Unfortunately, most owners of motoblocks and mini tractors do not always use them in full, and in order to mow a lawn or field, they hire other equipment. Although, it is quite possible to do this with a rotary mower. The cost of such a tool is prohibitively high, so it is much more profitable to build it yourself. We will consider how to make a rotary mower from improvised means further.
The principle of operation of the rotary mower
On the modern market for agricultural tools, there are a large number of different mowers. Rotary devices are the most popular. Due to their design, they have high performance and are easy to use both on a large tractor and on a walk-behind tractor.
The principle of operation of a rotary mower is to produce rotational movements in a rotor that has a round shape.
The rotary mower has the form of a rectangular bar, to which rotors with knives are attached. They are responsible for the correct cutting of plants.
Rotary mowers have gained great popularity due to their efficiency. The fact is that these devices use direct energy that comes from the tractor. Therefore, they do not require any specific type of energy to operate. At the same time, productivity increases several times. These mowers are used in the process of mowing grass, weeds, fallen plants, they are called not only rotary, but also rotary.
If we compare a rotary mower with alternative options, then the first one has an efficiency of more than 70%, while the others have up to 40%.
The rotary mower is attached to a transport device, which is a tractor, mini tractor or walk-behind tractor.
There are three types of such mowers, these are devices:
- trailer type;
- semi-mounted type;
- hinged type.
Rotary mowers of the first type are attached to vehicles using a three-point scheme, so it is possible to adjust the angle of inclination of the device.
Mounted mowers are ideal for working on small plots of land. The use of semi-mounted devices is recommended for large areas, and trailed rotary mowers are used for working on uneven ground.
The rotary mower has a fairly wide scope. She perfectly mows the grass for its further laying in rollers. In addition, rotary mowers are distinguished, which not only mow the grass, but also chop and collect it. The principle of operation of such a device is to cut plants, feed them to special knives, which carry out grinding, transportation in a container.
Features of rotary mowers
In general, there are several types of mowers for mini tractors or walk-behind tractors that you can build yourself. Since it is in this way that it will be possible to achieve the greatest savings in money, and at the same time get a quality tool.
Mowers that are made at home are:
- rotary;
- trailed;
- segment.
The basis for the rotary mower is a welded metal structure in the form of a frame. For its manufacture, metal corners with a standard size of 40x40 mm are required. Body sections are installed on the structure to fix the wheels. After that, you should independently choose the type of working part, which depends on the place of work of this tool.
Rotary mower photo:
The scope of use of a homemade rotary mower extends to mowing grass or lawn areas. But, keep in mind that with the help of such a mower it is recommended to mow only high grass, as it will chop low grass. To make such a mower yourself, you must have:
- chainsaw chains;
- two discs taken from a seed drill for grain.
For the manufacture of knives, use only hardened steel. Each disc should have four knives.
On each of the disks you need to drill holes for the knives, their diameter should not exceed six millimeters. Fixation of knives occurs with the help of a tavern. In this case, it is necessary to leave a small gap between the knife and the mount, its thickness should be two millimeters greater than the thickness of the blade. In addition, you should take care of installing a protective case.
Do-it-yourself rotary mower
The design of a home-made rotary mower for a mini tractor includes knives that provide grass mowing. The knives are fixed on a special disk device. A power shaft is used to provide movement. The sliding of the mower on the surface of the earth is carried out using the lower discs.
For the manufacture of a welded frame, use the corners, it is possible to use old scrap metal. To save time on making knives, use an old tractor rotor. But, in this case, in order to improve traction and make the mower more productive, the tractor rotor should be shortened by several centimeters from 2 to 4, depending on the power of the mini tractor. This mower model has a beam height of not more than 350 mm.
For self-construction of the rotor, you should take a metal sheet and cut out two circles in the form of disks from it, each with a diameter of 390 mm. To save on the purchase of a metal sheet, it is possible to use the bottom from an old barrel. In the center, legs are welded to the discs to ensure their rotation. Due to the influence of centrifugal force, the process of mowing the grass will be carried out.
