How to make a rotary mower yourself

Features of rotary mowers

In general, there are several types of mowers for mini tractors or tillers 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 high-quality tool.

Mowers that are made at home are:

  • rotary;
  • trailed;
  • segmental.

Homemade Rotary Mower (Part 1)

The basis for a rotary mower is a metal welded structure in the form of a frame. For its manufacture, the presence of metal corners with a standard size of 40×40 mm is 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

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 tall grass, since it will chop low grass. To make such a mower yourself, you need:

  • chainsaw gear chains;
  • two discs removed from the seed drill.

Use only hardened steel for knives. Each disc must have four knives.

Holes for knives must be drilled on each of the discs; their diameter should not exceed six millimeters. The knives are fixed using a shank. 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..

Rotary mower with your own hands

The design of a home-made rotary mower for a mini tractor includes knives that ensure mowing of grass. The knives are fixed on a special disk device. A power shaft is used to provide movement. Sliding the mower on the surface of the ground is carried out using the lower discs.

For the manufacture of a welded frame, use corners, it is possible to use old scrap metal. To save time on making knives, use an old rotor from a tractor. But, in this case, in order to improve traction and make the mower more efficient, the tractor rotor should be shortened by a few centimeters from 2 to 4, depending on the power of the minitractor. This mower model has a cant height of no 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, ensuring 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 during the welding of the legs, since the connections must be as reliable as possible.

A disc 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 manufacture the structure, the presence of bearings 80 106 is also required. A hole should be provided in 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 the previously prepared shaft, put on the disc, which already has knives. Then, using a welder, weld the pulley to the pipe. Rotation of the structure will be carried out by two bearings.

This model of a rotary mower is characterized by the presence of a grip of 1.10-1.15 cm, while the number of shaft revolutions reaches 1500 pieces. The mower should be installed and then welded onto a welded frame made of metal corners. To ensure safe operation, care must be taken to install the cover. It is recommended to install an additional bearing at the junction of the tractor and the mower, directly at the point where the belt is connected to the figure eight, which will make this connection more durable and provide 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 disc 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 a rotary mower allows mowing at a speed of 8-12 km per hour. A fast mowing process will crumble the grass, a slower one. holistic. Such a mower is able to cut vegetation by 6-8 cm.It is used for mowing grass or removing weeds from household plots..

The principle of operation of a rotary mower

There are a wide variety of mowers on the market for agricultural tools today. It is the rotary devices that are most popular. Thanks to their design, they have high productivity and are easy to use both on a large tractor and on a trailer..

The principle of operation of a rotary mower is to produce rotary 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. It is they who are responsible for the correct cutting of plants..

Rotary mowers have become very popular due to their economy. The fact is that these devices use direct energy that comes from the tractor. Therefore, they do not need to generate a certain type of energy for their work. At the same time, productivity increases several times. These mowers are used in the process of mowing grass, weeds, lodged plants, they are called not only rotary, but also rotary.

If we compare a rotary mower with alternative options, then the first one. Efficiency is more than 70%, while others have up to 40%.

The rotary mower is attached to a transport device, which is a tractor, mini tractor or tiller.

There are three types of such mowers, these are devices:

  • trailed type;
  • semi-mounted type;
  • mounted type.

Rotary mowers of the first type are attached to the transport using a three-point scheme, so there is a possibility of adjusting 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 on huge areas, and trailed rotary mowers are used to work on uneven ground.

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The rotary mower has a fairly wide range of applications. She perfectly mows the grass for its further laying in the 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 consists in cutting plants, feeding them to special knives, which carry out shredding, transportation in a container..

Homemade rotary mower from scrap materials

Materials for making:

  • four wheels of the same size, up to 45 cm in diameter;
  • two axles for mounting wheels;
  • a metal sheet;
  • the bottom of an old metal barrel;
  • four knives;
  • nuts and screws for fixing knives;
  • welding machine;
  • chainsaw;
  • handle for control or pipe for making it.

Instead of wheels, it is possible to use an old baby carriage with metal wheels. A chainsaw is fixed on it, which will rotate the so-called rotor.

