Heavy motor grader DZ-98, specifications which are given below, is used in road construction and in quarrying. Its functionality allows moving large volumes of embankments and soil, as well as leveling the roadway.
The machine is equipped with a front dozer with a swivel mechanism, which makes it possible to process a large area in a minimum time period. The equipment is powered by a YaMZ diesel power plant, which has a power of 173 kW. The complete set includes a variety of attachments, including pickaxe and loosening systems. An additional wing can be mounted on the dump, which serves to clear snow drifts. Moreover, with a lateral analogue, this can be done even behind fences.
general description
The DZ-98 motor grader is equipped with a special working attachment in the form of a blade with a knife, which is installed on the equipment frame. It is powered from diesel installation, performs lifting, lowering, turning to the sides and vertically. High productivity is ensured by good maneuverability of the machine and the ability to set the blade angle in several positions.
Comfortable working conditions for the operator are guaranteed by balancers, a reliable, informative frame, automatic control of the blade position, as well as main and additional sensors. The conveyor package includes a side blade, a bulldozer analog, a rear ripper and additional equipment (if necessary).
Transmission unit
The DZ-98 unit, the technical characteristics of which correspond to most analogs in its category, is equipped with a system for transmitting torque from the motor to the wheels using a transmission, which makes it possible to adjust the direction and significance of this aspect. It is also possible to disconnect the power plant from the drive axle. The unit also serves to take off the power of the drive of hydraulic pumps.
The node consists of the following elements:
- Clutch block.
- Hydraulic pump drive reducer.
- Transfer box.
- Parking brake.
- Dispensing mechanism.
- Cardan transmission of the drive of the rear, front, middle axles.
All components are included in a single unit, which represents the transmission. It interacts with the hydraulic pump drive housing and the engine flywheel by means of a centering belt. The transmission of torque is carried out through a special elastic coupling and a dozen rubber fingers. Various pin, stopper and bolt fixing parts are also available. 
Middle and rear axle
Special construction machine DZ-98, the technical characteristics of which we will continue to consider further, has an interchangeable middle and each of the nodes is a steel beam with a main gear bracket and bevel gears with circular teeth. Final drives are fixed on flanges, balanced axle shafts connect the main gear with an additional hook.
The small main gear of each side gear is aggregated with the axle shafts by means of a flange and a main bushing. Each element is equipped with a pneumatic disc brake. These parts are in an oil bath. The bridges themselves are mounted on a pair of balancers using ball and cylindrical pins. This design simplifies bridge installation and maintenance.
Front axle
The DZ-98 motor grader is equipped with a driven front axle. Its main part is almost identical to the back and middle element. The assembly is distinguished by swiveling parts of the wheels and fixation to the frame. The beam of this design is cast with heads welded at the ends. In the middle of the part, there are two pins located along the longitudinal axis. On them, the bridge can rotate relative to the base in the transverse plane.
The block includes fully unloaded axle shafts, along the edges of which the forks of the pair are fixed. With its help, the torque is transformed to the final drive. It changes the position of the working part in the horizontal direction. The rest of the final drives differ from the elements of the rear and middle axles in that they do not have wheel brakes, as well as the ability to rotate the beam relative to the bridge horizontally. They are connected to each other by means of a transverse tie rod. The convergence of the front wheels is also carried out through it. 
Blade blade DZ-98 and basic equipment
The area of \u200b\u200buse of this machine increases the mass of possibilities for installing additional equipment. It includes:
- Scraper.
- Bulldozer attachments.
- Loosening and track-laying equipment.
- Snow blowers.
All tools are placed on the main frame, allowing for laying, road repair, as well as terrain planning, snow clearing, digging pits, cutting bushes. The domestic car plays an important role in laying airfield strips and railway tracks.
The track laying device consists of a central blade and two wings on the Elements can be moved to the right or left position, thanks to a pair of hydraulic cylinders. In addition, the rising stem assists in turning the workpiece around a vertical axis. The equipment suspension is identical to that of a similar ripper and dozer.
Other equipment
The manufacturer DZ-98 has provided for the possibility of equipping the grader with various functionality. The ripper is equipped with a working blade and suspension. In general, this is a cast beam, on which there are five teeth inserted into special sockets. The elements are fixed with fingers and a check.
