air conditioner and controls for additional organs, and on the console there is a motor start switch and a tachometer. The color LCD monitor is located on the right hand, in front of the counter. It has a resolution of 400x234 pixels, tilt adjustment, language selection. It displays information about the state of the machine, there is a clock, an area of ​​\u200b\u200bpointers, events, etc.

The basic assembly of the Caterpillar 336 includes compartments for things, holders for documents, an hour meter, a hook, a place for a cup, a cigarette lighter. Optionally, you can order a seat with air suspension. All types of chairs are adjustable, equipped with armrests and a seat belt. Increased pressure is created in the cabin, which does not allow dust to penetrate inside.

External structures are made of rolled tubular section, which reduces the amplitude of oscillations and steel fatigue. Such a frame is the basis for the installation of the FOPS system. Between it and the cab there are rubber-metal supports. Glasses are installed on the cab structure, which eliminates the use of frames that reduce visibility. The upper part of the windshield is electrically opened. On the ceiling in the cabin is a hatch.

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Control system

Ease of control of the Caterpillar 336 DL by means of a joystick system is ensured by the comfortable position of the operator's hands. Optimized control travel reduces fatigue over long shifts. The console is characterized by the same parameters, all its elements are ergonomically located, you do not need to reach for them. Both consoles have armrests with height adjustment.

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Arrows and sticks

The equipment is designed to maximize efficiency in a variety of tasks. This was the reason for the creation of a whole line of units. Three types of boom equipment and five types of sticks can be combined with each other, increasing the versatility of the machine. Boom mechanisms are characterized by a large cross-sectional area and internal stiffeners, which ensures durability. The handles are made of high strength steel, have a square section with stiffeners and a bottom plate.

Reach Boom

It has an optimized structure to expand the working area of ​​the Caterpillar 336 excavator. Can be used with handles:

1. 15TB1, which is used for large volumes in construction.
2. 8DB, designed to increase the radius and depth of digging when installing a bulk bucket. It is focused on works of high complexity, digging trenches, pits and general construction works.
3. 2DB with a versatile design capable of loading materials into a dump truck with a payload capacity of 11-32t.
4. 9DB, which is designed for the installation of large buckets, digging trenches, pits and general construction work. It is characterized by a significant radius and depth of digging, endurance.

Such equipment can be equipped with DB series buckets, which have a significant capacity, providing an increase in coverage area.

Mass Excavation Boom

Designed to improve Cat 336 ground handling performance, efficiency, performance and heavy load handling. It is equipped with buckets of significant volume and handles of models M2.55TB1 and M2.15TB1.

Working areas of the excavator

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Wheel Loader Excavator Caterpillar

The versatility of earthmoving loading and unloading machines allows them to be used in mining, agriculture, construction and a number of other smaller industries. The Caterpillar excavator loader comes to the rescue in those places where the work of less powerful machines is not profitable or unprofitable. Moving and loading bulk cargo, digging trenches and laying utilities - this is a small part of the work that this technique is capable of.

general description

The Caterpillar loader excavator celebrated its birth in 1985, when the first model manufactured by the American company Caterpillar rolled off the assembly line of the plant. Modern machines are equipped with powerful diesel engines, hydrodynamic transmission and closed center hydraulic systems with additional functions for adjusting when the load changes.

During development, the main aspect was performance. Much attention is paid to such parameters as the length of the boom, the force of the initial lifting moment, the height of the load. All equipment is mobile and can move under its own power at speeds up to 42 km/h.

The reversible gearbox is designed to shift gears under full load, which allows you to change the direction and speed of movement during loading operations. The chassis is made according to the all-wheel drive scheme - this has already become a good tradition. Caterpillar backhoe loaders have been introduced with a smooth ride control system. It is used to compensate for shocks and prevent the machine from swaying when traveling on uneven ground and during loading operations. The braking mechanisms installed on all wheels give greater efficiency to driving performance.

