The HTZ-17221 tractor is a direct successor to the Soviet model T-150K from the Kharkov Tractor Plant. Based on the modernized technology, a series of machines was created designed to perform work requiring high traction, maneuverability, and unpretentiousness to the conditions of daily operation. From its predecessor, it retained the movable articulated frame, high ground clearance and good maintainability, so valuable during round-the-clock harvesting.
Rice. 1 – General view of the HTZ-17221 tractor
Specifications
The performance indicators of the HTZ-17221 tractor have no analogues. The car has received updates that allow it to compete in the market with existing foreign analogues. The basic modification (without letters and additional numbers in the name) has the following performance characteristics:
| Traction class | 4 |
| Nominal pulling force | 40 kN |
| Structural mass | 8.17 t |
| Operating weight | 8.62 t |
| Maximum permissible load on the front axle | 5.35 t |
| Maximum permissible rear axle load | 3.27 t |
| Load capacity | 4.7 t |
| Number of forward/reverse gears | 16/8 |
| Forward speed min./max. | 3/40 km/h |
| Reverse travel speed min./max. | 5-7 km/h |
It is necessary to give a brief explanation of this table:
- Basic power elements and structural units have a safety margin of 5:1. Load indicators are given taking into account possible uneven distribution under difficult operating conditions.
- Maximum speed is only possible on hard, level surfaces of public roads.
- The composition of the operating mass, in contrast to the design indicator, takes into account fuel and fuels and lubricants.
- Reverse gears are often used not only to change the location of the machine, but also for low-speed agricultural operations.
Engine
All modifications of the KhTZ-17221 use the Russian-made YaMZ-238 engine. Tractor resources on the World Wide Web often contain advice on modifying or switching to other models from foreign manufacturers, but this is strictly not recommended.
The basic unit delivered from the factory has a V-shaped arrangement of 8 cylinders. It is also installed on the K-700 series, military equipment and a number of excavators. Modifications with a turbine develop more power, but have more complex maintenance and require expensive spare parts for repairs.
Rice. 2 – General view of the YaMZ-238 engine
These are classic fuel injection pumps with distributed injection. Each cylinder has its own pump section and a pair of valves (according to Western classification this is called OHV). The rod pushers are based on rollers, which significantly increase the service life of the engine. The connecting rod mounting journals on the crankshaft are located at right angles. This solution resulted in uniform flashes and no uncontrolled detonation. The pistons are made of aluminum alloy, but to increase reliability, 3 compression rings are installed under them.
Also, tractors of this type come off the assembly line with a YaMZ-236 engine, which has 6 cylinders and, accordingly, has a lower torque. The resource guaranteed by the manufacturer for each model is equivalent to 800,000 km on public roads. The timing of major repairs depends on operating conditions and fuel quality.
General Main Characteristics
The tractor has the following characteristics:
- Power. It directly depends on the used internal combustion engine. For YaMZ-236 this is 150-300 hp, and for YaMZ-238 235-420 hp. Indicators may vary depending on operating conditions and the overall quality of the fuel used. This is also affected by the technical condition, and in initial modes even by the ambient temperature.
- Dimensions. The length with rear linkage is 6.13, height 3.4, and width 2.46 m. Wheelbase 2.86 m, ground clearance 0.4, and turning radius 6.7 m.
- Fuel consumption. For YaMZ-236 and 238 it is 224 and 251 grams of fuel to produce 1 kW of energy per hour. These are averages that vary depending on the load.
- Transmission. To switch, only a hydraulic drive is used; a person does not have enough hand force to switch the lever. Switching on the go is allowed. A total of 12 forward and 6 reverse speeds are provided on the basic modification of the tractor. These figures can also vary greatly depending on the engine used. The main gear converges onto a cone with complex spiral teeth that provide optimal traction. The cross-wheel differential is implemented using a simple planetary mechanism with one stage.
Rice. 3 – Gearbox assembly.
- Chassis. The tractor control is completely based on hydraulics, and it is separated from the functional system that powers the unit. Rotation is possible due to the mutual movement of two half frames. By default, both axles are driven and their design is completely identical. The only exceptions are the location of the base gear and the difference between the sizes of the axle shafts. Differential locking occurs only in automatic mode. If the front axle is movable, then the rear axle is rigidly fixed. The springs are supported by additional shock absorbers. The wheels have the same diameter. Only pneumatic tires are used. The cabin has its own shock absorption system.
- Hydraulic system. It allows you to use and control trailed equipment. The connection is made under the rear fender on either side. The hoses are connected using special couplings. Transfer of control is completely possible from the cab. There are also possibilities for automatic control of the hitch. Automation allows you to correct tractor driver mistakes and significantly save fuel.