A temporary transfer from the pulleys will help to replace the tire. A metal sheet is installed on the lower part of the stroller, which must be cut out with an angle grinder, in accordance with the dimensions of the stroller. In addition, it is necessary to cut the bottom in the form of a disc from a metal barrel. Cut out a casing from another barrel or improvised means, which will have a diameter slightly larger than the disc. It is possible to manufacture an aluminum canopy that 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, make sure the connections are tight. 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 disc is inserted into it. During the start of the chainsaw, this mechanic rotates and mows the grass.


Unfortunately, most owners of trailers and mini tractors do not always use them to their full extent, and in order to mow the 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. How to make a rotary mower from improvised means, we will consider further.

  • The principle of operation of a rotary mower
  • Features of rotary mowers
  • Rotary mower with your own hands
  • Homemade rotary mower from scrap materials
  • The cost of purchased rotary mowers

The cost of a rotary mower, first of all, depends on its working width. In addition, the price is influenced by:

  • number of rotors;
  • the quality of the material used in the manufacturing process;
  • 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 tiller is from 100. At the same time, it is equipped with two rotors, has a capacity of 3500 rpm. The working width of such a mower is 80 cm.

The cost of a rotary mower for a minitractor is from 300 At the same time, it has a slightly large grip and dimensions. Also, such mowers are characterized by higher productivity and are suitable for processing medium-sized areas..

A rotary mower for a tractor is much more expensive, its average price is 1500. At the same time, the working width is doubled or even tripled. This equipment is designed to work on large areas of land.

How to make a rotary mower with your own hands

The rotary mower is selected taking into account the characteristics of the cultivated land. Models for a tiller and a mini tractor differ in transportation methods, dimensions, functionality. Any rotary lawn mower is designed for mowing grass.

Model range of units

Rotary tiller mower can be presented in the form of the following models:

  • Zarya. installed using a gearbox and additional brackets. The device is used for mowing grass, small shrubs and grain. The width of the structure is 70-80 cm. If necessary, the device is used when processing stony soil;
  • “Dawn 1”. used for soil cultivation in a hard-to-reach place;
  • “KNS-0.8 Strizh”. allows you to mow grass 2 m high;
  • “KM-0.5”. compact model with a cutting width of 50 cm.

Models of rotary mowers for mini tractors:

  • Z083 MINI. designed for mowing grass in a large area. This model is not used on mountainous terrain;
  • DM 135. Mows and mows the grass. The model is equipped with 8 knives;
  • “KP-2.1M”. mounted rotary mower for mini tractors allows you to work the land with solid objects;
  • Z-069 Wirax. Polish model, with which you can process a large area. The grass is mowed and laid in swaths;
  • KRN-2.1B. mows the grass in a difficult area;
  • SB-1200. semi-mounted model of Czech production. With this mobile structure, you can repeat the topography of the soil.

Pictured Mower for tractor Z-069 Wirax

Homemade devices

If necessary, you can make a rotary mower for a tiller and a mini tractor with your own hands. To make equipment for a tiller, you will need a welding machine, fittings, tape measure, metal corners.

The frame of a homemade rotary mower for a tiller is made of metal corners (4×4 cm). Then the bearings are installed. The next step is to manufacture the working part of the apparatus.

The resulting structure will chop small grass and mow tall weeds. Do-it-yourself Neva rotary mower for a tiller is made from 2 discs taken from a seeder, a gearbox and a chain from a chainsaw.

Each disc will require 4 knives. Cutting elements are made of hardened metal. To install them, drill holes with a diameter of 6 mm. The cutting elements are fixed to the tiller with a shank. At the same time, the gap between these elements is maintained (1-2 mm).

This design ensures fast mowing of grass.

In the photo, a Simple rotary mower for a tractor with your own hands

During the work of the tiller with a rotary mower, it is possible to rotate the knives by 360 degrees.

The axis of the apparatus is made of carbon steel with a diameter of more than 8 mm. To make the knives move freely, the axle is tightened with a disc. The discs are mounted on the frame, linking them to the drive. The discs must rotate opposite each other (to ensure that they are folded into rows of cut grass).

Rotary Mower Specifications

Experts classify the units under consideration into the following types:

  • devices that mow and lay grass in swaths;
  • devices that mow and lay grass in windrows;
  • rotary mowers for tiller, which mow and chop the grass.

Some models submerge, flatten the grass while mowing and laying in the swath. Taking into account the method of installation, experts distinguish such devices as trailed, semi-mounted and rotary mounted mower.