Designed for cleaning roads, runways and other areas from snow drifts and drifts. The process is carried out by shifting the interference to the side or by throwing it over. At top speed, snow can be thrown up to 15 meters, which allows you to clear wide sections of roads with minimal time investment.
The bulldozer device is aimed at moving soil, bulk materials, as well as the development of trenches, pits and other auxiliary work. Heavy and frozen soils are developed with preliminary loosening. The equipment itself includes a blade and a suspension consisting of a push frame, a linkage and a lowering mechanism.
The DZ-98 spare parts include a scarifier. It is intended for the development of soils of the 4th category, dismantling of worn-out road surfaces, and opening the upper permafrost layer. The device consists of a cast frame part with inserted teeth, placed in special slots. The equipment is connected by means of rods to the head of the main frame of the grader. The auxiliary elements are the hydraulic cylinder and the lifting and lowering eyes of the equipment.
Grader DZ-98: technical characteristics
Below are the main parameters of the considered technique:
- Length / width / height - 6 / 3.2 / 4 meters.
- Front wheel track (narrow / wide) - 2.62 / 2.69 m.
- A similar indicator of the rear wheels is 2.5 / 2.57 m.
- Maximum ground clearance - 615 mm.
- The operational weight of the machine is 19.5 tons.
- The number of transfers (forward / backward) - 6/6.
- Travel speed (maximum) - up to 47 km / h.
- The minimum turning radius is 18 meters.
- Stability on a slope - 15 degrees.
- The braking distance at a speed of 30 km / h is 14 m, the same indicator for the failure of one circuit is 41 m.
- Engine type - diesel engine YaMZ or "Cummins" with a rated power of up to 275 horsepower at a speed of 1700 rotations per minute. Start - starter type.
Other parameters
Other features of the motor grader are as follows:
- DZ-98 gearbox with all-wheel drive, mechanical with a disconnecting front axle.
- Hydraulic pumps - single-row drive and flexible coupling.
- The clutch type is a dry closed block with a braking driven shaft.
- Transfer gearbox - single row with parking brake for middle and rear drive.
- Intermediate gears are of cardan type.
- Band parking brake.
- Wheel formula - 1/3/3.
- Drive axle - front steered.
- Final drives - cylindrical with one range, have an internal hook.
- Fully balanced axle shafts.
- Wheel brakes - multi-disc with sintered elements, placed in an oil bath.
- Front and rear suspension - balancer with reaction rods, provides vertical pumping of axles.
- The middle suspension is responsible for pumping the drives in the transverse plane and is equipped with hinges.
- Light and sound alarm.
Equipment characteristics
The DZ-98 device involves the use of several devices, namely:
- Track laying system. It has a grip up to 3.4 meters, a blade height of 0.95 m. The wing mounting angles are 48 and 24 degrees. The dump falls below the support platform by 20 centimeters.
- Bulldozer equipment. Capture the prism while drawing - 2.5 cubic meters m. Blade height - 0.97 m. Main cutting angle - 55 degrees, lowering below the working surface - at least 11 centimeters.
- Loosening device. Equipped with five tines, the depth and working width are 0.23 and 1.8 meters, respectively.
- Grader blade. This equipment consists of a spare part DZ-98, which has a length of 4.2 meters and a blade height of up to 0.7 m. The angles of stripping and cutting are 70 and 90 degrees, respectively. The lateral movement of the part is 1.05 m, and the lowering below the supporting ground is 0.5 m (minimum indicator).
Technical and economic indicators
Let's start by controlling the motor grader. The gearbox and clutch are mechanically and hydraulically controlled. The brakes are applied thanks to the pneumatic mechanism. The electrical equipment is a 8.2 kW 24-volt starter. This unit includes a pair of 6 CT-190A rechargeable batteries. 
Below are the parameters of the technical and economic direction:
- Fuel consumption DZ 98 - 0.15 kg / cu. m.
- Fuel tank capacity - 485 liters.
- The hydraulic system of the machine holds 120 liters of working fluid.
- Working resource in engine hours (minimum) - 8400.
- The coefficient of technical application is not less than 0.85.
- Labor intensity - 0.95 person / h.
- Ergonomics - 14-31 degrees, depending on climate conditions.
