It is best to buy special equipment from trusted manufacturers, and even better from those that produce all imaginable categories. This will not only give confidence in the declared characteristics and reliability of the equipment, but will also facilitate the purchase of machines and spare parts, as well as maintenance. In this case, the ideal choice would be CAT bulldozers, which, together with the rest of the manufacturer’s equipment, will provide a quick payback.
Groups
Heavy equipment is divided into three large classes:
- Small bulldozers. They have high speed, mobility, excellent maneuverability and planning accuracy. They are used for leveling soil in construction and forming road slopes.
- Medium bulldozers. They combine exceptional power with ease of control. The machines guarantee minimum costs with highest productivity.
- Large bulldozers. They ideally combine ease of maintenance, quick payback and high power.
Dealer service
Through the website you can buy a Cat crawler bulldozer, order original spare parts, organize maintenance, diagnostics and repair of special equipment. Experienced specialists are ready to help with the selection of a model and offer the optimal financial solution for the purchase of new equipment.
Buyers of bulldozers receive information, legal and technical support. If necessary, assistance is provided in the operation of special equipment models. To discuss the terms of cooperation, just leave contact information on our website or call. We are waiting for your requests!
Medium class industrial machine
"Caterpillar D 6" is a bulldozer that is recognized as the most reliable machine in the manufacturing corporation itself. The machine is capable of withstanding enormous loads without breaking down. The Caterpillar bulldozer is produced in Japan, but it is also actively used in Russia. This unit can be used in the mining industry, on construction sites, in the forestry industry and for other excavation work. All components and mechanisms of the machine are adapted for trouble-free operation in the temperature range from -50 to +50 degrees Celsius and at an altitude of up to 3000 meters above sea level.
D6 is equipped with an auxiliary working body in the form of a powerful ripper. It is thanks to this that the bulldozer is able to cultivate even frozen, very durable soils. This “monster” quite successfully develops even rocks with cracks.
Bulldozers CAT
The manufacturer of bulldozers under the CAT brand is the famous American company Caterpillar. Perhaps, without exaggeration, this is the world's largest manufacturer of special equipment, as well as various equipment and things for construction sites and workers. It would be easier to say what they are not doing in their field. They are trusted by the largest construction companies, mining complexes, logging enterprises, and so on. All equipment is made at the highest level, and also includes the latest technology and meets current standards.
In this case, we are interested in bulldozers, which are presented in different power categories and have crawler or wheel drive. The equipment is also divided into modifications that are intended for use in various production conditions.
The main advantages that make Caterpillar products stand out:
- A diverse model range, which includes not only modifications for different jobs, but also wheeled or tracked chassis;
- Modular design reduces resources and time spent on production and maintenance;
- Double-circuit hydrostatic drive in crawler bulldozers. Thanks to this, the right and left drive wheels rotate separately. This allows you to make turns on the spot. Also, this type of drive means smooth movement and turns without any jerks. Also, coupled with modularity, such a system is easier to maintain;
- Time-proven reliability of power units and main components, as well as structural strength;
- The large and spacious cabin allows the operator to sit comfortably. And motion control from just one joystick minimizes wasted effort and allows you to concentrate on your work;
- Clear and informative sensors, as well as navigation and a laser ground leveling system, reduce the time for specialized work. This means fewer machines and workers required, as well as higher profitability;
- Large glass area and optimal operator position increase visibility and accuracy of work;
- The presence of a large number of dealers in Russia, which are scattered throughout the territory, simplifies the purchase/rental and maintenance of equipment from Caterpillar.
Using a hydrostatic transmission and hydraulically powered steering for CAT wheel dozers provides the same benefits as crawler dozers;
It is quite difficult to find any shortcomings in such a large and well-known manufacturer, but perhaps the complexity of the design can be highlighted. Of course, it provides a lot of advantages, but it also necessitates highly qualified maintenance with special equipment. And some additions, such as a navigation system, may turn out to be completely useless during work.
A few words about the engine
Caterpillar D6 is equipped with a CAT C9 ACERT engine. The power plant has a total power of 164 kW. In this case, the useful power is 136 kW. The engine has turbines and a high-pressure supercharger. The engine capacity is 8.8 liters and the piston stroke is 149 millimeters. Due to the fact that the D6 is not one model, but a whole series of bulldozers, the motors are also somewhat different from each other. For example, Caterpillar D6 XL, XW, LGP have an engine with a net power of 140 kW. By the way, the D6 is able to overcome even swampy terrain.
Bulldozer Caterpillar D 11
Caterpillar D11 is a high-power bulldozer, mainly used in the mining industry. Originally designed as a bulldozer, it also functions as a push scraper and overburden ripper. Equipped with the same types of blade as D9.
It is produced in the form of a basic model and in a configuration with a reinforced frame (Carridozer).
This type of equipment is so large (overall dimensions 11x3x4.5 m with a weight of 104 tons) that it must be partially disassembled for shipment over long distances. Transported after removing the ripper frame, blade and push frame beam.
