Currently, quite a lot of different special equipment is produced, but those machines that have a wide range of work performed are very popular. This is explained by the unprofitability or non-profitability of classical models. One of the most popular models of universal equipment is the Caterpillar 428 wheeled backhoe loader. The first samples of the Cat 428 were demonstrated back in 1985, and a little later mass production began. Throughout the years of production, the car has undergone a large number of improvements and modifications. The mechanisms were refined, the wishes of the owners were taken into account, the working parts were improved and, of course, the maximum achievable power increased. More modern models have a hydrodynamic transmission, a fairly powerful diesel power unit and a hydraulic system with a closed center and the ability to adjust its performance.
The standard Caterpillar 428 backhoe loader is equipped with a proprietary engine. This power unit, upon reaching a certain speed, is capable of developing a maximum power of 68.5 kilowatts or 93 horsepower. But the car can also be equipped with a 100-horsepower advanced diesel engine.
Absolutely all models of this backhoe loader have four-wheel drive, which in turn gives the machine excellent maneuverability. Maneuverability is also quite high, making the Cat 428 suitable for working in tight spaces. Belongs to the middle traction class of various special vehicles.
Purpose
The Caterpillar 428 backhoe loader is famous not only for its technical characteristics, but also for its versatility. This allows this model to be used in agriculture, mining, small manufacturing, industry, utilities, as well as in the construction of any facilities. Basically, this machine is intended for carrying out laying works of utility lines, digging trenches and pits, moving various bulk materials along the structure, as well as performing loading-type work. In addition, Cat 428 is used to level the working area and create embankments in the required places.
Attachments
This equipment, like many others, has a fairly large number of installed attachments that allow you to carry out all the necessary work. But first, let's look at its basic set:
- Frontal two-jaw bucket. This unit is designed for excavation and loading operations. It is also often used for moving bulk cargo and leveling work areas. Its volume is 1030 cubic millimeters. Weight is 820 kilograms. The width is 2370 millimeters. The depth is 1050 millimeters.
- Rear bucket This type of equipment allows you to dig ditches and trenches. Its volume is only 240 cubic millimeters. There are several versions that differ from each other in the number of teeth and volume. Installed to the handle of the hydraulic manipulator.
- Rear hydraulic manipulator. This unit consists of three key elements: a boom, a handle and hydraulic cylinders. Allows you to use a variety of attachments. Installed at the rear of the excavator.
- Hydraulic supports. They are necessary when doing heavy earthmoving work, as they provide the machine with increased stability. Located on the sides.
Also, the Cat 428 backhoe loader is capable of using other additional units in the work process:
- Snow removal equipment (special front blade). There are several varieties of this device, namely this:
Model EX-2100. The weight of this model is 410 kilograms. The width is 2100 millimeters. The height is 800 millimeters. The maximum rotation angle is plus/minus 30 degrees.
Model EX-2400. When fully assembled, this model weighs 450 kilograms. The width of such a blade is 2400 millimeters. The height is exactly the same as the previous model - 800 millimeters. The maximum rotation angle is plus/minus 30 degrees.
Model EX-2600. The weight of this blade is 490 kilograms. The width is 2600 millimeters and the height is also 800 millimeters. The maximum rotation angle is plus/minus 30 degrees.
Model EX-2700. It is the widest and heaviest version of the snow plow. The weight of the assembled equipment is 530 kilograms. The blade was expanded to 2700 millimeters. The height and maximum rotation angle values remain unchanged.
- Municipal brush units. Designed for clearing road areas from various contaminants. There are also several models for the backhoe loader:
Model Holmes SU. This unit has a special bunker. The width of such equipment is 1600 cubic millimeters. The diameter of the brush is 600 millimeters. The height is 800 millimeters. There is a water tank with a capacity of 190 liters. When fully assembled, this unit weighs 900 kilograms.
Model Holms 300. Is a more efficient cleaning equipment. The weight of this model is 1395 kilograms. The width of the unit is 2400 millimeters, while the height is 1300 millimeters. There is a brush with a diameter of 700 millimeters. The capacity of the water tank is 400 liters.
