BusinessAgriculture

Mulchers: advice on choosing

When there is a problem in clearing abandoned areas from vegetation, chopping crop residues on the field or pruning trees in the garden, the choice of equipment is extremely clear, since there are no other machines providing the same level of productivity, versatility and safety as mulchers or choppers driven by the shaft of the selection Capacity of the tractor. The characteristics of these machines make them an ideal and cost-effective solution for farmers who need to cut and chop high grass, grapevine, shrubs and tree branches, and perform other similar tasks on the farm.

If the decision to purchase a mulcher is taken, it is necessary to make the following, perhaps, more important choice in favor of this or that model. Starting from various types of knives and ending with the type of drive, manufacturers produce many varieties and models, seeking to meet the individual needs of users. To help you figure out all the options and choose the right model without overpaying excess money, some tips on this topic will be given below.

First of all.

Before you start choosing a mulcher, you need to determine what it will be used for. These machines can be attached to the rear or front of the tractor, and some models have the possibility of dual use. For example, by installing shredders on the front linkage of tractors, it is possible to install deep loosers on the rear weigher and perform two operations in one pass: grinding the plant residues with loosening and sealing them into the soil. Therefore, first of all, it is necessary to answer the question whether a shredder with universal application is needed or it can be limited to a machine for the front or rear tractor hitch, in addition it will help to determine the suitable model of the tractor itself.

Selection of the type of knives.

After determining the type of work for the mulcher, it's time to think about the choice of working organs. It is best to choose between movable hammers and fixed teeth. Two types of these knives are mounted on rotors of different types and can not be interchangeable, so it is very important to choose the most suitable type.

Movable hammers, which are pivotally connected to the rotor by means of rods, use centrifugal force for a powerful cutting impact. Unfortunately, some people have a bad opinion about this kind of knives because of negative experience in the past. However, many of these problems have already been successfully solved in modern machine models. Another problem of machines with mobile hammers was maintenance and repair. In the early models of mulchers, each row of hammers was located on a common rod, so to replace one hammer it was necessary to replace the entire row. Also, great difficulties were with the replacement of the rotor itself due to corrosion, damage or wear. Independently located hammers in modern models allow you to remove the old one and put it in a few minutes even in the field.

The main advantage of movable hammers is their design, which allows you to go with a stone or a thick tree trunk to leave the hammer back, and not stay still and lock the rotor. This feature makes the machines suitable for use by inexperienced operators. Also machines with this type of knife are ideal for tractors with a power of less than 100 hp. And for grinding material with a diameter of less than 15 cm.

Another type of knives are fixed teeth, which are fixedly mounted on the rotor at the optimum cutting angle. This type of rotor is recommended for working with heavy-duty tractors for grinding branches with a diameter of more than 15 cm. There are several varieties of such teeth having a similar design and made of carbide materials. The advantages of such knives are the strength and economic benefit of using, based on a long service life. They are designed taking into account the contact with the stones and do not require sharpening. However, the underside of such a knife has a rounded top that does not allow you to work as fast as with knives with sharp edges.

One of the types of fixed teeth are hardened steel plates that have sharp edges that allow the material to be grinded more efficiently than other types of knives. In addition, machines with such knives require less energy for full grinding.

Other options.

After selecting the blades, you should consider the components of the grinding chamber. Most manufacturers install counter-knives that are welded inside the case for better grinding, but there are also additional options in the form of a cutting beam. This increases the efficiency of grinding, reduces the size of the crushed particles and prevents the plugging of the chamber by plant debris and roots.

Other types of options are the pushing frame and the rear flap with adjustment. The pushing frame is supplied both with a mechanical and hydraulic drive and serves to tilt standing trees when grinding. The rear flap can also be mechanically or hydraulically adjustable and is necessary to select the distance over which the shredded material is spread.

The final options that can be equipped with mulchers are associated with the drive system. This can be a system for automatically adjusting the tension of the drive belts or a double drive for tractors with a capacity exceeding 125 hp.

Increased interest in mulchers in recent years is due to their unique versatility, performance, reliability, safety and ease of operation. With the right selection of options, you can successfully mow and crush almost any material. The tips given above will help you understand the large selection of models in the market and clear all obstacles on your way.

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