Transmission Features
The Caterpillar bulldozer is equipped with a transmission designed for constant power transmission in absolutely any external conditions. For this purpose, especially strong, durable components are used that can ensure fairly smooth gear shifting without loss of power and at high speed of operation of the unit. Manufacturers have provided for the use of a single-stage hydraulic transformer with a torque splitter. This unit allows you to create a very high traction force, reduces the impact on all transmission parts and guarantees the maintenance of high efficiency.
Popular crawler models
Among the mid-range Cat bulldozers, the D6R2 is a popular model and is considered the optimal solution for the construction industry. The machine is equipped with a two-pump hydraulic system, differential steering control, planetary gearbox with load shifting, and a multi-section blade.
The D10T2 bulldozer is a hit with mining companies. Heavy bulldozers work in quarries and large construction projects. The tracked vehicle is equipped with a C27 ACERT engine. Intercooling reduces toxic emissions while maintaining performance.
Chassis
The bulldozer has tracks and a drive. Cable-type winches are connected to a hydraulic drive of the ripper and blade. The caterpillar lug rises to a height of 65 millimeters. The specific ground pressure created by the machine is 0.658 kPa.
The components of the chassis are:
- Special support roller.
- Reinforced design balancer.
- The caterpillar flaps are central, providing reduced pressure on the underlying surface.
- Track end shields.
- SystemOne rollers equipped with a lubrication system.
- Hydraulic track tensioning systems.
- Drive sprocket
- Track roller frame.
- Track chain SystemOne.
The lineup
The lineup includes a fairly large number of cars. For this reason, there will be further division into categories according to power, as well as according to the chassis used: tracked or wheeled.
Low power tracked
Low-power bulldozers include models with a power unit up to 105 hp. With. The main attention in the development and construction of the machines was paid to speed, maneuverability, versatility, transportability, as well as improving soil profiling.
Machines in this category are ideal for the construction of residential buildings, creating slopes on roadsides, road construction, clearing and grading of land, and the like.
Each model has two modifications: XL and LGP. The second has less pressure on the ground and is better suited for use on loose soil or swamps.
Specifications of CAT Low Power Crawler Excavators:
| Model | D3K XL/LGP | D4K XL/LGP | D5K XL/LGP |
| Weight, kg | 7795/8100 | 8147/8500 | 9408/9683 |
| Engine power, kW | 55 | 62,6 | 71,6 |
| Max. speed forward/backward, km/h | 9/10 | 9/10 | 9/10 |
| Ground pressure, kPa | 44,8/29,7 | 38,6/29,2 | 39,1/31,1 |
| Max. ripper digging depth, mm | 337,5 | 337,5 | 337,5 |
| Blade dimensions WxH, mm | 2646x910/3149x860 | 2782x1010/3149x910 | 2782x1073/3220x1010 |
| Dump volume, m3 | 1,52/1,66 | 1,98/1,85 | 2,19/2,34 |
| Digging depth, mm | 573 | 573/590 | 586/572 |
The video shows the CAT D4K XL/LGP bulldozer in action:
Medium power tracked
Medium power models have power units from 130 to 310 hp. With. During the design, emphasis was placed on ease of control, power and maneuverability. This guarantees excellent performance at low unit costs.
Each model is represented by several modifications, which differ in blades and chassis width, which affects the size, weight and specific ground pressure. This determines the scope of application of the machines.
Technical characteristics table 1:
| Model | D5K | D6K | D6n |
| Peculiarities | The chassis is shortened by moving the drive wheel | Suitable for work in the harshest conditions | Suitable for work in the harshest conditions |
| Operating weight, kg | 16672 | 12886 | 16668-XL/17797-LGP |
| Engine power, kW | 112 | 93 | 111,8 |
| Maximum speed forward/backward, km/h | 10/11,6 | — | — |
| Ground pressure, kPa | 32,2-50 | 32,7-42,5 | 52.3-XL / 34.4-LGP |
| Maximum digging depth with ripper, mm | 560 | 360 | 473.5-XL / 359.5-LGP |
| Blade width, mm | 3154-4165 | 3077-3360 | (3154-3272)x-XL / 4080x-LGP |
| Dump volume, m3 | 3,16-4,28 | 2,7-2,9 | 3.18-4.28-XL / 3.16-LGP |
Technical characteristics table 2:
| Model | D6R | D6T | D7R |
| Peculiarities | Version with offset drive wheel | The same version with the drive wheel shifted upward, but adapted to the new fuel standard | Offset version with the highest power in its series |
| Operating weight, kg | 18300 | 20937 | 25000 |
| Engine power, kW | 123 | 153 | 194 |
| Maximum speed forward/backward, km/h | 11,2/14,7 | 11,4/14,6 | 10,54/13,58 |
| Ground pressure, kPa | 61,4 | 34,4-65,5 | 45,78-73,22 |
| Maximum digging depth with ripper, mm | 500 | 500 | 748 |
| Blade width, mm | 3260-4160 | 3260-5070 | 3693-4496 |
| Dump volume, m3 | — | 3,7-5,31 | 3,89-6,86 |
Video review of the CAT D6 crawler bulldozer:
High power crawler
The largest and heaviest machines with a power of over 310 horsepower. A rather non-standard design is used, in which the drive wheels are raised, which also makes the chassis shorter, simplifies maintenance and increases productivity. The main emphasis was placed on increasing reliability and service life.