The device in question consists of a rear, front and side cutting system. Apparatus with 1, 2, 3 or 5 bars are installed on the tractor. The rotor scythe is launched by the action of the shaft or the wheels of the tractor.

In the photo Rotary mower for a mini tractor

The considered units are installed on the tractor and tiller in a horizontal position. The knife and connecting rod must move in the same plane. For work on a small plot of land, a Polish tractor mower is used. Front mounted model divides the land into corrals.

Before buying a rotary mower for a tiller, the principle of its operation is studied. If it is necessary to mow sown high-yielding and lodged grasses, weeds, then a rotary apparatus is used. Such a mower fixes itself to the tiller or tractor. The equipment consists of a bar to which the knives are attached.

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The device with a grinder consists of a rotor, frame, drive mechanism, pipeline. The principle of operation of a rotary mower on a tiller: when the machinery moves, the vegetation is tilted with a shield, then mowed with a knife. The grass rises, is crushed, falling into the container.

If it is necessary to quickly cultivate the land, then a Polish mower for a tractor or tiller with several cutting elements is used. Experts recommend buying such devices taking into account the following criteria:

  • cutting height of the grass;
  • performance;
  • knife speed.

Plus a rotary mower for a mini tractor. the presence of a damping device that protects the knife from various obstacles. Experts refer to the additional advantages of the device:

  • easy to operate;
  • high security;
  • saving time.

Additional work

To improve the tiller, you can make an adapter yourself. This small trailer functions as a cab with the option to mount a mounted rotary mower. the tiller is controlled by turning the knobs. The handlebar length is taken into account before the adapter is manufactured. The axle of the trailer is made of suspension elements of a sidecar from a motorcycle. Experts recommend making an axle from a steel angle 40x40x2. Square pipes are welded to reinforce the adapter.

A homemade rotary mower for a mini tractor is made by hand using old iron batteries and a barrel. The device consists of cutting elements, a casing and a frame. The rotary mower slides on the ground with the lower discs.

In the photo do-it-yourself mower for a tiller

To make a frame, 40 cm corners are used. The unit is equipped with knives from an old rotary mower. If a Polish model is used, then it is necessary to shorten it by 3 cm.Otherwise, there will not be enough traction for the mini tractor.

2 disks with a diameter of 39 cm are cut out of a metal sheet 4 mm thick. Knives are fixed to them (they must rotate freely). In the process of movement, under the influence of centrifugal force, the cutting elements will mow the grass.

For the manufacture of the lower supports, discs from a cultivator (diameter 45 cm) are used. The shafts can be made from a metal tube with a diameter of 30 mm. The device is equipped with 2 bearings:

  • the first is installed in the pipe;
  • second. in welded pulley.

A disc and knives are put on the shaft. The pulleys are welded to the pipe. The resulting structure allows you to capture an area 110-115 cm wide. In this case, the shaft rotation is equal to 1400. A casing is mounted on the apparatus. At the junction of the mower with a mini tractor, it is recommended to install a bearing to extend the life of the belt.
To simplify the design, experts advise welding the lower disc to the frame. Unit speed. 10 km / h At the same time, the grass is cut with a height of 5 cm.The resulting rotary mower is used for harvesting corn.

Rotary mowers their device

Rotary mowers are the most popular and convenient equipment in terms of performance. The working part of the structure is a disc with rotating floating knives.

Effective for mowing tall grass, clearing wastelands. Moving knives do a good job with rough weed stems. If you want to make a mowing machine out of a chainsaw, there is no need to doubt – the unit is great for re-equipment, and it is easy to transform it back.

A saw blade for wood is suitable as a material for knives. Sharpened metal prongs can also be used.

Preparation of tools and spare parts

The popular domestic models – “Ural”, “Druzhba”, are perfect for the task. Additionally you will need:

  • metal corner for making a rigid frame;
  • metal plate for the platform;
  • two wheels – from a cart or stroller;
  • rotor discs (one or two, depending on the modification) or mounting rail;
  • a piece of pipe with a diameter of 5 cm;
  • bearing and gear for mating with the pipe;
  • metal knives from saw blades for wood;
  • fittings – bolts, nuts, staples, rivets, etc..

How to make a mower from a chainsaw

The easiest way is to figure out how to make a mowing machine with your own hands, using the example of refitting a chainsaw.