Model Holmes SL. Unlike previous units, this model does not have a hopper. Equipped with a 400 liter water tank. The width of such equipment is 2200 millimeters. The diameter of the brush is 700 millimeters. The maximum rotation angle is plus/minus 30 degrees. The mass of the model is 945 kilograms.
Model Holmes Compact. It is a sweeping brush without a water tank. Overall width is 1200 millimeters. Without fastening, the height is 1200 millimeters. The weight of the ready-to-use equipment is 175 kilograms. Installed to the handle of the hydraulic manipulator.
- Hydraulic breaker. This type of equipment allows you to perform dismantling work of concrete structures, but is also often used to loosen hard soil. Installed to the handle of the hydraulic manipulator.
- Drilling equipment. This mounted unit is designed for drilling not too hard soil, rocks, and also wells. Frequent use of this equipment is observed in mining industries. Installed to the handle of the hydraulic manipulator.
Using Caterpillar 428E backhoe loaders
Backhoe loaders CAT 428 E are actively used for excavation and loading work in construction, public utilities and agriculture. Standard universal attachments in the form of:
- Excavator-type backhoe;
- Bucket lever system;
- Quick connection devices for other types of equipment allow you to effectively use the CAT 428 for:
- Demolition and dismantling of buildings;
- Repairing the road surface and installing a new road surface;
- Digging trenches for laying hot and cold water supply networks, power supply networks;
- Towing heavy loads;
- Construction of dams and dams in agriculture and forestry;
- Loading and unloading operations.
Cat 428e
With an attachment in the form of a hydraulic wheel with pile, the Caterpillar 428 does an excellent job of sweeping streets, the hydraulic wheel in combination with a snow blade serves to clear sidewalks and roads from snow during the cold season. The mounted hydraulic hammer perfectly crushes asphalt and concrete road surfaces. attachments are also available :
- Vibrating plate for soil compaction;
- Auger drills for installing poles and piles;
- Planner for laying asphalt and concrete road surfaces.
Modifications
The Caterpillar 428 backhoe loader, as stated earlier, has undergone a large number of various changes and technical improvements. As a result of this, several models were created, which are just modified versions. The following models are available: Cat 428E, Cat 428F, Cat 428E2 and Cat 428F2. All these machines differ from each other in some additional equipment and technical characteristics. The appearance of the excavator remains basic.
Specifications
The weight of the backhoe loader ready for operation is 8720 kilograms. The length of the entire structure is 5810 millimeters. The width is 2352 millimeters. The cabin height is 3717 millimeters. The longitudinal base of the car, also known as the wheelbase, is exactly 2200 millimeters. Ground clearance is 320 millimeters. The distance between the rear wheels is 1714 millimeters. The distance between the front wheels is 1895 millimeters.
The maximum achievable digging depth is 5775 millimeters. The standard rear excavator bucket has a volume of 240 cubic millimeters. The volume of the front bucket is 1030 cubic millimeters. The cutting edge has a width of 2406 millimeters. The maximum achievable unloading height is 2823 millimeters. The Cat 428 hydraulic system can support a maximum weight of 3318 kilograms.
This model is equipped with a four-cylinder diesel power unit brand 3054C DIT, which, upon reaching certain crankshaft speeds, is capable of developing a maximum power of 68.5 kilowatts or 93 horsepower. Some models are equipped with the same engine, but with some technical modifications, as a result of which the maximum power has increased to 73 kilowatts or 100 horsepower. At low loads, the engine consumes from 7.6 liters to 9.5 liters of fuel per hour of operation, while when operating at high loads, the consumption ranges from 12.4 liters to 16.5 liters of diesel fuel.
Advantages and disadvantages of Caterpillar 428 E
The main advantage of the Cat 428 E is good performance and maneuverability combined with ease of operation. The unique positive features of CAT 428 include:
- Large turning angle and "track to track" and "crab" movement. The ability to move sideways offers many advantages in tight spaces and when parking;
- Powerful hydraulics enhance the bucket's thrust, significantly increasing productivity; The curved boom speeds up and increases the reach during loading and unloading; The ability to easily move on slippery and inclined surfaces by activating the all-wheel drive mode by braking;
- The AccuGrade system provides control of trench depth and slope;
- The satellite-based Product Link system tracks all machine movements.
