Self-propelled grain harvester KZS-812 “PALESSE GS812”

The Polesie KZS 812 model is a classic single-drum mid-category combine harvester with a 4-key straw walker and a 1200 mm thresher. Low operating costs and reliable design have made the equipment very popular among farms with low and medium yields. By using motors of different power and headers of different widths, the manufacturer was able to take into account the needs of customers with different processing volumes and field yields. Additional adapters significantly expanded the functionality of the Palesse 812 and made it possible to use the equipment for harvesting various crops, reducing the payback period and increasing the load.

The production of Polesie KZS 812 combine harvesters is carried out by the Belarusian company, located in Gomel. The company's products are characterized by good harvesting speed, unpretentiousness, ease of movement and endurance. The new combine comes with a 2-year warranty.

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Currently, JSC Gomselmash is one of the largest factories producing agricultural machinery in the post-Soviet space. During the period of perestroika, the enterprise managed to survive, despite the ruin of the industry. Serial production of combine harvesters began in the late 1990s. New models of the brand made it possible to replace old modifications of Don and Niva equipment at minimal cost. At the same time, the export of cars outside the country began. The company launched joint production of combine harvesters in Tatarstan, China, Kazakhstan and Russia.

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The Polesie KZS 812 series is considered one of the most successful in the line of Gomselmash JSC. The model is very popular in Belarus. It is also sold in Russia, Kazakhstan, China, Argentina, Ukraine and some Eastern European countries.

The Palesse KZS 812 model belongs to the fourth class and is used in simple and complex harvesting conditions. The machine is distinguished by high harvesting speed, quiet operation and high-quality grinding.

The main purpose of the combine is separate, direct harvesting of cereals, cereals, cereal crops or grass seeds in fields with a maximum slope of up to 8 degrees. Polesie KZS 812 carries out even cutting, threshing, cleaning, separation, accumulates grain in a bunker and subsequently unloads it. The non-grain part of the crop is harvested using machinery by placing it in windrows or evenly scattering it across the field.

Polesie KZS 812 represents budget-class equipment and is optimally suited for small businesses with small needs.

Specifications

Dimensions:

• length – 10500 mm;
• width – 6500 mm;
• height – 4500 mm.

The mass of the combine with the header is 13860 kg.

Performance characteristics:

• throughput – 8 kg/sec;
• grain collection productivity – 12 t/hour;
• threshing drum width – 1200 mm;
• drum rotation speed – 510-870 rpm;
• separation area – 4.92 sq.m;
• area of ​​cleaning sieves – 3.86 sq.m;
• length of straw walker keys – 4100 mm;
• loading height – 3800 mm;
• Hopper capacity – 5500 l;
• header working width – 5000, 6000 or 7000 mm;
• pick-up working width – 3400 mm.

The transport speed of the equipment can reach 20 km/h, the operating speed is 8 km/h.

Self-propelled grain harvester KZS-812 “PALESSE GS812”

The PALESSE GS812 middle-class combine is designed for wide application. The compact and maneuverable combine is designed for a throughput of at least 8 kg/s and is capable of producing at least 12 tons of bunker grain per hour. It belongs to the widely recognized type of combine harvester with one threshing drum, beater and straw walker. This scheme, in addition to high technological reliability, ensures versatility of use and ease of maintenance. A comfortable cabin, components from the best manufacturers, electronic controls and controls complement the advantages of the classic design. PALESSE GS812 reaches the maximum level of efficiency in fields with yields of up to 40 c/ha.

The combine harvests the non-grain part of the crop according to the following technological schemes:

— chopping and spreading straw across the field;

— laying straw in a windrow.

The combine harvester is equipped as standard with a grain header with a working width of 6 m. The following can be supplied as options:

— grain headers with a working width of 5 and 7 m;

— grain pick-up with a working width of 3.4 m;

— a device for harvesting rapeseed PR-6 with a working width of 6 meters;

— a set of equipment KOK-6-3 with a 6-row header for harvesting corn for grain;

— headers for harvesting grain and soybeans ZhZS-6 and ZhZS-7 with a working width of 6 and 7 meters, respectively;

— 8-row reaper for sunflower harvesting NASH-873-05 produced by Unisibmash LLC (Novosibirsk).

The PALESSE GS812 combine is certified for compliance with the requirements of the European Union with the right to apply markings.

The threshing drum of the largest possible diameter provides the PALESSE GS812 with optimal conditions for high-quality threshing. A separate pre-threshing device relieves the drum from overloads that could lead to damage to the grain.

Four straw walker keys with seven stages, a three-stage cleaning system with a sieve area of ​​about 4 m2 - optimal solutions for a middle-class combine.

The threshing drum drive is designed for maximum loads. A device for automatically tensioning the belt when increasing torque increases the productivity of the combine.

The Comfort Max cabin offers excellent visibility, a comfortable adjustable work chair and an additional seat for an assistant, and careful ergonomic design of the controls.

