{"id":549,"date":"2026-07-21T05:36:40","date_gmt":"2026-07-21T05:36:40","guid":{"rendered":"https:\/\/soil-stabiliser.com\/?p=549"},"modified":"2026-07-21T05:36:40","modified_gmt":"2026-07-21T05:36:40","slug":"what-is-a-tractor-stone-crusher-and-how-does-it-work","status":"publish","type":"post","link":"https:\/\/soil-stabiliser.com\/ja\/what-is-a-tractor-stone-crusher-and-how-does-it-work\/","title":{"rendered":"\u30c8\u30e9\u30af\u30bf\u30fc\u5f0f\u7815\u77f3\u6a5f\u3068\u306f\u4f55\u304b\u3001\u305d\u3057\u3066\u3069\u306e\u3088\u3046\u306b\u52d5\u4f5c\u3059\u308b\u306e\u304b\uff1f"},"content":{"rendered":"


\n\"Tractor<\/p>\n

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If you farm or contract on land where stones are a recurring problem, a tractor stone crusher is one of the most practical investments you can make. Stones damage tillage equipment, reduce seedbed quality, slow harvest operations, and complicate road and foundation preparation. A tractor stone crusher eliminates these problems permanently \u2014 in a single pass, without removing material from the field.<\/p>\n

This guide explains what a tractor stone crusher is, how it works mechanically, what different machines can process, and how to understand the key specifications before you buy.<\/p>\n<\/div>\n

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\n
\u3053\u306e\u30ac\u30a4\u30c9\u3067\u306f<\/div>\n
What is a tractor stone crusher?<\/span>
\nHow does it work?<\/span>
\nKey components<\/span>
\nStone size & working depth<\/span>
\nStone crusher vs mulcher<\/span>
\nWhere they are used<\/span>
\n\u3088\u304f\u3042\u308b\u8cea\u554f<\/span><\/div>\n<\/div>\n

<\/p>\n

What Is a Tractor Stone Crusher?<\/h2>\n
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A tractor stone crusher \u2014 also called a PTO stone crusher<\/strong> or \u30c8\u30e9\u30af\u30bf\u30fc\u5f0f\u77f3\u7834\u7815\u6a5f<\/strong> \u2014 is a rear-mounted implement attached to a tractor via the standard three-point linkage system. It is powered directly by the tractor’s power take-off (PTO) shaft, which drives a high-speed rotor inside the machine housing.<\/p>\n

Unlike industrial jaw crushers or impact crushers used in quarrying, a tractor stone crusher is designed for in-situ operation<\/strong>. It does not collect or remove stones \u2014 instead, it pulverises them into small fragments and returns the material directly to the soil in the same pass. The result is a clean, stone-free seedbed or working surface without the cost and logistics of stone collection, loading, and removal.<\/p>\n

Tractor stone crushers are widely used across European agriculture, civil contracting, and infrastructure maintenance \u2014 from vineyard and orchard preparation to road sub-base treatment and large-scale land clearing. For a broader overview of stone crusher types, see this stone crusher reference guide<\/a>.<\/p>\n

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70\u2013400hp<\/div>\n
Tractor power range<\/div>\n<\/div>\n
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500mm<\/div>\n
Max stone diameter<\/div>\n<\/div>\n
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250mm<\/div>\n
Max working depth<\/div>\n<\/div>\n
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1 Pass<\/div>\n
Stone eliminated in-situ<\/div>\n<\/div>\n<\/div>\n

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How Does a Tractor Stone Crusher Work?<\/h2>\n
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The operating principle is straightforward, but the engineering behind it is precise. Here is the full sequence from tractor PTO to finished surface:<\/p>\n

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01<\/div>\n
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PTO Power Transfer<\/div>\n

The tractor’s PTO shaft \u2014 running at 540rpm or 1000rpm depending on the model \u2014 connects to the crusher’s input shaft. Rotational power is transmitted through a drive belt or gearbox to the rotor. Drive components are engineered to handle the high shock loads generated by stone impact during operation.<\/p>\n<\/div>\n<\/div>\n

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02<\/div>\n
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Rotor Rotation<\/div>\n

The rotor spins at high speed inside the armoured housing. Hardened, replaceable teeth are fixed across its full working width. Rotor diameter determines kinetic energy \u2014 450mm for light-duty, 550mm mid-range, 700mm heavy-duty \u2014 and therefore the maximum stone size the machine can process.<\/p>\n<\/div>\n<\/div>\n

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03<\/div>\n
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Stone Impact & Pulverisation<\/div>\n

As the machine moves forward, rotor teeth penetrate the soil and strike stones with high-force impact. The stone is fractured repeatedly between the rotor teeth and fixed counter-teeth inside the housing until reduced to a size small enough to pass through the rear discharge.<\/p>\n<\/div>\n<\/div>\n