What to Consider When Assembling a Segment Mower

A metal bar is used as the basis for the structure, to which two knives are attached – an upper and a lower one. When assembling, take into account the width of each segment and make sure that the distance between the elements is the same. The smooth and synchronous operation of the equipment depends on it..

The sequence of actions is as follows:

  • Each knife segment is attached to a bar.
  • Install pressure brackets.
  • To adjust the cutting height of the grass, two support runners are provided.
  • In the center or from one of the sides (depending on the selected design), install the drive lever, the bracket for attaching the mower to the drive and the drive itself.
  • Provides metal protection for the working part of the mower.
  • Connect the mower to the tiller.
  • The drive is protected by a casing or a standard box.
  • For control, a throttle system with an on / off lever and speed adjustment is used.

A special feature is the principle of operation of knives, based on the counter-translational movement of the upper and lower “blades”. One of the canvases is connected to the power take-off shaft of the tiller. The torque is transmitted to the drive box, where the eccentric mechanism is converted into a reciprocating motion of the mower’s drive arm.

The lower blade is not adjustable, and the design of the upper blade provides for the possibility of changing the distance between the knives. A clearance of 0.5 mm is considered optimal. This will prevent the grass from getting stuck between the knives. For a high-quality cut, it is necessary to ensure that the knives are well sharpened..

Segment homemade mowing machine operation

What types of mowers can you make yourself

Motor-driven mechanical grass mowers fall into two main groups:

  • rotary;
  • segmental.

How to properly assemble a rotary mower on a tiller

Rotary mowers have important advantages:

  • high efficiency, reaching 70% (this also applies to mowers based on a chainsaw);
  • when mounted on a self-propelled tiller or mini tractor, the mowing speed is 8-12 km / h;
  • the cut grass is laid in a swath, and it is convenient to collect it in swaths;
  • floating knives are less blunt and do not break when in contact with obstacles (uneven soil, stones);
  • the ability to mount additional knives that chop the grass.

The rotary mower is connected to the tiller in various ways:

  • semi-mounted – the device is equipped with a support wheel;
  • hinged – attached to the tiller body;
  • trailed – the mower is point-to-point connected to the vehicle and has its own wheelbase.

It is easiest to assemble a mounted mower with your own hands. Metal corners for the frame, pipes and plates are used. It is important to carry out anti-corrosion treatment. Step-by-step assembly instructions:

  • Prepare knives that are attached to the discs. Three cutting elements are sufficient per rotor. Be sure to control the strength of the connection while maintaining the mobility of the knives. When hitting an obstacle, they will fold and will not break. A metal rivet is preferred over twisting with bolts and nuts. You can also use knives and discs from a small combine, lawn mower or other equipment.
  • For the lower support, a small-section metal pipe is used, which is equipped with a bearing. The second bearing is connected to the pulley.
  • Weld the pipe and pulley so that the bearings remain in working order and set the rotors in motion.
  • A rigid welded frame is made, for which a metal corner is suitable.
  • Weld the mower to the frame.
  • Next, connect the mower to the tiller. It is recommended to mount a shock absorber to avoid hard surface contact.
  • The junction of the drive belt with the PTO gear is protected by a cover.
  • Mount the mower on / off lever and the throttle control cable.
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Rotary mower for tractor

How to make a mowing machine with your own hands – step-by-step instructions and ideas for craftsmen

Mechanization of work greatly simplifies the maintenance of a personal or small farm. The limiting factor that prompts the use of manual labor is the high cost of equipment. However, many accessories can be assembled by yourself. Making a DIY mower is a great way to make it easier to provide green forage for livestock or manage weeds. For manufacturing, you will need parts and assemblies available in almost any household.

  • What types of mowers can you make yourself
  • Rotary mowers their device
  • The device and purpose of segment mowers
  • How to make a mower from a chainsaw
  • Preparation of tools and spare parts
  • Video assembly guide
  • How to properly assemble a rotary mower on a tiller
  • What to Consider When Assembling a Segment Mower
  • How to make an electric drill-based mower
  • How to choose knives for different types of mowers
  • Homemade mower for tiller, characteristics and description

    Usually, home-made mowers for a tiller, construct a frontal type: a rotary mower, a segment mower and a carriage mower.

