Specifications
The Belarus 921 tractor meets all European standards and has the following characteristics:
- Unit width 1.55 m, length 4.5 m, height 2.35 m
- Distance between wheels 1.37 m
- Height from chassis to ground surface 0.31 m
- Tractor weight 3.8 tons
- Tank capacity up to 100 liters of fuel
- Rear power take-off shaft
- Rear differential lock
Engine operation
The uninterrupted operation of the tractor is ensured by a diesel engine with an intermediate air cooling function. The developers of the Minsk Motor Plant equipped it with four cylinders and a semi-separate combustion chamber. The rotation speed reaches two thousand revolutions per minute.
Tractor MTZ 921 Belarus
Trailed sprayer 3200 liters, boom 24 meters GASPARDO
The MTZ 921 tractor is positioned as a gardening tractor. The main difference between the 921 Belarus is the low-profile cabin. With such a cabin you can easily enter the barn. The tractor is equipped with an economical turbocharged diesel engine that meets EURO-2 standards.
Differences between MTZ 921 and 900 series
Distinctive features from the 900 series tractors are: installation of a 4-cylinder diesel engine with a power of 95 hp on the tractor. meeting EURO 2 environmental standards; front drive axle with a wheel steering angle of 55°; shortened sleeves and axle shafts of the rear axle; hydraulic system units with a hydraulic lift, cable control of the hydraulic lift and distributor; cabin with shaped bent profiles and laminated glass, molded upholstery of the cabin interior; plastic - hood, cab roof and rear fenders; mounted system with two vertical hydraulic cylinders; fuel tank; side control panel and hanging clutch and brake pedals; instrument panel combined with the steering column, etc.
Engine
| 921 | 921.2 | 921.3 | ||
| Type | turbocharged diesel | diesel engine with turbocharging and intercooling | ||
| Model | D-245.5 | D-245.5S | D-245.5 S2 | |
| Power, kW (hp) | 65(89) | 65(89) | 70(95) | |
| Rated crankshaft rotation speed, rpm | 1800 | 1800 | 1800 | |
| Number of cylinders, pcs | 4 | 4 | 4 | |
| Working volume, l | 4,75 | 4,75 | 4,75 | |
| Maximum torque, Nm (kgf m) | 397 (38,5) | 397 (38,5) | 451 (43,7) | |
| Torque reserve coefficient, | 15 | 15 | 20 | |
| Fuel tank capacity, l | 95 | 95 | 95 | |
The MTZ 921 tractor is equipped with a highly economical, easy-to-use and maintain four-cylinder turbocharged engine manufactured by the Minsk Motor Plant. It is possible to install an engine that ensures compliance with the second stage of European environmental requirements. The comfortable, safety cabin with tinted glass provides good visibility and low noise levels. All tractor controls are located in convenient areas.
Transmission
| Clutch | dry, single disc |
| Clutch control | hydrostatic |
| Transmission | mechanical, stepped |
| Number of gears: forward/reverse | 18/4 |
| Travel speed, km/h: forward backward | 1,8-35 4,1-11,5 |
| Rear PTO: independent I, rpm independent II, rpm synchronous, rpm travel | 540 1000 3,4 |
Changing the speed from slow (1.8 km/h) to maximum transport (35 km/h) forward is provided by 16 steps in the gearbox. Accordingly - reverse gear from 4.5 to 7 km/h - in 4 steps. This allows you to select any agrotechnical speed of movement of the units depending on the type of work performed. Speeds are switched easily using synchronizers. Control is carried out by one gear lever.
When the traction of the rear wheels with the soil decreases or the traction force increases, the front drive axle is automatically connected, which allows the full weight of the tractor to be used as a coupling axle, and, therefore, ensures high traction power. Hydrostatic steering ensures ease and simplicity of tractor control when performing any work. The hydraulic lift provides power, positional and mixed methods of automatic adjustment of the rear linkage.
To improve traction and grip qualities, a mechanical differential lock is provided. Rear axle differential lock: with electrohydraulic control, has three operating modes: lock off; the locking is turned on with automatic shutdown when the front wheels are turned at an angle of more than 13 º; blocking is forced. The locking clutch is a dry multi-disc clutch. On request - multi-disc, operating in an oil bath.
For agricultural machines with active drive, a rear power take-off shaft is installed. The rear PTO has two independent rotation speeds of 540 and 1000 rpm and two synchronous rotation speeds of 2.3 and 4.2 rpm.