PALESSE GS812 combines are equipped as standard with an automatic monitoring and control system based on an on-board computer, air conditioning and a refrigerated box.

The efficient operation of all working systems of the combine is ensured by the MMZ engine with a power of 210 hp. The upper platform of the combine is equipped for safe and convenient maintenance of the motor unit.

A sample of bunker grain can be taken directly from the cabin platform.

Chop and scatter straw across the field as fertilizer or place it in windrows for subsequent collection and use - the PALESSE GS812 combine provides both modes of harvesting the non-grain part of the crop.

ADVANTAGES

1. The noise-vibration-proof sealed double cabin with panoramic glass is equipped with air conditioning (a heater can be installed upon request) and a refrigeration box.

2. Monitoring, management and operational adjustments of working bodies and units, performed using an on-board computer, improve the quality of cleaning and reduce unproductive time.

3. The knife of the header cutting apparatus is driven by a reinforced angular transmission. The planetary gear stage ensures ideal linear reciprocating movement of the knife.

4. The cutting apparatus uses steel stamped-welded fingers, which ensure free movement of the knife with a force of no more than 250N.

5. The high speed of movement of the knife allows you to increase the operating speed of the combine and, accordingly, productivity without loss of cut quality.

6. The reel rake tubes are reinforced and made without connecting pins, which prevents winding.

7. The reel has steel strips, which, if damaged, can be dismantled for replacement or straightening.

8. A high-inertia threshing drum of the largest possible diameter and a concave with a wrap angle of 130° provide conditions for high-quality threshing, including on high-stemmed, twisted and clogged grains.

9. The emergency concave release device allows you to quickly eliminate clogging and restore threshing stability.

10. An autonomous rotary-type post-threshing device relieves the threshing drum from overloads that could lead to damage to the grain.

11. The concave clearance, reel speed, cleaning fan speed, and opening/closing of the grain bin roof flaps are controlled remotely (from the cab).

12. The presence of seven cascades (height changes) on each straw walker key improves the separation of grain from the straw heap, increases productivity and reduces losses.

13. The sieve mill is equipped with an additional third sieve, which improves the quality of grain cleaning.

HEADERS

PALESSE grain harvesters are equipped with Super Cut headers of various working widths, which makes the use of combines effective for different yields. The best engineering solutions, recognized as a standard in world practice, ensure stable and efficient operation of the headers, regardless of the set of crops and harvesting conditions.

Durable stamp-welded fingers increase the reliability of the cutting apparatus. The system of pairwise alternation of segments (cut up - cut down) gives an exceptionally clean cut, including when the stems are wet, and ensures self-cleaning of the cutting apparatus.

The use of a Schumacher planetary gearbox to drive the cutting apparatus of the header ensures a high linear speed of movement of the knife (1.71 m/s) and a high cutting frequency (1180 strokes/min) with smooth running and minimal wear. This allows you to increase the operating speed of combines and thereby increase their productivity.

The actuator, controlled from the cabin, allows you to smoothly change the rotation speed of the reel, quickly controlling the intensity of the grain mass flow. This ensures an even supply of mass to the thresher, increasing the stability and quality of threshing.

A simple and reliable hydromechanical mechanism for longitudinal-transverse copying Field Profile allows you to effectively use the entire working width of the header. The same low cut is ensured regardless of field unevenness.

Upon request, the headers can be equipped with an electro-hydraulic Auto Contour copying system.

Harvesting dead, wet grain is a more serious test for a harvester. PALESSE headers are ready for extreme harvesting conditions. The computer sets the cutting height, the stem lifters confidently lift the stems from the ground, and the double cutting edge cleanly cuts stems of any moisture content.

All models of PALESSE combines include transport trolleys for the headers as standard. They help you quickly get to the field on public roads and easily mount the header directly in the field without additional accessories.

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Engine

The Palesse KZS 812 combine harvester is available with 2 engine options:

1. Diesel engine YaMZ-238DE with a V-shaped cylinder arrangement (manufacturer: Yaroslavl Motor Plant). The unit has high performance and economic characteristics and complies with the Euro-1 environmental class. The engine is equipped with a turbocharging system. Consumers speak of the YaMZ-238DE motor as an “almost eternal” unit, capable of withstanding long-term operation in the most difficult conditions.

Characteristics of YaMZ-238DE:

• working volume – 14.85 l;
• rated power – 169 (230) kW (hp);
• maximum torque – 1274 Nm;
• rated speed – 2100 rpm;
• operational life - 0.8-1 million km;
• number of cylinders – 8.

2. Diesel unit D-260.4 with gas turbine supercharging, intermediate cooling of charge air and liquid cooling. The engine has an in-line cylinder arrangement and is designed for use in temperature conditions from -45 to +40 degrees.

Characteristics of the D-260.4 motor:

• working volume – 7.12 l;
• rated power – 154 (210) kW (hp);
• maximum torque – 807.5 Nm;
• rated speed – 2100 rpm;
• compression ratio – 16;
• specific fuel consumption – 227 (167) g/kW per hour (g/hp per hour);
• number of cylinders – 6.