Carefully monitor the strength of the fastening, in the process of welding the legs, as the connections must be as reliable as possible.
A disk taken from a peeling device is suitable as a lower support; its diameter should not exceed forty-five centimeters. An old metal pipe with a cross section of no more than three centimeters is suitable as an axial shaft. To make the structure, bearings No. 180 106 are also required. A hole should be provided on the pipe section for installing the lower bearing, a second bearing is installed on the surface of the pulleys. This requires a welded pulley.
On a pre-prepared shaft, put on a disk on which there are already knives. Then, using a welding machine, weld the pulley to the pipe. The rotation of the structure will be carried out by two bearings.
Such a model of a rotary mower is characterized by the presence of a grip of 1.10-1.15 cm, while the number of revolutions of the shaft reaches 1500 pcs. The mower should be installed and then welded onto a welded frame made of metal corners. To ensure the safety of work, care must be taken to install the casing. At the junction of the tractor and the mower, directly at the junction of the belt with the figure eight, it is recommended to install an additional bearing, which will make this connection more durable and ensure softness in the operation of the mower, in addition, the friction of the belt will be reduced.
To simplify this model of a rotary mower, the lower disk should be welded directly to the metal structure from the corner.
Tip: In the absence of skills in working with a welding machine, it is better to entrust this procedure to an experienced welder in order to avoid damage to the device and make it more durable in operation.
This model of rotary mower allows you to mow at a speed of 8-12 km per hour. With a quick mowing process, the grass will turn out to be chopped, with a slower one - whole. Such a mower is capable of cutting vegetation by 6-8 cm. It is used for mowing grass or cleaning household plots from weeds.
Homemade rotary mower from improvised materials
Materials for manufacturing:
- four wheels of the same size, with a diameter of up to 45 cm;
- two axles for mounting wheels;
- a metal sheet;
- bottom from an old metal barrel;
- four knives;
- nuts and screws for fixing knives;
- welding machine;
- chainsaw;
- a handle for control or a pipe for its manufacture.
Instead of wheels, you can use an old baby stroller with metal wheels. A chainsaw is fixed on it, which will rotate the so-called rotor.
A temporary gear from the pulleys will help to replace the tire. A metal sheet is installed on the bottom of the stroller, which must be cut with a grinder, in accordance with the size of the stroller. In addition, it is necessary to cut the bottom in the form of a disk from a metal barrel. From another barrel or improvised means, cut a casing that will have a diameter slightly larger than the disk. It is possible to manufacture an aluminum visor, which will help to lay the cut grass. A handle is used to control the mower, if there is one from a stroller, use it, otherwise, build a handle yourself. Attach knives to the disk, watch the strength of the joints. Further, all parts are assembled by welding. First, a metal sheet is attached to the stroller, then a casing is fixed on its surface and a disk is inserted into it. During the start of the chainsaw, this mechanic rotates and mows the grass.
The cost of purchased rotary mowers
The cost of a rotary mower, first of all, depends on the width of its capture. In addition, the price is affected by:
- number of rotors;
- the quality of the material used in the process of its manufacture;
- manufacturing firm;
- appointment;
- availability of additional functions;
- mower type;
- rotational speed;
- the height of the grass she mows;
- weight, etc.
The average cost of a rotary mower for a walk-behind tractor is from $ 100. At the same time, it is equipped with two rotors, has a capacity of 3500 rpm. The working width of this mower is 80 cm.
The cost of a rotary mower for a minitractor is from $300. However, it has a slightly large grip and dimensions. Also, these mowers are characterized by higher productivity and are suitable for processing medium-sized plots.
A rotary mower for a tractor is much more expensive, its average price is $ 1,500. At the same time, the capture width is doubled and even tripled. This equipment is designed to work on large areas of land.
Do-it-yourself rotary mower video:
Tractor MTZ with rotary mower
Mowers for MTZ are produced by the Belarusian Tractor Plant, as well as imported and domestic companies. Among the various models, the easiest to operate and maintain is considered rotary. In this article, we will discuss the most interesting models, consider how the rotary mower for MTZ is arranged, the positive and negative reviews of the owners about the KPH and KRR models. Videos and photos will help the reader to understand the models in more detail.