Each model is represented by several modifications that differ in blades. This determines the scope of application of the machines.
| Model | D8R | D9R | D10T2 | D11T/D11T CD |
| Weight, kg | 37557 | 48784 | 70171 | 104257 |
| Engine power, kW | 226 | 302 | 447 | 634 |
| Max. speed forward/backward, km/h | 10,8/13,9 | 11,9/14,7 | 12,7/15,8 | 11,8/14 |
| Ground pressure, kPa | 95,1 | — | — | — |
| Max. ripper digging depth, mm | 780-1135 | 798-1231 | — | — |
| Blade width, mm | 3937-4978 | 4310 | — | — |
| Dump volume, m3 | 4,7-11,7 | 13,5 | — | — |
Photo of CAT D10T2 crawler bulldozer
Wheeled medium and high power
Wheeled bulldozers have a design similar to loaders. Namely, a frame made of two parts, which are connected by a hinge and controlled by hydraulics. They are designed for greater maneuverability and speed than tracked ones. This makes it possible to move long distances.
| Model | 814F Series 2 | 824K | 834K | 844K | 854K |
| Weight, kg | 21713 | 34000 | 47750 | 75000 | 102000 |
| Engine power, kW | 173 | 302 | 370 | 561 | 676 |
| Max. speed forward/backward, km/h | 31/34,9 | 34,8/39,7 | 35,4/21,4 | 24,5/26,4 | 22,8/25,1 |
| Blade width, mm | 3596 | — | — | — | — |
| Dump volume, m3 | 2,66 | — | 7,9-22,2 | 15,9-30,7 | 25-45 |
Photo of wheeled bulldozer CAT 824K
For disposal of waste at landfills
These are crawler dozers that are used to handle waste and have a protected cab, as well as protective covers for the radiator, engine compartment, engine crankcase and pipes. This ensures the mechanisms are protected from harmful influences even in the most difficult conditions.
Structurally similar to conventional high-power crawler bulldozers.
| Model | D6R | D7R | D8R | D9T WH |
| Weight, kg | 22520 | 27610 | 37600 | 50100 |
| Engine power, kW | 145 | 179 | 228 | 325 |
| Blade width, mm | 3260/4063 | 3690/4500 | 3937/4400 | 4354/4686 |
| Dump volume, m3 | 11,2/9,3 | 14/12,3 | 20/21,1 | 28,8/33,5 |
The video shows the CAT D9 bulldozer in action:
Cabin
The Caterpillar bulldozer is equipped with a cabin in which, to ensure the required safety and comfort, the following are used:
- Double-layer panoramic glazing that resists icing in winter and in northern latitude conditions.
- Covering with a high noise absorption coefficient, significantly reducing operator fatigue during operation.
- Hydraulic suspended seat with anti-vibration function.
- Air conditioner.
Bulldozer Caterpillar D 6
This bulldozer belongs to the medium power group on a crawler chassis. Operating weight – 20 tons. The Caterpillar D 6 bulldozer is designed and manufactured to work in extremely difficult climatic conditions, including waterlogged soils. The suitable operating weight and efficiency of the ripper make it possible to develop frozen soil where the depth of freezing does not allow other bulldozers to complete this task.
The operator's cab comfort common to all dozers in this group is complemented by implement lockout switches, throttle switches, automatic gear shifting and a hydraulic blade control lever.
Options
Caterpillar bulldozers, the technical characteristics of which may vary slightly depending on the model, are generally easy to operate. Gears are switched by a friction lever.
The main indicators of D6 are:
- Basic length – 3860 mm.
- Width including blade – 3360 mm.
- Height – 3195 mm.
- Track width – 2160 mm.
- Ground clearance – 507 mm.
- Blade volume – 4.28 cubic meters. m.
- Operating weight – 16605 kg.
The main working equipment on the machine is a standard blade and ripper. The latter, in turn, is presented in the form of a knife-like device, which is mounted in the rear of the unit. Single-shank or multi-shank rippers can also be used. The use of special plates with sharp carbide tips allows you to develop a digging force of up to 8 tons. Reverse excavation can take place with an impressive force of up to 18.5 tons. In general, the working bodies are quite capable of crushing even rock into small particles.
Bulldozer Caterpillar D 9
This is a heavy duty bulldozer, also equipped with a removable large blade and a rear ripper. Size, durability and low operating costs have made the D9 one of the most popular crawler tractors in the world.
The blade is usually offered in three options:
- Straight blade (Category S), which is shorter and has no curvature, side links and can be used for precise grading and grading.
- The universal blade (category U) is distinguished by its height and concavity, and has large side links that allow it to move a larger volume of materials.
- The combination blade (SU) is shorter, has less curvature and shorter side links, typically used to move large rocks in quarries.