- Frame and power plant. It was inherited from the T-150K. Its design consists of a pair of semi-frames connected using power hinges. They maintain the position of tractor parts in two planes at once, which avoids overturning. The power plant is located on the front half frame. To prevent the entry of dirt and dust, it is covered with a hood. Special panels provide quick access for adjustments in the field. The clutch is also protected by a casing and operates on the friction principle. There is only one driven disk, but it is reinforced to resist loads. The clutch is tightened using pneumatics until the functional parts are mated.
Cabin
This part is very different from the uncomfortable models of previous tractors. Double-glazed windows were installed, making it easy to maintain the temperature inside during severe frosts. Inside there is an air conditioner and a stove, allowing you to work comfortably in any weather. The controls are located so that the operator does not waste time gaining access.
Rice. 4 – Instrument panel inside the cabin
The racks are reinforced, which protects the tractor driver in case of a possible rollover. The cabin also has an increased glass area, which significantly increases the viewing angle. An ergonomic soft chair will prevent you from getting tired from shaking during a long working day.
Tractor HTZ 17221
The tractor from the Kharkov manufacturer KhTZ model 17221 is a direct successor to the legendary Soviet tractor T-150K.
Leading engineers of the enterprise reviewed all outdated components and assemblies, but it is worth noting that extremely durable structural elements, proven over the years, remained unchanged. Fuel consumption was reduced by 16%, while productivity increased by 1/5. This applies to both maximum power and performance.
The main problem of the T-150K was the inability to integrate with modern equipment, which was corrected. A second cylinder was added to the rear linkage, which significantly increased lifting capacity. The power take-off shaft began to operate through a gearbox, which allows the use of a wide range of units. Now it is possible to work with plows, harrows, seeders, and machines for harvesting various crops.
This tractor, like its predecessor, is widely used for transporting goods. It can tow trailers and semi-trailers with a load capacity of up to 20,000 kg.
The ancient minimalism of the T-150K is a thing of the past, and now special attention has been paid to driver comfort in the HTZ-17221 . A large double cabin with increased volume began to be used. A powerful air conditioner is installed, 6 filters prevent dust and plant particles from entering the cabin. Insulation from solar heating and noise from units is well thought out. The cabin has received a thoughtful overview, and the tractor driver’s safety systems in case of a rollover or accident have also been improved. The ergonomics are also well designed, which reduces fatigue of the driver and assistant. This helps to increase labor productivity and the quality of work performed.
HTZ 17221 tractors are used for the following purposes:
— Agricultural tasks that require large amounts of energy.
— Transportation of goods on trailers and semi-trailers in complete off-road conditions.
— This tractor can be used for construction work.
Tractor HTZ-17221
The HTZ-17221 general purpose agricultural wheeled tractor of traction class 3 is designed...
More details
Main characteristics of the XTX 17221 tractor
— The diesel six-cylinder unit YaMZ-236D-3 is used, which is produced by the Russian JSC Avtodizel. The maximum power of this V-shaped unit is 175 horsepower. Engine displacement is 11 liters. Starting is done using an electric starter.
— All 4 wheels of the tractor are driven. It is possible to install different tires depending on the tasks being solved and the type of soil.
— A hydromechanical gearbox with a dry clutch is used. Due to the large size of the basket, a single-plate clutch design is used, which is sufficient to meet the declared characteristics. The tractor supports 20 forward speeds and 10 reverse speeds.
Technical characteristics of the XTZ 17221 tractor and operating features
— The tractor driver sits strictly in the center, which provides an additional reduction in sensitivity when plowing with reversible plows and other mounted devices for tillage.
— Supports the performance of any work as part of agricultural technical complexes.
— Can be used when working with trailers and semi-trailers without restrictions in volume, but with a transport weight limit of 20 tons (excluding the weight of the trailer). Transportation is possible in conditions of complete absence of roads.
— The body is supplemented with a large number of multilayer plastic elements, which significantly reduces maintenance and repair costs.
— The hydraulic distributor supports 5 power sections for units and machines, so the tractor can be used as a hydraulic base during construction work.
— A bulldozer blade can be supplied as additional equipment.
— The tractor also supports doubling of wheels, but under the obligatory condition that the wheels have uniform wear.
— A set of control and measuring equipment can be supplied that monitors fuel consumption in different operating modes.
— For operation in the harsh conditions of the Far North, it is necessary to purchase an additional pre-start electric fuel heater.
— The cabin is single, an additional seat can be installed. The glass area is very large, which increases visibility.
— All metal surfaces of the cabin are covered with noise-insulating material, which reduces the fatigue of the tractor driver.
