Crusher bucket CBF series

What is a crusher bucket, and how does it work?

In construction terms, a crusher bucket is a piece of equipment designed to be installed on an excavator, wheel loader, or other operating machine. It is used to immediately transform inert waste into reusable material.

CM‘s CBF crusher bucket is designed to crush materials such as concrete, rubble, bricks, asphalt and mixed inert materials from demolition directly on site, but it also excels at recovering processing waste—granite, marble, natural stone, or oversized ceramics—which can be immediately reintroduced into the production cycle without waste.

Similarly, it allows natural rocks, river stones, and hard mountain materials to be valorised, transforming them on site into reusable material for sub-bases, fillings and stabilisations.

The material is loaded into the crushing chamber and, thanks to a jaw crusher system operated by the machine’s hydraulic system, is reduced to the set size. The material is discharged from the bottom of the bucket, ready to be reused as road sub-base, fill material, or for other on-site uses.

Unlike a fixed plant, a crusher bucket works exactly where the inert waste is generated: there is no need to load the material onto trucks, transport it to a landfill or an external crushing plant, and then purchase new material to bring back to the construction site. This is where the main competitive advantage of CM’s CBF series lies.

CBF crusher buckets vs traditional crushers

A traditional crushing plant requires dedicated space, foundations, energy connections and logistics for delivering and collecting material. CBF jaw crusher buckets, on the other hand, are designed to work on dynamic, often complex construction sites where access with heavy vehicles is difficult or inconvenient.

With a crusher bucket mounted on an excavator or wheel loader, the equipment can be moved to where it is needed: narrow yards, internal courtyards, historic centres, road works or tunnels. The machine that already handles the material also becomes the crushing plant, reducing the number of vehicles required and the number of intermediate steps.

Advantages of the CBF crusher bucket on site

The operational and management advantages of a CBF crusher bucket are tangible from the very first use. In addition to eliminating disposal and transport costs, the company finds itself managing a more streamlined workflow: what is needed is produced on site, when it is needed.

In organisational terms, this translates into:

• less dependence on suppliers;
• more flexible scheduling of demolition and reconstruction phases;
• reduction in downtime associated with waiting for materials.

The same operational benefits of the CBF crusher bucket also extend to natural materials such as granite, marble, basalt, river stones, and hard mountain stones.

Crushing directly on site allows you to immediately obtain reusable material for sub-bases, drainage and filling, without having to purchase external material; every piece of rock extracted from the quarry or recovered on site is valorised, minimising waste; it allows you to work in difficult areas without having to mobilise traditional equipment, maintaining a constant production flow.

In the stone, marble, granite, ceramic, or similar materials manufacturing sector, the CBF crusher bucket offers an additional advantage: it integrates waste recovery directly into the production process. Every stage of processing generates oversized parts, scraps and residues. With the CBF, these scraps can be:

• crushed immediately,
• reused as a component of the new mixture, as a base or as technical material,
• reintroduced into the production cycle instead of becoming waste to be disposed of.

The result is a closed cycle that is more economical, more sustainable, and less dependent on the purchase of new material. From an environmental point of view, the use of crusher buckets such as the CBF reduces transport-related emissions, significantly reduces the number of lorry journeys, and limits the volume of waste to be disposed of. Even in public tenders or contracts where sustainability scores are increasingly important, the use of a crusher bucket can become a distinctive feature of the bid.

Fields of application for the CBF crusher buckets

The CBF series has been developed to work in a wide range of contexts. From urban demolition to infrastructure works, CM crushing buckets can operate in open contexts as well as in complex or confined environments.

They are particularly suitable for:

• demolition with inert material recovery in urban areas, where reducing transport is essential;
• quarries and mines, for the volumetric reduction of extracted or waste material;
• road construction sites, for crushing milled material, ballast, and sub-base materials;
• tunnels and underground ducts, where space is limited, and logistics are complex;
• construction work, green maintenance, agricultural/forestry contexts, recycling, and road works.

In these environments, a CBF series crusher bucket demonstrates its ability to work in difficult conditions while maintaining consistent performance and high reliability.

CBF crusher bucket series: models and compatibility with operating machines

The CBF range includes various models of crusher buckets sized for excavators from approximately 7 to 45 tonnes, all with an output size adjustment from 20 to 140 mm. Choosing the right model is essential for achieving maximum performance, and CM supports the customer in the selection process based on:

• tonnage and configuration of the excavator;
• flow rate and pressure of the hydraulic system;
• type of materials to be crushed.

Each CBF crusher bucket model is designed to offer an optimal balance between equipment weight, load capacity, inlet opening, and crushing chamber geometry. This allows the operating machine to work safely, without overloading the system, and to maintain fast cycles in all conditions.

Construction features of the CBF crusher bucket

One of the strengths of the CBF series is its robust construction. The crusher bucket is made of highly wear-resistant materials – HARDOX 450, capable of withstanding continuous impact with abrasive aggregates and maintaining its geometry over time, even under heavy working conditions.

The crushing components are optimised to ensure high performance and uniform distribution of stress. The areas subject to the most stress are appropriately reinforced, while the elements subject to wear can be easily replaced to reduce machine downtime.

Another key aspect is the focus on maintenance: easily accessible lubrication points, protected hydraulic circuits, overpressure protection, and clamping adjustment systems help to keep the crusher bucket efficient over time. This translates into controlled operating costs and greater operational availability.

Options, buckets with magnets, and customisations

The CBF series can be configured with various options to adapt to specific site requirements. The available equipment includes, for example, a misting kit for dust containment during crushing: a simple and effective solution to improve operating comfort and comply with regulatory limits in residential areas or indoors. An excavation tooth kit is also available to facilitate penetration of hard ground.

In many demolition contexts, it is essential to separate iron from concrete. For this reason, CM offers the possibility of transforming the CBF series into magnetic buckets that allow the recovery of rods, brackets, and metal inserts while the inert material is crushed, further simplifying recycling operations. The iron separator is supplied complete with support and installation kit, making the CBF series a ready-to-use magnetic bucket.

How to choose the most suitable CBF crusher bucket

Choosing the right crusher bucket means starting with an accurate assessment of the fleet of machines and the sites where you work. In the case of excavators, it is essential to consider the operating weight, front-end configuration, flow rate, and pressure of the hydraulic system. The right choice ensures stability, productivity, and comfort for the operator.

The second fundamental aspect is the material to be crushed: reinforced concrete, natural stone, demolition waste, asphalt, or softer materials behave differently when crushed. CM supports the customer in defining the ideal combination of CBF model, machine settings, and desired grain size.

Finally, the logistics of the construction site must be considered: available space, loading and unloading methods, material route, and integration with any other equipment for screening and material handling. CM’s consultative approach allows us to identify the most effective solution, both in technical and economic terms.

Request a personalised consultation on your crusher bucket!

Every construction site has its own specific characteristics, and every operating machine has its own features: this is why choosing a crusher bucket cannot be improvised. By contacting CM Srl, you can consult with a technical team capable of assessing your operational needs, type of materials, frequency of use, and productivity objectives, proposing the most suitable crusher bucket and the best combination of optional extras.

Request more information, advice, or a personalised quote now: the CBF and CBF-L series and the electric front loader are designed to transform your waste aggregates into a resource, improving the efficiency of your work and the competitiveness of your business.