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The disadvantages include steering control of only the front wheels in the basic configuration, which can be compensated by the additional installation of a steering control system for all wheels, as well as:
- Demanding on diesel quality;
- Insufficient ground clearance of the frame;
- Short-lived wheel mudguards.
According to reviews from numerous owners, the CAT 428 E has proven itself to be excellent, and despite the appearance of a new modification, the Cat 428 F, with enhanced hydraulics, a more comfortable cabin and, most importantly, lower fuel consumption, is still in good demand both in the supply segment of new equipment and and the used segment.
Caterpillar 428e
Peculiarities
The Caterpillar 428 backhoe loader is equipped with a reversible gearbox, which makes it possible to change gears under fairly high loads. Thanks to this, the speed and direction of the machine can be changed during the work process. There is a special modern system that controls the smooth running of the excavator. This helps prevent the machine from rocking and compensates for sharp shocks that often occur when loading or when moving various materials on uneven surfaces.
The cabin of this equipment contains everything necessary for comfortable work, namely, an air conditioner is installed, which can heat the incoming air into the cabin to a certain temperature (this is relevant during winter operation), and there is also an improved ventilation system. The cabin uses high-quality finishing and sound-proofing materials. It is worth noting that the noise level in the cabin during operation is quite low. The cab's glass area is large, which provides the operator with excellent all-round visibility from the workplace. Instruments and controls of the equipment are located in a convenient order, which allows you to carry out precise work without being distracted by searching for them and without performing unnecessary actions. The attachment control levers have an improved shape, which reduces the force applied to them. This makes the operator's work easier.
In order for the excavator to be able to dig trenches and ditches with high precision, it was equipped with a special system called AccuGrade. It controls the angle of inclination and digging depth. When purchasing new equipment, the following options can be included in the package at the buyer’s request:
- Vibrating plate used in slope construction and soil compaction.
- Hydraulic breaker, used both for dismantling purposes and for loosening hard soil.
- Auger-type drilling units used in the process of drilling various wells.
- Leveling units used in laying concrete and asphalt pavements.
The design has a large hood that provides almost complete access to the engine and outboard equipment. Well, also, an important feature of the Cat 428 backhoe loader is its simple further maintenance and ease of repair.
Backhoe loader Cat 428 E and its parameters
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The Cat 428 E Backhoe Loader features a hinged cooling unit, an easy-to-open hood, easy-to-adjust leg wear pads and a telescoping arm. This reduces machine downtime and provides operator comfort. Brakes Caterpillar 428 - Fully sealed, hydraulic, multi-disc. Internal oil-spring, hydraulically driven Kevlar discs mounted on the final drive input shaft.
The parking brake and auxiliary brakes are independent of the service brake system. The parking brake is engaged mechanically using a lever located on the right console. Power brakes are standard on Caterpillar 428 backhoe loaders. When driving in two-wheel drive, braking activates four-wheel drive. When the brakes are released, the transmission switches back to two-wheel drive mode.
This principle ensures that the system operates effectively when driving on uneven or slippery surfaces, as well as when driving downhill. Braking modes are controlled by the all-wheel drive switch. This ensures effective braking and reduces tire wear. The Cat 428 Backhoe Loader has a long wheelbase for optimal weight balance and handling, especially when driving on road. At the same time, the turning radius of the machine remains unchanged. Cat-428 Engine - Three-ring pistons are constructed from aluminum-silicon alloy for strength and maximum thermal conductivity. Forged chrome-molybdenum steel crankshaft with nitro-carburized journals. The front and rear crankshaft oil seals are Viton lip seals with an integrated dust lip.
High-temperature silicon-chromium steel intake valves and Stellite-coated exhaust valves ensure long engine life. The cylinder block is a one-piece casting made of high-strength cast iron. The cylinder block design has an increased bottom height and is highly durable and has a long service life. Cat 428E backhoe loaders are equipped with Cat 3054C turbocharged engines or Cat C4.4 turbocharged aftercooled engines to meet specifications. EU Emissions Directive 2004/26/EC, Stage IIIA. The ability to select rated power allows you to select equipment that meets customer needs. All Caterpillar 428 backhoe loader engines are highly reliable, 4-cylinder, 4-stroke direct injection diesel engines equipped with standard glow plugs for easy starting in cold conditions. This ensures reliable engine starting at temperatures down to -18 °C.