- Environmental standard - GOST 12.1.012-90.
- The emission of exhaust gases and the level of smoke in the workplace comply with the standards of GOST 17.2.2-02.86 and 17.2.2-05.86.
In conclusion
The DZ-98 motor grader, the dimensions of which are indicated above, is a unique domestic machine designed to perform a wide range of work functions. The considered special equipment is able to cope with the tasks of road construction from the 1st to the 4th category, it has the ability to be equipped with various attachments.
The technique is actively used in the construction of sections of railway tracks, airfields, as well as for the needs of the land reclamation, hydraulic engineering, geological and irrigation industries. An additional advantage of the machine is a wide range of operating temperatures (from -40 to +40 degrees Celsius).
Heavy motor grader DZ 98 produced by the Chelyabinsk Tractor Plant. It is one of the most powerful mechanisms used in construction and road works. He belongs to the 250 class, which allows him to perform work of any complexity.
Motor grader, depending on attachments, can be used when performing various works. It can be:
- Construction and repair work on roads of all categories.
- Reclamation and irrigation works.
- Embankment equipment.
- Loosening and development of soil rocks of 1-4 classes.
- Terrain planning for a given profile.
- Communal construction.
- Snow removal work.
The technical characteristics of DZ 98 allow to perform these works.
Grader dz 98
Specifications
General
| Characteristic | The quantity | |
| Total weight, tons | 19.8 | |
| Width (dump in transport condition), m | 3.22 | |
| Height, m | 4.0 | |
| Length, m | 6.0 | |
| Turning radius on level ground, m | 18 | |
| Track width between front wheels, m | Narrow wheels | 2.6 |
| Wide wheels | 2.7 | |
| Track width between rear wheels, m | Narrow wheels | 2.5 |
| Wide wheels | 2.6 | |
| Clearance height, m | Under the dump | 0.3 |
| Front axle | 0.6 | |
| Rear axle | 0.45 | |
| Transmission | In every direction | 6 |
| Speed, km / h | Forward | 3.0-40 |
| Back to | 4.5-47 | |
Engine performance and fuel consumption
DZ98 graders, depending on the modification, are equipped with YaMZ-238NDZ or Cummins engines. Both engines have a Euro 1 environmental classification. They are characterized by a long service life.
The average fuel consumption is 220 g / m3.
Device
The main elements of the DZ 98 grader are the transmission, chassis, control cabin and attachments.
The transmission is used to transfer power to the grader wheels and to drive the hydraulic pumps of the attachment. It includes:
1. Gearbox.
2. Clutch basket.
3. Reducers of the hydraulic pump and parking brake;
4. Cardan drives to bridges.
The chassis consists of three driving axles with a wheel arrangement of 3x3x1. The front axle is operated by the operator from the cab and, if necessary, can be switched on or off.
Cabin
Has a high glazing area, which increases the driver's view of the operator. Ergonomics and comfort are provided by an adjustable steering column and a comfortable seat. Option of additional installation of the air conditioner is possible. The cab is equipped with a ROPS and FOPS.
The cab can, as a separate module, be quickly mounted or dismantled.
Additional equipment is installed to increase operator comfort and productivity. It includes:
1. The system of automatic leveling of the terrain, which allows the most accurate leveling of the working area.
2. A system for suppressing vibrations of the blade when it enters the ground.
3. Installation of servo control for all motor grader systems.
4. Presence of heating systems for rear-view mirrors, operator's seat, fuel system cleaning filter. This is true when working in cold climates.
What is completed
Designed for the motor grader attachments, which allows you to perform work of varying degrees of complexity. It is installed on the head of the main frame and includes:
- equipment for loosening soil and road surfaces;
- equipment for laying tracks;
- equipment for bulldozing works;
- equipment for snow removal;
- scarifier.
The track paving equipment includes a blade and two wings that are hinged to it. They are raised and lowered using hydraulic cylinders. Depending on the degree of exit of the cylinder rod, the wings are in a track-laying or bulldozer state. They can have a right or left grader position.
The loosening equipment includes a suspended ripper. The ripper is a bar-shaped ripper with five teeth.
A blade is used for snow removal work. The cone-shaped one makes it possible, at low speed, to move the snow to one side. As the driving speed increases, the snow is thrown to the side up to 20 meters, which guarantees that there is no snow accumulation along the road.