— The gearbox has received an increased number of ranges, which switch almost instantly due to the presence of constant mesh gears.
— All devices in the tractor are electronic.
— When aggregating, it is necessary to consult the place of purchase regarding the compatibility of the tractor and the units.
— The rear canopy is carried out according to a three-point scheme, hook grips are used. This allows the use of both hinged and semi-mounted structures.
— 5 hydraulic valve sections significantly reduce oil consumption.
— An extended speed range allows you to select the optimal travel mode for working with any unit.
— Twin tires support a pressure control system directly from the cab, which allows you to increase the productivity of HTZ-17221 tractors by up to 20% even on the most difficult fields.
— It has a relatively low weight for tractors of this class - 8400 kg without dual wheels.
— The traction force of the tractor on a hard surface is 40 kN.
— The gearbox operates without breaking the flow, so it is possible to shift under maximum load within the current range.
— The maximum transport speed is 40 km/h on the highway, and the minimum speeds are 3.72 km/h when moving forward and 7.81 km/h when moving backwards.
— The main gears are bevel type. A scheme with spiral teeth is used, as well as with a cross-axle differential that can be locked at any time.
— Additional speed modes are provided thanks to a planetary gearbox with one stage.
— The power take-off shaft supports two rotation speeds – 540 and 1000 rpm. It is independent of the tractor speed and engine speed.
— The tractor consumes the following quantities of hydraulic fluids:
1. In the engine and oil pan - 29 liters.
2. The gearbox requires at least 18 liters of gear oil.
3. The gearboxes of both axles contain 64 liters of oil.
4. PTO gearboxes consume 7 liters of oil.
5. Cooling antifreeze requires 34 liters.
6. The tractor's hydraulic control system requires 48 liters of oil.
7. Power hydraulics for controlling attachments uses 46 liters of oil.
— Fully filling the tractor’s fuel tanks requires 440 liters of diesel.
Attachments
KhTZ-17221 was originally designed as a universal tractor. Thanks to a wide range of attachments, it can be used wherever its terrain allows. The following types of additional equipment are available for it:
- Plows up to 8 furrows.
- Multi-row cultivators and complex soil aeration systems.
- Disk passive and active attachments
- Various types of harrows, including those with curved teeth
- Seeders, including self-propelled varieties.
- Agricultural dumps used for land reclamation, processing of virgin soil, and drainage of wetlands.
- Equipment for peeling stubble and chopping tops of large crops, including sunflower and corn.
Rice. 5 — KhTZ-17221 at field work
The tractor can be used in various industrial sectors thanks to the following equipment:
- Bulldozer type blades.
- Units for loading logs and wood waste.
- Front loaders
- Plows for cleaning the roadway, including those with variable geometry.
- Wedges for creating ditches and firebreaks.
- Equipment for transporting and picking up large-sized concrete products.
- Soil tillers and rotors.
Equipment based on the HTZ-17221 tractor
Model of wheeled tractor HTZ-17221-21
widely used, it is equipped with a YaMZ-238M2 engine produced by the Russian JSC Avtodizel with a power of 240 hp.
HTZ-17221-21
has an increased load capacity of the rear mounted two-cylinder device and an independent power take-off shaft, which allows you to work with trailed and semi-mounted non-motorized combines, with machines for applying organic and chemical fertilizers. Upon customer request, the 17221-21 tractor model is equipped with air conditioning and an automatic hitch control system - this allows improving the operator’s working conditions and increasing tractor productivity by 8-10 percent, while simultaneously reducing fuel consumption by 6 percent.
