Screening bucket CDS series

CDS Series: Key Features

The CDS series screening bucket by CM Srl was developed to provide a reliable solution where many similar attachments slow down when working with wet or moist materials. Its technological core is the rotor/disc system, which allows screening and crushing in a single pass, ensuring a steady material flow and minimizing clogging.

The ergonomic coupling design and the robust structure reduce vibrations and stress. At the same time, the internal positioning of the hydraulic motors and valves protects sensitive components from direct exposure to impacts and debris.

The CDS range includes multiple sizes to cover carrier machines from light to medium-heavy segments. The series extends from models for compact machines up to excavators over 30 tons, maintaining the same build philosophy and product advantages throughout.

Structure and Materials

The CDS series is built for strength and easy maintenance. The chain drive system, centralized greasing points, and simplified servicing ensure long work cycles with minimal downtime. Internal scrapers come as standard to keep the rotors clean and prevent material buildup — a crucial feature when working with wet soil, peat, or mixed materials.

Model Range and Capacity

The CDS series covers multiple carrier weight classes and offers varying bucket widths, capacities, and hydraulic flow requirements. Indicatively: operating pressures up to 250 bar, typical flow rates from 30 to 150 l/min depending on the model, and configurations with 2, 3, or 4 rotors. This allows operators to choose the bucket according to the machine’s actual hydraulic output and the type of material to be processed — with no compromise on productivity or reliability.

Performance in Challenging Conditions

Where most selector buckets lose efficiency, the CDS maintains high productivity thanks to its rotor kinematics and the combined screening and crushing action. Working with wet materials is no longer an exception to manage, but a normal condition: the bucket is designed to keep material flowing and renew the screening bed continuously, reducing clogging and downtime.

Ideal Applications for the CDS Selector Bucket

The screening bucket is not a “niche” attachment — on modern job sites, it’s often a key tool for completing on-site processing and avoiding unnecessary material transport. The CDS series excels in both pre-screening and finishing operations, in construction as well as environmental applications.

In recycling and demolition waste management, the bucket separates fine fractions from oversized debris, improving disposal efficiency and keeping site logistics organized. In demolition and excavation work, it helps sort inert materials for trench backfilling, pipe bedding, and trench covering. In quarries and mines, it assists with preliminary material separation or oversize cleaning.

In agriculture and forestry, the disc rotor system is ideal for aerating soil, processing peat, mixing soil improvers and compost, and even shredding light branches for faster green waste management. In tunnels or enclosed environments, the low noise level and controlled material handling prevent dispersion and potential safety issues.

Accessories and Options for the CDS Series

Customization is a key factor in getting the most out of a screening bucket. The CDS offers a range of options and attachments to suit most carrier machines:

• Tooth kit – improves material penetration, especially in tough or compacted soils where the bucket blade alone cannot dig effectively.
  
• Rear scrapers – for specific operating conditions, helping to keep the rotors clean and prevent downtime.
  
• Dedicated couplings – available for skid steer loaders, backhoe loaders, wheel loaders, and telescopic handlers, in addition to excavators.

The protection of hydraulic components and the absence of a drainage line (where designed) make installation easier on mixed fleets and reduce setup time. Rotor kits — for screening, medium-light crushing, and medium-heavy crushing — cover the full range of typical applications, with configurations available in 16 / 25 / 40 / 60 mm.

Why Choose the CDS: What Makes the Difference

When evaluating a screening bucket for your fleet, the decision comes down to what truly impacts daily productivity: consistent performance in non-ideal conditions, genuine versatility across different materials, and ease of use and maintenance. The CDS series brings all these factors together in one coherent design — chain transmission for durability, protected hydraulic components for reliability, rotor kits that adapt to a wide variety of tasks without changing attachments, and quick size adjustments to match the output to the intended use. For those who often work with wet materials or in urban job sites, these aren’t just extra features — they’re a guarantee of faster operations, smoother logistics, and fewer reworks.

If you’re looking for a screening bucket that combines high productivity, versatility, and reliability, the CDS is the natural choice.
Talk to a CM technician: based on your carrier machine (excavator, skid steer loader, backhoe loader, wheel loader, or telehandler), your material, and the desired output size, we can recommend the most suitable model and rotor kits — and provide a tailored quote!