Boom controls provide parallelism, which is important when lifting palletized loads. The bucket-shovel capacity varies from 0.24 to 0.34 cubic meters. The volume of the bucket used for loading is 1.05-1.35 cubic meters. On all equipment, the anti-theft system of the CAT brand is used, which makes it impossible to start the engine in case of unauthorized start.

Differences between CAT models

The given models are arranged in ascending order of their functionality. Each subsequent machine includes the basic functions of the previous one.

• The backhoe loader Cat428, assembled on the basis of a tractor of the same name, is the base model of the line. Thanks to its versatility, optional, multi-purpose attachments, great mobility and all-wheel drive, it is suitable for a variety of tasks;
• The excavator loader Caterpillar 428E is distinguished by the presence of hydraulic distributors in the hydraulic system that distribute the flow of hydraulic fluid. This made it possible to introduce additional adjustments and achieve work commensurate with the applied load. Changes in the shape of the levers contributed to a decrease in the force applied to them by the driver during operation. The refinement of the design made it possible to increase by 10% the force of the initial moment at the separation of the bucket;
• The Caterpillar 428F backhoe loader is designed for operation in conditions of increased complexity, during operation in which the structural elements of the machine are subjected to additional loads. The presence on the Caterpillar 428F of the Accu Grade on-board tracking system allows you to control the depth and angle of inclination of the trench being cut through;
• The Caterpillar 432E model is distinguished by the fact that a tracking system for the simultaneous rotation of all wheels at a certain angle has been introduced into the basic set of equipment. The transmission has the possibility of separate, independent operation of the front and rear wheels. Reduced turning radius, which increased maneuverability and allowed to work on small areas;
• The Caterpillar 434E model is distinguished by an increased wheelbase length and an optimally distributed weight of the units, which helps when working on uneven and slippery areas. The gearbox used the ability to shift gears in manual or automatic mode;
• The backhoe loader Caterpillar 434F has been modified in the exhaust system. When delivered to EU countries that have tightened toxicity parameters as part of the fight for the environment, the Caterpillar 434F began to be equipped with CAT C4.4 turbocharged engines, providing the lowest carbon dioxide emissions into the air;
• Changes to the Caterpillar 442D began with an engine change. It became not so powerful, but more environmentally friendly and received a new T index. The interior of the cab has been reworked: the design has changed, the thickness of the soundproofing material has increased, the location of the control levers has been slightly moved forward. The experimental control system for the hydraulic equipment of the excavator, which was run in on early releases of machines, was included in the basic package;
• The Caterpillar excavator loader 444E has new structural elements that are part of the boom and stick. Improvements have affected the retractable handle, which received an external retractable section. The outer wear plates are now protected from ingress of foreign contaminants, helping to increase their durability. The height of the center of the hinge axes has been increased - this made it possible, when performing loading operations, to raise the bucket even higher. The full angle of rotation of the bucket is 210 degrees. Changes made to the design made it possible to increase the carrying capacity by 15%.

Completeness and additional equipment

The basic equipment of excavator machines includes:

• Multipurpose hydraulic loading bucket;
• Backhoe bucket;
• Telescopic boom with an extendable handle.

Additional equipment available

• Auger drills - well drilling;
• Vibrating plate - soil compaction and slope arrangement;
• Scheduler - laying concrete and asphalt pavements;
• Hydraulic hammer - crushing of solid materials;
• A variety of devices with which you can quickly change attachments.

Summary table of technical characteristics and dimensions

Typical representatives of the Catapiller excavator loader series are the models: 428, 428E, 428F, 432E, 434E, 434F, 442D, 444E, presented in the table.

With four-wheel drive, the Caterpillar loader excavator distinguishes increased comfort among machines in its class. A well-thought-out cabin ventilation system, with installed air conditioning, allows you to work at high ambient temperatures. All-round visibility in the cab, tightly fitted dust and noise insulation, high-quality interior materials and a well-thought-out arrangement of control and management devices - all this enables the operator to work with full dedication.

Ease of operation and maintenance

The linkage pins are larger than previous versions. Front-mounted gears are heavily chrome-plated for corrosion and wear resistance. The pressure element is responsible for increasing the duration of operation, the ability to handle large loads, and ease of operation.