| Engine HTZ-17221-21 | |
| Model, manufacturer | YaMZ-238M2, JSC Avtodizel, RF |
| Rated power, kW (hp) | 176,5 (240) |
| Rated rotation speed, rpm | 2100 |
| Number of cylinders, pcs. | 6 |
| Cylinder arrangement | V-shaped |
| Cylinder diameter/piston stroke, mm | |
| 130/140 | |
| Working volume, l | 14,86 |
| Starting system | electric starter |
| Specific fuel consumption at rated power, g/kWh. (g/hp.h.) | 220 (162) |
| Transmission | |
| Clutch | dry single-disc |
| Transmission | hydromechanical, switchable on the fly under load within each range |
| Number of ranges/forward gears | 3/12 |
| Number of ranges/reverse gears | 1/4 |
| Travel speed, km/h: forward travel 1; 2; 3 range | 3,90-6,13; 8,18-12,88; 18,82-31,00 |
| Travel speed, km/h: reverse | 5,90-9,28 |
| Main gears | conical with self-locking differentials |
| Final drives | planetary |
| PTO | rear independent two-speed |
| Output shaft rotation speed, rpm | 540 and 1000 |
| Dimensions htz 17221 21 | |
| Length, mm | 6500 |
| Width, mm | 2460 |
| Height, mm | 3195 |
| Base, mm | 2860 |
| Track, mm | 1860 |
| Ground clearance, mm | 450 |
| Operating weight, kg | 9100 |
| Wheel scheme | 4x4 |
| Minimum turning radius, m | 6,6 |
| Refill containers | |
| Engine oil, l | 21 |
| Gearbox oil, l | 18 |
| Oil in drive axles, l | 54 |
| Oil in the hydraulic system of the attachment, l | 44,5 |
| Steering oil, l | 35 |
| Oil in PTO gearboxes, l | 6,8 |
| Fuel, l | 430 |
| Coolant, l | 45 |
| Coolant type | water or antifreeze |
| Traction force, kN (kgf) | |
| 40-60 (4000-6000) | |
| Brakes | |
| Stoppers - shoe blocks with a pneumatic drive for each wheel; parking – belt with pneumatic spring cylinder | |
| Rotation mechanism | |
| Hydraulic volumetric articulated steering | |
| Tires | |
| 23.1R26. Single - 4 wheels, double - 8 wheels | |
| Electrical equipment | |
| Batteries 6ST-190A - 2 pcs., voltage - 12/24 V | |
| Attachment | |
| Rear 2- and 3-point hydraulic, load capacity - 4500 kgf | |
Advantages and disadvantages
The basic advantage is unpretentiousness to operating conditions and high maintainability. An experienced mechanic will be able to return the HTZ-17221 to service very quickly if spare parts are available. The movable frame significantly reduces the load and increases maneuverability.
Tractor drivers consider the cabin, which requires improvement, to be the main drawback. To make it really warm, you need to lay an additional layer of insulation under the skin. You also need to seal the ventilation holes leading into the engine compartment. This will prevent dust from getting inside and also eliminate unpleasant odors. The windows are also positioned incorrectly. In the summer, they collect all the dust and direct it in a stream towards the tractor driver. You need to reinstall it in the opposite direction immediately after purchase.
Main technical characteristics
The engine of the German company, designed to adapt directly to a given tractor model, climatic conditions and soil characteristics of our climatic zone, sets the model apart on the market of socialized equipment. Equipped with a 180 hp engine. with a rated speed of 2200 rpm, six-cylinder, 7.4 liter volume significantly increases the technical characteristics of the KhTZ 1701. The power of the power unit allows you to cultivate the soil with semi-mounted and mounted implements at speeds of up to 14 km/h. Transport loads with full curb weight at a speed of 30 km/h. Clear snow, clean road surfaces at a speed of 40 km/h.
A single-plate clutch and an improved manual transmission with the ability to change range when loading, hydraulic volumetric steering of an articulated frame with a minimum turning radius of 6.6, a 4x4 wheel pattern and a two-cylinder hydraulic suspension system ensure ease and simplicity of operation and maintenance. The steering gear made in Italy provides comfortable control with a force of up to 2 kg on the steering wheel. The brakes are quite effective, the parking brake is manual, equipped with a pneumatically driven band cylinder, and the stopping shoe is pneumatically driven.
The engine is started by a 12-volt electric starter. This reliable circuit does not require a voltage converter. Electric torch heating of spark plugs installed directly in the engine head increases the service life of the unit and basic components. The fuel supply system effectively ensures exhaust emissions in accordance with the requirements of EURO II standards.
Modifications
The HTZ-17221 variations have no external differences. The following official varieties are currently available:
- 17221-09. It has an upgraded cabin compared to the base version, as well as a modified upholstery that makes it look slightly different.
- 17221-18, 19, 21. In this series, the additional figure means changed engine power to 180, 190 and 210 horsepower, respectively.
- Limited editions. They come off the assembly line in small batches due to their highly specialized purpose. For example, 17221-B was intended for work in swampy areas, which was possible due to the increased tire width. It is extremely difficult to establish the exact number of such variations, because they are in the nature of a private order.
Design of the HTZ 17221 tractor
The peculiarity of the line is its increased load capacity. For this purpose, the HTZ 17221 tractor is equipped with a two-cylinder device for aggregation with mounted and trailed equipment with a total weight of up to 20 tons.
The device is based on the T-150K frame. This is not a solid unit, but two half-frames united together by a hinge joint, which ultimately makes it possible to change the angle of inclination in both planes - vertical and horizontal.