All engines are equipped with a highly reliable gear water pump and a durable serpentine drive belt, the tension of which is automatically adjusted. This reduces operating costs. Caterpillar 428 Transmissions - Selecting between manual and automatic shift modes helps the operator quickly determine the correct gear for a given situation. Cat 428 Backhoe Loader Standard 4WD - Heavy duty rear axle with self-adjusting inboard brakes, locking differential and final drives. All-wheel drive is engaged using the switch on the front console panel or using the brake pedal when using all-wheel braking.
All-wheel drive can be engaged while the vehicle is moving, under load, in any forward or reverse gear. To facilitate maintenance, the all-wheel drive system is equipped with external final drives. The Caterpillar 428 4WD front axle is swing-mounted and sealed and lubricated for life, eliminating the need for daily maintenance. In addition, the bridge is equipped with a double-acting hydraulic steering cylinder, which provides a steering angle of 52° and increased maneuverability of the machine. Backhoe Controls—The Caterpillar 428 Backhoe Loader can utilize one of the following control schemes: backhoe, backhoe, or universal control scheme. Thus, this model is suitable for any operator. Caterpillar 428 Backhoe Loader Specifications Engine - Cat 3054C Power Rating (standard) - 2200 rpm Gross Power - 68.5 kW / 93 hp Net power - 65 kW / 89 hp. Net power - 80/1269/EEC - 65 kW / 89 hp. Increase in net torque at 1400 rpm 68.5 kW / 93 hp. - 33% 74.5 kW / 101 hp - 26% Maximum torque at 1400 rpm 68.5 kW / 93 hp — 395 N.m 74.5 kW/101 hp — 408 N.m Cylinder Bore — 105 mm Stroke — 127 mm Cat 428 Backhoe Loader Bucket Dimensions and Performance (Utility/Multipurpose/Multipurpose with Forks) Capacity , m3 — 1.0 / 1.03 / 1.03 Width, mm — 2406 Load capacity at maximum height, kg — 3322 / 3069 / 2899 Breakout force, kN — 55 / 61 / 60 Tipping load at the point of load application to the bucket, kg — 5664 / 5655 / 5504 Maximum height of the hinge axis, mm — 3340 Unloading angle at maximum lift height — 45 Unloading height at maximum angle, mm — 2634 / 2668 / 2668 Reach of the bucket edge at maximum angle, mm — 795 / 724 / 724 Maximum angle of inclination of the bucket back at ground level - 40° Depth of excavation, mm - 91 / 118 / 118 Maximum angle of profiling, mm - 112° / 115° / 115° Width of the cutting edge of the blade, mm - 2406 From the radiator grille to the cutting edge of the bucket , in transport position, mm — 1505 / 1480 / 1480 Maximum operating height, mm — 4238 / 4264 / 4721 Maximum jaw opening, mm — 790 Bucket jaw clamping force, kN — 56 Weight (without teeth), kg — 428 / 611 / 844 Dimensions and operational characteristics of the backhoe of the Caterpillar 428 backhoe loader Telescopic stick (Standard stick / in the folded position / in the extended position) Maximum excavation depth, mm - 4298 / 4301 / 5294 Maximum excavation depth, mm - 4913 / 4914 / 5853 Maximum excavation depth, 610 mm flat bottom bucket, mm - 4255 / 4259 / 5255 Maximum excavation depth, 610 mm flat bottom bucket, mm - 4872 / 4874 / 5792 Reach from the rotary joint at ground level, mm - 5648 / 5657 / 6583 Loading height, mm - 3819 / 3914 / 4458 Loading reach, mm - 1743 / 166 / 2560 Boom rotation angle - 180° Bucket rotation - 205° Width along supports, mm - 2368 Digging force on the bucket, kN - 63 Digging force on the handle, kN - 35 / 36 / 26 Total lateral displacement - 1258
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