Design features ensure easy access to key service points. For this, access from ground level and a block arrangement of elements are provided. To get to the radiator, you need to open the door on the left side of the turntable. Filters, a cooling system, a tank and a drain cock are also concentrated here. When the filters are clogged, a notification appears on the screen in the cabin.

The Caterpillar 336D's main front end lubrication point is located on the boom mechanism for easy daily maintenance.

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In conclusion

In the development and production of Cat 320 excavators and analogues, Caterpillar Corporation focuses on the convenience and simplicity of service and current maintenance of equipment. This indicator is achieved by placing the main components in quick access, as well as unifying a number of parts. For most modifications, it is possible to replace and repair elements from the ground, without the need to dismantle massive parts. This can be done by one qualified master.

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Attachment

Devices for quick change of working bodies enable the operator to independently re-equip. This has a positive effect on reducing downtime, increasing efficiency and versatility. With the help of such equipment and a large number of attachments, it is possible to reduce the number of cars in the fleet.

Equipment benefits include:

• durability and reduced repair costs;
• reduction of the turning radius;
• wear reduction;
• automatic welding to improve the quality of the seam;
• the ability to install earth-moving equipment K-Series;
• use of high strength steel in places of maximum load.

The Cat 336DL is available with excavator buckets, which are used to work with materials of low density and medium abrasiveness. It can be gravel and clay soils.

Heavy-duty buckets are used where there is a risk of material damage to the end effector. HD equipment is characterized by high performance, easier unloading of cohesive soils and a robust design.

Reinforced buckets are designed for difficult conditions in materials with medium abrasiveness. They increase breakout force and shorten cycle times, but are not used in cohesive soils.

Rock buckets are used with highly abrasive materials - granite, etc. Their features include:

• the presence of protective inserts to improve the quality of loading and equipment durability;
• side plate for protection when working with rocks;
• thick wear plates.

Depending on the installed equipment, the area of ​​operation of the excavator is determined. The most common working bodies include:

• grinders;
• hydraulic shears, hammers;
• buckets SG, SD, XD;
• rippers;
• grabs.

Hammer on Caterpillar 336E LN Hybrid hydraulic excavator

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Caterpillar 434f specifications

The dimensions and weight of Caterpillar are smaller than the dimensions and weight of similar excavators, which does not affect its functionality. When working in urban mode - this is a big plus.

• The digging process is designed for a depth of up to 438 cm.
• Bucket volume index: front 1.15 m3, rear 0.2 m3.
• Unloading takes place at points with a height of up to 2,745 mm.
• The edge of the bucket flies out to an indicator of 923 mm (taking into account the maximum angle).
• The maximum speed limit is 40 km per hour.
• Operational, net weight 9,500 kg.
• A load weighing no more than 4700 kg can be lifted to the maximum height.
• The hinge axis is made with a height at the maximum point of 3518 mm.
• The bucket is raised up to a height of 440 cm.

Engine selection

When purchasing a Caterpillar 434f at a dealership, you can choose from several engine options for this backhoe loader. One of them is more economical, but in terms of technical parameters it is slightly inferior to its opponent:

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Cabin driver Caterpillar 434f

driver's cab

The operator's cabin is made with a full view of the area around the driver. The salon is spacious, the design is made in modern colors. Due to the width of the cab, the driver can easily turn from side to side. On the one hand, it works on a loader, and when it turns 180 degrees, it controls a working shovel. The cabin is placed on the frame using elastic support mechanisms that reduce the vibration of the entire structure. The driver's seat has a built-in air suspension, which reduces the load on the lower back and back of the operator, preventing him from overworking from a long work process. The functional controls are conveniently located relative to the chair. One-piece glass at the back opens, when opened, it allows air to enter the warm season. The rear window has large area wipers to provide the operator with full visibility in the rain or in a column of dust. The windows are lightly tinted.

Fuel consumption

The capacity of the fuel compartment holds 160 liters of diesel fuel for excavator operation. At maximum load, fuel combustion reaches a limit of 9.9 liters per hour.