In the basic configuration, the device has a YaMZ-236 diesel engine with a rotation speed of 2100 rpm and a power of 175 hp, which allows the device to be classified as traction class 3. The clutch here is a single-disc friction type. It is complemented by a 6-speed manual transmission, 2 of which are rear.
The cabin is closed, frame type and is designed for driver and passenger. It has a ventilation and heating system for operator comfort. However, inconvenience is created by another factor - noise.
Analogs
In terms of similarity of traction characteristics, flexibility of use and maintainability, the closest are the KhTZ 16131 and 17021 series, as well as the updated XTA200 and 250 different modifications produced under the Slobozhanets brand with Belarusian engines. The tracked competitor on the market is the Alltrack T402 series. There are other similar products, but they cannot compete with KhTZ-17221 in terms of energy saturation and the ratio of fuel consumption to produce one nominal unit of power.
Technical characteristics of the tractor HTZ 17221
- Engine.
- Model YaMZ-236D-3.
- Rated power, kW (hp) 128.7(175)
- Rated rotation speed, rpm 2100
- Number of cylinders, pcs. 6
- Cylinder arrangement V-shaped
- Cylinder diameter/piston stroke, mm 130/140
- Working volume, l 11.15
- Starting system electric starter
- Specific fuel consumption at rated power, g/kWh. (g/hp.h.) 251.6 (185)
- Transmission.
- Dry single-plate clutch.
- The gearbox is hydromechanical, shiftable on the fly under load within each range.
- Number of ranges/forward gears 3/12
- Number of ranges/reverse gears 1/4
- Travel speed, km/h: forward speed 1;2;3 range 3.72-5.85; 7.81-12.29; 17.96-29.60
- Travel speed, km/h: reverse 5.10-9.14
- The main gears are bevel, with a spiral tooth and a cross-axle differential
- Final drives single-stage planetary gearbox
- The rear power take-off shaft is independent, two-speed.
- Output shaft rotation speed 540 and 1000 rpm.
- Dimensions.
- Length, mm 6500
- Width, mm 2460
- Height, mm 3360
- Base, mm 2860
- Track, mm 1860
- Ground clearance, mm 450
- Operating weight, kg 8760
- Wheel layout 4x4
- Minimum turning radius, m 6.7
- Refill containers.
- Engine oil 28 liters.
- Gearbox oil 18 liters.
- The oil in the drive axles is 64 liters.
- Oil in the hydraulic system of the attachment is 46 liters.
- Steering oil 46 liters.
- The oil in the PTO gearboxes is 6.8 liters.
- Fuel 430 liters.
- Coolant 34 liters.
- Type of coolant: antifreeze.
- Other characteristics.
- Traction force, kN (kgf) 30-40 (3000-4000).
- Stopping brakes - shoe brakes with pneumatic drive on each wheel; parking – belt with pneumatic spring cylinder.
- The rotation mechanism is hydrostatic steering of an articulated frame.
- Tires 23.3R26. Single – 4 wheels, double – 8 wheels.
- Electrical equipment batteries 6ST-140A – 2 pcs., voltage – 12/24 V.
- Rear hitch 2- and 3-point hydraulic, load capacity – 4500 kgf.
selhoztehnik.com
Technical characteristics of HTZ 243K
| Engine | YaMZ-536 |
| Nominal power | 184 kW |
| Transmission | mechanical |
| Forward/reverse speed range | 3.75-33.61/5.7-10.21 km/h |
| Clutch | dry single-disc |
| Number of forward-reverse ranges/gears | 3/12-1/4 |
| Power take-off shaft (rear independent two-speed), rotation speed | 540 and 1000 rpm |
| Traction force | 40-60 kN |
| Tires | 23.1R26 |
| Attachment (rear 2-point and 3-point), load capacity | 5000 kgf |
| Base | 2860 mm |
| Track | 1860 mm |
| Dimensions (L/W/H) | 6400/2460/3460 mm |
| Ground clearance | 400 mm |
| Operating weight | 8450 kg |
| Minimum turning radius | 6.7 m |
HTZ 243K video
Reviews about HTZ 243K
The transmission unit on this model consists of a bi-directional gearbox, hydraulic mechanics, amplifiers for each bogie and a four-directional speed range, one of which operates in reverse mode. The entire assembly is adjusted by a clutch with a pair of discs.
In the wheeled version, the unit has a frame of two parts, hingedly connected with the ability to rotate in a horizontal plane. The front frame carries the engine, gearbox, cabin and refueling tank. The other part is equipped with a hinged system designed to secure tools. The rear and front axles of the tractor are driven (the rear axle can be disconnected).
The sixteen-speed manual gearbox, shiftable without interruption in the power flow within each range, provides the rational speed necessary to work with various agricultural implements and machines.
