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Agricultural machinery: Ripper

Agricultural machinery: Ripper


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Classification - Structure

Tools not applied to the power take-off

The ripper, also known by the name of subsoiler or scarifier, is a newly developed agricultural tool, in fact it allows only the vertical cutting of the soil in depth (even up to a meter), this does not involve the mixing of the soil layers as it happens instead with plowing or milling but it keeps the soil profile unchanged; the ripper is therefore considered a descissor tool. It is a tool brought by the tractor, applied by attaching it to the 3 points of the hydraulic lift, even if there are very large and heavy variants, for deep jobs that are equipped with wheels, however applied to the lift, they therefore fall into the category of semi-mounted tools. The ripper is made up of a very sturdy metal frame to which usually 1.3 or 5 working parts are applied which are made up of large and long metal knives inclined slightly forward, obviously the larger the knives are, the greater the number. the power of the tractor must be high, the re-chucking is in fact a process that requires the delivery of almost all the power of the tractor. There are on the market tools made up of plows and subsoilers mounted on the same frame, with this only one process is carried out, called araripuntatura instead of two distinct processes; the presence of the subsoiler associated with that of the plow allows to break the working sole created by the plow's share. Finally, there are variants of the subsoilers that are equipped with vibrating knives connected to the power take-off by means of a universal joint, these teeth are made to vibrate by the energy released by the power take-off and go to move the soil in depth, however they cannot work at high depths .

Operation carried out

The job that the ripper does is to cut the ground vertically, a ground that has been worked with the subsoiler is externally very similar to how it was before being worked, you can hardly notice the grooves where the knife passed; if instead we go to analyze the soil in the "fertile layer" or in the first 40-60 centimeters we will notice that the soil has been moved deeply but not on the surface bringing obvious benefits to the crop that will be planted.

The subsoiling according to the working depth can be essentially of 2 types:

- Subsoiling for herbaceous crops: carried out on land that will host a herbaceous crop such as cereals, seed and pasture crops, it is usually carried out at a depth of no more than 50-60 centimeters.

- Repacking for arboreal crops: carried out on a ground that will host an arboreal type crop such as orchards and vineyards, a real burglary is carried out in depth usually up to 1 meter, therefore requires a tractor of great power.

Light 5-organ ripper (up to 40-60 cm)


1-organ burglar ripper (up to 1 meter)

Deep pitting - Light pitting


Video: Trying out the new subsoiler ripper (May 2022).