Bulldozer equipment is used to move rocks, fill ditches. It includes a dozer blade, push frame suspension and hydraulic cylinders. For work with frozen soil and soils of categories 3-4, they are loosened.
The scarifier is used for crushing category 4 soils, destroying the used roadbed and frozen soil.
Equipment characteristics
| To pave the way | 3.0 | |
| Blade width, m | up to 3.5 | |
| Blade height, m | 9.5 | |
| 45-48 | ||
| Dump depth, m | from 0.2 and higher | |
| For dozer work | Drawing prism capacity, m3 | 2.5 |
| Blade width, m | 3.2 | |
| Blade height, m | 9.7 | |
| Typical blade installation angle, degrees | 50-55 | |
| Dump depth, m | from 0.1 and higher | |
| For loosening soil | Number of teeth | 5 |
| Deepening of teeth, m | from 0.25 and more | |
| Capture width, m | from 1.8 | |
| Grader equipment | Blade width, m | 4.2 |
| Blade height, m | 0.7 | |
| Typical cutting angle, degrees | 30-70 | |
| Side exit of the dump in any direction, m | 1.05 | |
| Dump depth, m | from 0.5 and higher | |
| Overcoming the cuvette, m | from 0.5 and higher |
Benefits and reviews
The popularity of the DZ98 grader is based on numerous advantages. These include:
1. Ability to use various attachments.
2. Ability to work on soils of different density.
3. High level of overcoming obstacles.
4. Easy to operate.
5. Ability to adjust the blade width and depth.
6. Reliability of units and mechanisms.
7. Easy to maintain and repair.
8. Long period of operation.
9. Replaceable attachments for various construction work.
10. Possibility of using a motor grader at temperatures ranging from minus 50 to plus 50 degrees.
Numerous reviews indicate that many years later, the DZ 98 grader remains one of the most popular in its class. One significant drawback is seen constant among the reviews. This is an insignificant gas contamination of the cabin during operation. It exists on old models of technology. Modern cars are equipped with improved gas evacuation devices, ventilation and air conditioning systems are installed in the cabins.
The cost of new and used
The price of a DZ 98 motor grader depends on what configuration it is in. average cost new car is from 5.2 to 6 million rubles.
The cost of a used grader depends on the year of manufacture, the availability of equipment, the used motor resource, the condition of parts and assemblies. The estimated cost can range from 3 to 4 million rubles.
Analogs
The DZ 98V motor grader is an improved continuation of its predecessor. The digital designation indicates the difference between the power plant and attachments from the base models. For example, the grader DZ 98V1.4 is equipped with equipment for loosening and bulldozing, and the DZ98V1.1 model is equipped with a scarifier.
The versatility of the work that the motor grader is capable of performing, and its cost, bring it into the category of price and quality. The long period of operation and the absence of serious malfunctions make it a leader among construction equipment of its level.
| Technical characteristics of the grader DZ-98V | ||
| Grader class DZ-98. AT | 250 | |
| Width (with blade in transport position) | 3220 mm | |
| Height (without flashing beacons) | 4000 mm | |
| Longitudinal base | 6000 mm | |
| Front wheel track | narrow - 2622 mm wide - 2576 mm |
|
| Rear wheel track | narrow - 2502 mm wide - 2576 mm |
|
| Ground clearance | under the blade in transport position - 350 mm under the front axle - 615 mm under the rear axle - 440 mm |
|
| DZ-98 grader weight. AT | operational - 19,500 kg falling on the front axle - 5660 kg falling on the middle and rear axles - 13850 kg |
|
| Braking distance of a grader moving at an initial speed of 30 km / h on a horizontal section of dry asphalt with the clutch disengaged | 14 m | |
| ENGINE of grader DZ-98. AT | ||
| Model | YaMZ-238ND2 | |
| A type | 4-stroke 8-cylinder, diesel engine liquid cooling with gas turbine pressurization and water cooling | |
| Engine power | 230 hp / 169 kW | |
| Start | electric starter | |
| Rated speed, rpm | 1700 | |
| ELECTRICAL EQUIPMENT of the DZ-98 grader. AT | ||
| Voltage | 24V | |
| Rechargeable batteries | 2x12V | |
| Generator | 24V | |