    The welded frame is the basis for the segment and rotary mowers. It is made from metal corners, 4×4 cm in size. For the wheel axle, the bearing housings are mounted on the frame. Then the working part of the mower of the selected type is made.

    Homemade rotary mower for tiller

    A home-made rotary mower on a tiller is used for mowing grass for hay and for mowing a lawn. If the grass is small, then the mower will simply chop it, and the tall grass will be mowed.

    Consider a model made for the Neva Tiller and similar models. We use two discs from the grain seeder, and from the chainsaw – a chain and a gearbox. One disc requires four knives. They are made from hardened metal. To install them, holes with a diameter of six millimeters are drilled on each disc with a carbide drill. Using a shredder, we attach the knives to the discs. We also keep the gap between the knife and the shank, which is 1-2 mm more than the thickness of the knife itself..

    Thanks to this, the centrifugal force, when rotating, will straighten the knives from the disc, and they will mow the grass. At the same time, it should be possible to rotate the knives 360 degrees, which is done for greater safety of the knives when they collide with something solid.
    Strong carbon steel is used to make the axle to which the knives will be mounted. The diameter of the axle must be at least eight millimeters. In order for the knives to have free movement, you need to tighten the axle with a disc until it stops..

    These two discs are mounted on a welded frame and communicate with the PTO drive. The rotation of the discs should occur towards each other, which will allow the mowed grass to be folded into rows.

    Homemade mower for tiller (rotary, segment)

    To facilitate the physical labor of a person on a personal plot, more than a hundred different sheds to the tiller are offered. But not everyone can afford to buy such equipment, because its cost is not cheap. The article describes a homemade tiller mower, the pros and cons of popular designs.

    When assembling such a mower, the most important thing is to get a safe and high-quality model. To make a mower for a tiller with their own hands, they usually use improvised units from agricultural machinery. After all, the main goal pursued by the creators of a homemade mower is to save money and achieve maximum results. Some models that ordinary gardeners come up with often surprise professionals with their idea and simplicity of design..

    Homemade segment mower for tiller

    Such a segmented mower for a tiller is made of metal beams 15x50x120. They need to drill 12 holes so that their dimensions fit the M8 bolts. In the future, a guide rail (89 cm) with teeth and knives will be attached to these bolts. Knives are installed on both sides of the timber.

    Runners and clamps are attached from both ends of the timber. A wheel is attached to the main frame, which can be removed from an unnecessary stroller. Under the influence of the PTO of the tiller, the cutting part of the mower starts to work. This can be seen in more detail in the figure:

    main welded frame (1), braces (2), gear wheel (3), fixing and adjustment of the braking system (4), pawl for fixing the brake (5), main arches (6 and 8), articulated body (7), leg (9), fuel line (10), regulator valve (11), container for gasoline (12), handle (13), levers (14 and 17), latching mechanism (15), fastening bolt (16), throttle control lever ( 18), clamp (19), engine muffler (20), engine (21), fixing hardware (22), fairing (23), cutting blades (24 and 25), cover (26), slide (27), element fixation (28), knife frame (29), rod (30), pin (31), plates for holding the lower and upper parts (32 and 33).

    The mower, assembled according to this drawing, easily mows the grass. This homemade mower can be seen in action in the video..

    How to connect a homemade mower to a tiller

    A manually assembled mower will not produce the desired result if it is not correctly attached to the tiller. There are certain rules to follow when installing the mower..

    First of all, you need to put the tiller in reverse mode. Before attaching to the PTO shaft, a connecting unit is placed in the hitch socket. Using a king pin with a spring, you need to lock the connection. The absence of a spring will lead to a malfunction of the trailer mechanism..

    For greater safety, cover the mower blades with a protective cover. Tiller wheels contain weights to aid in soil cultivation. Since they are not necessary when mowing grass, they should be removed. Cutting grass with the mower should be started at the lowest speed. No need to rush when cornering and make them smoothly.
    If you assembled a mower for a tiller with your own hands, first of all, its work should be safe..

    Homemade rotary mower

    When a home-made mower is connected to the tiller and it works, then quite high revolutions of the discs with knives are achieved. In the event of a breakdown of the mount, you or people around you may be injured. Therefore, first, think about whether you have enough skill to make such a device. After all, it will be much cheaper to purchase a ready-made mower for a tiller than medicines and treatment of crippled organs or nerves..