Dimensions and weight
| Length with PNU and ZNU, mm | 4500 |
| Width, mm | 1550 |
| Cabin height, mm | 2350 |
| Tractor base, mm | 2370 |
| Track, mm: along the front wheels along the rear wheels | 1250, 1350, 1450 1160-1600 |
| Ground clearance, mm under the front axle under the rear axle | 310 250 |
| Smallest turning radius, m | 3,5 |
| Operating weight, kg | 3800 |
| Tire sizes (standard): front wheels rear wheels | 265/70R16 420/70R24 |
Hydraulic suspension system
| Universal, separate-modular, with a hydraulic lift, providing power, combined and height adjustment of the position of the implement. | |
| Load capacity on the axis of the lower link joints, kN (kgf) | 40(4000) |
| Maximum pressure, kgf/cm² | 200 |
| Pump capacity, l/min | 45 |
| Oil tank capacity, l | 30 |
The MTZ 921 tractor has excellent technical performance, despite its relatively small size. That is why on the Internet recently you can so often come across the request for MTZ 921 price and MTZ 921 buy . Thanks to the introduction of new technologies, the tractor has become significantly more durable and more economical than its predecessors. In other words, its labor productivity has increased, and the cost of maintenance has decreased, because MTZ engineers corrected errors and shortcomings that were used on tractors of earlier models.
MTZ 921 is excellent for use both for agricultural purposes and for public works. For example, it can serve as a carrier of heavy loads. However, the main task of the tractor is to perform gardening work. Thanks to this, on the MTZ 921, the price of which will please anyone, you can adapt a wide range of attachments for one or another type of work.
Speaking about the technical characteristics of the tractor, the following features can be noted. The engineers provided for the installation of towing devices that allow the MTZ 921 to be aggregated with other agricultural complexes and even machines. For example, for semi-mounted and mounted machines, a rear linkage (NU-2) with a load capacity of 4000 kgf is intended. The front linkage has a lifting capacity of 1500 kgf.
The tractor's power is 95 horsepower, which allows it to be classified in class 1.4. The tractor has proven itself in operation both in industry and agriculture. Often, work is carried out on it to cultivate vineyards and orchards.
Despite its relatively small size and low power, the MTZ 921 tractor will be an excellent gardener’s assistant and will significantly increase labor productivity by speeding up the work process. In addition, the small size is an advantage rather than a disadvantage of the tractor, since the small wheelbase, as well as the compact but at the same time comfortable cabin, allow the tractor to freely maneuver even on small plots of land, which is especially important when operating in gardens, etc. d.
Distinctive features of the tractor:
The tractor has a front drive axle with the ability to rotate the wheels by 55°, and is equipped with shortened axle shafts and rear axle sleeves.
- Fuel tank, increased strength;
- Thanks to the hydraulic booster, driving the machine has become even easier and more convenient;
- The tractor control panel is located on the side;
- The tractor is equipped with suspended brake pedals and clutches;
- The Belarus MTZ 921 tractor is equipped with a four-cylinder engine, which is easy to repair, operate, and is also unpretentious to operate in any weather conditions. The engineers did not overlook the environmental factor. Thanks to improved engine operation, the amount of exhaust gases has been significantly reduced;
- A separate-unit system with a hydraulic lift allows for a wide range of adjustments when working with additional equipment;
- The comfortable cabin provides not only convenience when driving and working behind the tractor, but also has increased safety, excellent visibility and tinted windows. The heating system will prevent the driver from freezing even in cold weather.
Device and equipment
The technical characteristics of the MTZ 921 tractor are supported not only by a powerful engine, but also by such components as:
- Transmission. Has 18 forward and 4 reverse gears. Hydrostatic control type. Equipped with a dry clutch with a single disc. Extremely simple operation with one lever.
- Hydraulic suspension system. A traction-mounted mechanism for attaching additional implements, which can easily adjust the level of pressure of agricultural mechanisms and raise them to the desired height.
- The 16-speed gearbox provides a smooth transition of speeds for optimal soil cultivation.
- Equipped with a main disc brake and an additional parking brake.
- The single cabin is quite comfortable and successfully meets all sanitary and hygienic standards. For the driver's convenience, there is a sun canopy, electric air filtration purifiers, heating, a sunroof in the upper part, wipers with washers, and a control panel in the side. The large volume of glazing significantly increases the viewing angle of the machine operator.
- The front axle is driving. Equipped with five studs, conical type. Has three operating modes: on, on constantly, on when wheels slip
- Fuel consumption 226 g/kW per hour
- It is equipped with a small trailer, milling cutter, sprayer, plow, harrow.
Cabin MTZ 921
Advantages and disadvantages
Competent design discoveries equipped the unit with the following number of advantages:
- Reduced dimensions
- Lower center of gravity
- Highly environmentally friendly engine
- Universal hinged mechanism
- Comfortable cabin
The disadvantages include the inability to perform heavy work due to the low weight of the tractor.
MTZ 921 with attachments
Features of operation
The MTZ-920 tractor and the 921st version are widely used largely thanks to the engine, which is economical in diesel fuel consumption and maintenance.
In addition, owners are offered the rational opportunity to retrofit MTZ tractors with the necessary components and optional mechanisms: air conditioning, oil bath brakes, a cab awning, a hydraulic hook, an additional seat, axle ballasts, a device for the rear linkage, a creeper, and a device for doubling wheels.
MTZ 920 at work
Service
MTZ tractors consume diesel fuel; its grade is regulated by the manufacturer depending on the operating season and climatic conditions of the area. SAE-30, SAE-40, SAE-50 class oil is used as motor oil in summer; SAE-20 oil is used in winter at extremely low temperatures.