| Starter power | 8.2 kW (1.2 HP) | |
| TRANSMISSION of the grader DZ-98. AT | ||
| A type | mechanical, with all-wheel drive, with a front axle shut-off mechanism | |
| Hydraulic pump drive reducer | single row with flexible coupling | |
| Clutch | dry, two-disk, permanently closed with hydraulic servicing of its drive, with a tiller of the driven shaft | |
| Transfer gear | single-row for driving the middle and rear axles with parking brake | |
| Parking brake | belt type | |
| Intermediate gears to bridges | cardan | |
| Speed | forward 0-32 km / h back 0-25 km / h |
|
| Number of gears | When moving forward - 6 When moving back - 6 |
|
| REFUELING VOLUMES of the grader DZ-98. AT | ||
| Fuel tank | 485 l | |
| Engine cooling and heating system | 50 l | |
| Engine lubrication system | 32 l | |
| Hydraulic system of the motor grader | 120 l | |
| Gearbox, hydraulic pump drive reducer, transfer case | 35 l | |
| The main transfer of the rear, middle axles (each) | 7 l | |
| Front axle final drive | 15 l | |
| Final drive axle | 8.6 l | |
| Wheel brake | 3.6 l | |
| Blade Swing Reducer | 3 l | |
| DZ-98 grader CONTROL. AT | ||
| Transmission control | mechanical | |
| Front wheel steering | hydraulic | |
| Wheel brake control | pneumatic | |
| Management of working bodies | hydraulic | |
| HYDRAULIC SYSTEM of the DZ-98 grader. AT | ||
| Hydraulic reservoir with lockable lid Hydraulic Oil Level Meter Hydraulic oil cooler |
||
| UNDERGROUND OF DZ-98 grader. AT | ||
| Wheel formula | 1х3х3 | |
| Leading bridges | all | |
| Steering bridge | front | |
| Main gear of bridges | single-stage, tapered without differentials | |
| Final drive axles | single-stage, cylindrical, with gearing | |
| Half axles | fully unloaded type | |
| Wheel brakes | multi-disc with sintered discs, working in an oil bath | |
| Rear axle suspension | balancer with reactive rods, providing pumping of the vertical plane masts | |
| Front axle suspension | articulated, providing pumping of the bridge in the transverse plane | |
| Tire size, inch | 16.00-24 or 20.5-25 | |
| Tire pressure | 0.25-0.3 MPa | |
| CAB of the grader DZ-98. AT | ||
| Spacious and bright safety cab with excellent visibility in the built-in machine rollover protection system (ROPS), from falling objects (FORS). | ||
| OPTIONAL EQUIPMENT | ||
| Grader blade Dozer blade |
||
Grader DZ-98
The DZ-98 grader is used in road construction for leveling and grading the soil surface, moving soil and road building materials, for building, repairing and maintaining dirt roads. DZ-98 graders are also used for cleaning roads from snow and ice. The working body of the grader DZ-98 is a rotary curvilinear blade.
Advantages of the DZ-98 motor grader
Possibility of installing a manual transmission with gear shifting by friction clutches taken out from the box body;
- The presence of a front drive axle, which ensures the best use of the machine's adhesion weight, high traction on the blade, directional stability during side cutting, high cross-country ability in difficult conditions;
- The use of a part-turn blade provides regulation of the tractive effort of the machine by changing the width of the blade without lifting it. At the same time, the number of passes is reduced, the quality of planning works is increased;
- Multi-disc wheel brakes of the vibropress, operating in an oil bath, are reliable and do not require adjustment during operation;
- Adjustable steering column improves driving comfort;
- Possibility to install the Grammer operator's seat, Konvekta air conditioner, FOPS-ROPS cab.
It is advisable to use motor graders when performing large-scale energy-intensive earthworks or work in difficult road conditions:
Construction and overhaul dirt and gravel roads;
- device in an unpaved bed of a trough under the base of the road;
- movement of soil into the embankment;
- leveling of bulk soil and leveling of the surface;
- moving, inert materials with stabilizing additives when mixing them on the road;
- scarifying (loosening of soil and worn-out road surfaces);
- layout of the surface of large areas;
- cleaning roads and territories from snow drifts.
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