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04<\/div>\n
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Material Redistribution<\/div>\n

Crushed stone fragments and soil are discharged from the rear and redistributed evenly across the surface \u2014 incorporated back into the soil profile. No collection, no removal, no additional handling required.<\/p>\n<\/div>\n<\/div>\n

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05<\/div>\n
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Rear Roller Finish<\/div>\n

A rear packer roller follows the rotor and consolidates the treated surface, leaving a level, even finish ready for the next field operation \u2014 drilling, planting, or further ground preparation.<\/p>\n<\/div>\n<\/div>\n<\/div>\n


\n\"Tractor<\/p>\n

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Key Components Explained<\/h2>\n
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Understanding the main components helps you compare models and assess long-term operating costs before buying:<\/p>\n

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Rotor<\/div>\n

The central working element. A larger rotor diameter means more kinetic energy and the ability to process larger stones. Rotor size is the primary differentiator between light-duty (450mm), mid-range (550mm), and heavy-duty (700mm) machines.<\/p>\n<\/div>\n

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Rotor Teeth<\/div>\n

Hardened steel teeth are the primary wear components, designed to be replaced individually without removing the rotor. Tooth count varies by working width \u2014 more teeth give a finer finish and lower per-tooth load during operation.<\/p>\n<\/div>\n

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Counter-teeth & Armour<\/div>\n

Fixed inside the housing, these provide the opposing surface against which stones are shattered. Their geometry determines how efficiently stones are broken down before being discharged from the rear of the machine.<\/p>\n<\/div>\n

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PTO Input Shaft<\/div>\n

Connects the tractor to the machine. ST variants accept both 540rpm and 1000rpm PTO outputs for broad tractor compatibility. DT and HP variants require 1000rpm. Always confirm PTO speed compatibility before ordering.<\/p>\n<\/div>\n

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Three-point Linkage<\/div>\n

Category 2 rear linkage is standard on most models, compatible with tractors from 70hp upward. Confirm your tractor’s linkage category and rear lift capacity against the machine weight before purchase.<\/p>\n<\/div>\n

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Rear Packer Roller<\/div>\n

Follows the rotor and consolidates the treated surface after each pass, leaving a level finish and helping regulate working depth across uneven terrain.<\/p>\n<\/div>\n<\/div>\n

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What Stones Can a Tractor Stone Crusher Process?<\/h2>\n
<\/div>\n

The maximum shredding diameter \u2014 the largest stone a machine can reliably process \u2014 varies significantly across the range and is directly related to rotor size and tractor power:<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n
SPECIFICATION<\/th>\nLight-duty<\/th>\nMid-range<\/th>\nHeavy-duty<\/th>\n<\/tr>\n<\/thead>\n
Performance & Power<\/td>\n<\/tr>\n
Tractor power (hp)<\/td>\n70 \u2013 150<\/td>\n80 \u2013 280<\/td>\n280 \u2013 400<\/td>\n<\/tr>\n
Rotor diameter (mm)<\/td>\n450<\/td>\n550<\/td>\n700<\/td>\n<\/tr>\n
Max shredding diameter (mm)<\/td>\n150<\/td>\n300<\/td>\n500<\/td>\n<\/tr>\n
Max working depth (mm)<\/td>\n150<\/td>\n200<\/td>\n250<\/td>\n<\/tr>\n
Working widths (mm)<\/td>\n1,110\u20132,070<\/td>\n1,340\u20132,304<\/td>\n2,080\u20132,560<\/td>\n<\/tr>\n
Best For<\/td>\n<\/tr>\n
Typical application<\/td>\nVineyards, orchards, arable farms<\/td>\nLarge arable, road prep, contracting<\/td>\nCivil works, heavy contracting, land reclamation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

<\/p>\n

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\ud83d\udca1 Buying Tip<\/div>\n

For most European arable and vineyard applications, stones up to 150mm are the norm \u2014 the light-duty series is the right starting point. Where larger embedded rocks are common (post-glacial soils, former quarry land, or road construction), step up to mid-range or heavy-duty. Contact our team with your soil type and stone conditions \u2014 we’ll recommend the right series.<\/p>\n<\/div>\n

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Stone Crusher vs Mulcher: What Is the Difference?<\/h2>\n
<\/div>\n

This is one of the most common points of confusion when buying field preparation machinery. Both are rotor-driven PTO implements that attach to a tractor’s rear linkage \u2014 but they are engineered for completely different tasks and are not interchangeable<\/strong>.<\/p>\n

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\ud83e\udea8 Stone Crusher<\/div>\n