Purpose of the mower for MTZ
The rotary mower allows the owners of the MTZ tractor to perform a number of tasks: prepare hay for animal feed, remove grass before tillage or planting, maintain order along the highway and forest belt. You can find a mower in municipal, forestry. But the main use falls on agricultural complexes and private ownership.
According to the method of aggregation from the MTZ tractor, several types of rotary mowers are distinguished:
- Mounted (have a front front mount);
- Semi-mounted (attached to the side of the tractor);
- Trailed (cling to the back of the frame).
According to the method of mowing, rotary mowers can chop grass, mow and lay in even shafts, cut into mowing (leave evenly throughout the field). For farmers who need to harvest hay for livestock feed, it is more profitable to choose a model with grass laying in shafts. So it will be easier to subsequently collect it with a pitchfork and put it in stacks.
If an MTZ mower is needed to mow grass along roads or in fields before dressing them, then mulching models will be optimal. Chopped grass does not need to be removed, it will be an additional source of top dressing for cultivated plants and will make the soil lighter.
Rotary disc mowers for MTZ 80/82 tractors have high productivity and are suitable for farmers with large areas. Grass cutting is carried out by disks on which knives are located. During the movement, the discs begin to spin and the knives on the movable hinges straighten out. The discs move in different directions and the grass is cut evenly.
The disc rotary model is convenient for processing meadows with an uneven surface, as well as for swampy and weedy areas. On top of the sides, the mower is protected by a metal casing, which makes it safe to use.Models of rotary mowers
Rotary mowers for MTZ 80/82 are produced at various enterprises. The licensed model of the Belarusian Tractor Plant is called KRN (mounted rotary mower). But Chinese, Japanese, Russian manufacturers offer equipment with a similar aggregation system, and they are also suitable for MTZ 80/82 tractors. Let's take a closer look at the most popular models and reviews about them.
KRN model for MTZ
The KRN-2.1 model was developed in compliance with the norms of traditions, but at the same time, new technologies were used in the design. You can see it in more detail on the video. The video shows what the equipment looks like. On the video you can also see how the technique works. In terms of its performance indicators, KRN surpasses all known analogues, since it was developed specifically for the MTZ 80\82 tractor.
Currently, two types of KRN models 2.1 m and 2.1b are produced. They differ in set. The equipment is suitable for harvesting fallen, fresh thick grass, shrubs, weeds or residues from corn, sunflower. After the bevel, the grass is laid in an even bevel, which is then easy to dry and clean.
Of the advantages and features of the KRN stand out:
- The cutting elements have a modern protective device. It improves performance and enhances functionality. Its peculiarity is in the slope from the obstacle that has arisen by 45 degrees. Knives will not become dull and work will be uninterrupted.
- The number of knives in China is 2.1 - 8 pieces. They are made of durable steel, so they will last more than one year.
- All mowers are tested in test mode before entering the store. Therefore, products with a small marriage or shortcomings in work will not get to the buyer.
- The gearbox housing is reinforced, and the working parts are sealed.
- Suitable for tractors with power from 1.4: MTZ 80, 82, LTZ 55.
GARDEN SCOUT AGRICULTURAL MACHINERY CO.LTD has its own production line for RM-1 rotary mowers, which are supplied to Russia in large quantities and are in great demand. The factory produces about 5,000 units of mowers per month. These mounted mowers are supplied to Russia, Ukraine, Belarus and Armenia by Scout. Garden Scout Factory is one of the largest and most reliable small farm equipment suppliers in China.
The culture of production and quality control is very highly developed. A large engineering department controls the work of each assembler, develops technological maps and monitors compliance with the rules of work on the production line.
The production of mounted mowers includes a full cycle - from the undercut of gears and shafts, the molds of disks and the production of working bodies (knives). At each stage, a quality audit and control over the conveyor employees is mandatory.
The production of mower discs includes stamping metal circles from a sheet of the desired size. This is done by a huge press machine.
As a result, ready-made metal discs pass to the next stage.