The combine's fuel tank capacity is 500 liters.

Design and service features

The Palesse KZS 812 combine received a design typical for grain harvesting machines of this class, consisting of a loading hopper, a thresher and an operator’s cabin. The separation process was ensured by a 4-key cascade-type straw walker.

The chassis of the equipment was created to work in stressful conditions. When other combines could not cope with the assigned tasks, Polesie KZS 812 continued to harvest the crop. Optionally, the equipment was equipped with caterpillar tracks with reliable reinforcement, allowing operation in high humidity conditions.

Working bodies of the Polesie KZS 812 model:

• an inclined chamber that evenly feeds the grain mass and ensures stable threshing. The use of hydraulic pneumatic accumulators as part of the hydraulic cylinders for lowering/raising the feeder chamber reduces the risk of damage to the header and feeder chamber and improves the quality of grain collection.
• a reliable header, which, together with the feeder chamber, is protected from mechanical damage by hydropneumatic accumulators. In the latest modifications, the header has the function of copying the ground relief;
• The 3-stage cleaning system is optimal for a mid-class model. The rotation speed of the cleaning fan is controlled by the operator from the cab;
• a thresher with an inertial drum, providing high-quality harvesting of crops with medium straw content in conditions of normal humidity. The latest modifications of Polesie KZS 812 are equipped with a Big Drum threshing apparatus with an 800 mm high-inertia drum, providing high throughput. The concave clearance that is optimal for threshing can be adjusted directly from the cab. The emergency concave release mechanism quickly eliminates clogging of the element and restores the stability of threshing. An autonomous pre-threshing device eliminates overloading of the threshing drum and extends the service life of the equipment;
• planetary gearbox with a cutting frequency of 1100 strokes/min. The mechanism allows for a smooth and clean cut with minimal wear on the structure. During the cleaning process, the cutting elements self-clean, improving the quality of work.

Polissya KZS 812 is equipped with a large all-metal cabin. The operator practically does not get tired when working on the combine; this is facilitated by the following features:

• adjustable driver's seat, which can be adjusted to fit any type of combine operator;
• panoramic glazing allows you to constantly monitor the operation of equipment;
• The on-board computer eliminates the occurrence of emergency situations. When the engine starts, the computer automatically checks the integrity of the main systems and their correct operation. When problems are detected, the combine operator receives an alert to prevent the situation from worsening. Automatic adjustment of the parameters of the working elements (the degree of opening of the sieve blinds, the size of the threshing gap, the force of air cleaning, the threshing drum, etc.) is carried out taking into account the state of the crop being harvested and external factors. Such adjustment increases operational efficiency and minimizes costs;
• Sealing and sound insulation provide increased operator comfort. The cabin is also equipped with a refrigerated box and air conditioning (a heater is optionally available).

The Polesie KZS 812 combine harvester is easy to maintain. The most problematic parts of this model are the hydraulic pump system and the header elements, which require careful maintenance. There are usually no difficulties in purchasing spare parts and consumables for them, since they are available in any specialized store. Individual elements can be replaced with parts from other brands.

Palesse KZS 812 is a reliable and affordable combine harvester that will be an ideal assistant for a small enterprise or farm.

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The grain harvester KZS-812 “PALESSE GS812” is a classic middle-class single-drum combine with a 1200 mm wide thresher and a four-key straw walker. A reliable technological scheme and low operating costs make PALESSE GS812 the optimal solution for farms with low and medium grain yields.

The use of engines of different power in the combine, the use of headers of different working widths makes it possible to take into account the interests of farms that differ from each other in field yields and production volumes. The use of special adapters for harvesting different crops expands the capabilities of the PALESSE GS812, increases the annual load and reduces the payback period.

The Big Drum threshing apparatus with a high-inertia drum with a diameter of 800 mm gives excellent results when harvesting in conditions of normal humidity and average straw content, providing high throughput of the combine.

The concave clearance required for optimal threshing is adjusted by an electric mechanism controlled from the cab.

The large-volume cabin, with panoramic glass, equipped with air conditioning, and a fully adjustable operator’s seat – this is real comfort at a high level. When started, the on-board computer automatically checks the circuits of sensors and mechanisms for serviceability, provides viewing of a diagram with circuit numbers and tips for troubleshooting.

Automatic adjustment of the working elements (threshing gap, speed of the threshing drum and cleaning fan, degree of opening of the sieve blinds) is carried out by a computer based on the crop being harvested and its condition.

The planetary gearbox used to drive the cutting apparatus of the header provides a high cutting frequency (1108 strokes/min) with smooth operation and minimal wear, increasing productivity. The cutting device with durable stamp-welded fingers with upper and lower cutting edges, with an up/down system of alternating segments, gives an exceptionally clean cut and ensures self-cleaning.