Then they are stamped according to the technological map and drawings. Holes are drilled in them - landing and for working bodies.
Then the frames and discs of the mowers are transferred to the paint shop, where they go through the drying process.
Then the mowers are completed with fasteners, packed in cardboard boxes and exported. Mounting and drive elements may be different. It depends on the model of equipment for which the mower is intended. For example, for Scout tractors, this rotary mower is equipped with hydraulic hoses and a hydraulic cylinder. For heavy diesel walk-behind tractors - with special fasteners.
There are several other factories in China that produce this mower model, but their quality is very low due to the lack of production culture and quality control. Beware of fakes!
And motoblocks help to make life much easier for all farmers: from small farms to powerful agricultural holdings. The main advantage of the tractor is the ability to use trailed and mounted equipment for various jobs. For example, for mowing or for preparing the field for sowing, various types are used.
Purpose of the mechanism
Mowers- these are mechanisms that have a wide range of tasks in agriculture and public utilities: harvesting, harvesting, preparing the field for arable land, mowing park and house gardens, cleaning along roadsides. Due to the high performance, simplicity and reliability of the design, rotary-type devices are most widely used.
Did you know? The first mowing device was invented by an English textile foreman, Edwin Beard Bading. He got this idea from a mechanism for trimming fringes from rolls of fabric.
The mechanism of this unit is quite simple: several disks are mounted on a metal frame (beam), several knives (usually from 2 to 8) are mounted on hinged disks, which, when the disks rotate, turn around and cut the grass. Knives are made from hardened steel. Since the design is quite simple, this type is easy to maintain and, if necessary, can be repaired independently.
Types of rotary mowers
There are several classifications of mowers. Depending on the method of mowing, they are divided into:
- cutting grass into a slope (leave evenly over the area of the field);
- mulching (chopping);
- stacking the cut grass into swaths.
- hinged;
- trailed.
Features of the design and principle of operation of the mounted mower
Attachments for tractors do not have their own chassis, they can have one or more support wheels, but only a small part of the weight is transferred to them. Therefore, these are usually mechanisms of relatively low weight and performance. 
The mounted rotary mower is easily connected to the PTO and is easy to operate and maintain. These units are used to process small areas, although they can also be used in the fields. Comfortable when working on uneven terrain. This is the most popular type of mower for users and mini tractors. 
How the trailer mechanism works
The trailed mower consists of a frame frame resting on pneumatic wheels. Cutting elements (discs with knives attached to them) are attached to the frame frame with sprengels and traction mechanisms. Also on the frame are the levers for controlling the transmission mechanisms. The third point of support is the beam of the tractor.
Did you know? The rotary mower device was invented in Australia at the beginning of the 20th century.
Trailed units, in comparison with mounted units, as a rule, have a larger working grip, require more power and, accordingly, are more productive. They are used in large fields. 
How to install a mower on a tractor
Before installing the implement on the tractor, check all connections and tighten all bolts. Then, in case of installation, the links of the tractor hitch are connected to the connecting axles of the frame of the equipment to be installed. When installing a trailed mower, respectively, use a trailer mechanism. Then the drive (cardan shaft, gear, belt or bevel gear, hydraulic drive) is connected to the tractor PTO. 
If there are hydraulic devices that provide vertical and horizontal movement of the mower, they are connected to the outputs of the hydraulic system of the base unit.
Important! Before starting work, it is necessary to make sure that the protective covers are installed securely and to check the idling operation.
When choosing a rotary mower for a tractor or walk-behind tractor, the following factors should be taken into account:
- types of vegetation: for harvesting plants with a hard thick stem, a more powerful unit is needed;
- size and topography of the cultivated field: for fields of a large area with complex terrain, trailed models are preferable;
- mowing purpose: during the primary processing of the field, it is better to take a model, while harvesting fodder hay - laying the hay in rolls;
- price: equipment of European, American or Japanese manufacturers is of high quality, but expensive; a Chinese product can be bought inexpensively, but the quality is not guaranteed; domestic products occupy an intermediate position and at the same time benefit from the availability of spare parts.
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