CBS 600 Stainless Steel
CBS 600 showing sample cutter
Painted CBS 1600 with inspection hatch open for access
Painted CBS 1600 with enclosed sampling housing and external drive assembly
Painted CBS 1600 showing the enclosed sampling housing and support frame
Engineer inspecting a CBS installed on a conveyor belt
CBS 2000 with additional painted support structure and ladder
CBS installed on a conveyor belt
CBS 2000 Flexible drive coupling
3D render of CBS
3D render of CBS showing material flow
Cross Belt Sampler - Exploded View
Cross Belt Sampler - Dimensions View
The Cross Belt Sampler (CBS) is a primary sampler designed to collect defined, full cross-section increments directly from bulk material conveyed on a moving conveyor belt. It supports automated sampling, process monitoring and quality control without a belt stop.
During each sampling cycle, a rotating cutter sweeps through the material on the belt. Guided belt support and a flexible scraper help the cutter follow the belt profile and collect fine material from the belt surface.
Each CBS is engineered for the conveyor, material, required increment mass, installation conditions and downstream sample handling. It can operate as a stand-alone sampler or as the first stage of a complete multi-stage and sample preparation system. Correct dimensioning, installation, operation and verification of the complete system is essential to reliable results.
Standard sizes cover conveyor belt widths from less than 400 mm to more than 2,000 mm, with increment masses from 0.1 to 50+ kg depending on the application.
The CBS is installed directly on a conveyor belt, where it takes defined increments from the moving material stream without interrupting production. When a sample is requested, the rotating cutter accelerates to its set speed before entering the active sampling zone.
The cutter then sweeps through the cross-section of the material stream on the conveyor belt in a controlled circular motion and directs the collected increment to the outlet chute.
The CBS is designed around the interaction between cutter and belt. Guiding plates and inclined rollers support the belt throughout the cut and help the rotating sample cutter follow the belt profile. A flexible scraper helps collect fine material, while internal skirts help reduce spillage. Belt-edge protection blocks help reduce the risk of damage if the belt runs out of alignment.
After the sampling cycle, the collected increment is discharged through the outlet chute to a sample container or downstream sample-preparation equipment. The CBS can be configured for automatic or manual operation and integrated with the plant control system.
A primary sampler must control increment extraction, increment delimitation, material handling and repeatable operation. The CBS is engineered around these four requirements.
Every Cross Belt Sampler is engineered according to the specific characteristics of the application, including:
Process and material data
Conveyor and installation data
M&W JAWO Sampling reviews these inputs with the customer and confirms the final configuration, interfaces, dimensions and project documentation before production.
Send us your conveyor data, material characteristics, required increment mass and plant layout.
M&W JAWO Sampling will review the sampling duty and recommend the CBS configuration, interfaces and options that fit the application.
Review the sampling principle, typical configuration, technical data and available options for the M&W JAWO Sampling Cross Belt Sampler.
The CBS is a primary sampler that can operate as a standalone primary sampler or as the first stage of a complete automated sampling system. Installed directly on a conveyor belt, it takes an increment from the moving material stream and discharges the collected increment through the outlet chute to a sample container or downstream sample-preparation equipment.
Where sample-size reduction is required, the increment can be directed into a feeder, typically a Vibration Feeder or a Dosing Conveyor, which controls the feed rate into a sample divider such as a Virtual Adjustable Divider.
The divider is selected and configured to reduce sample mass while controlling the risk of segregation and material loss while preserving the composition of the collected increment. Reject material from the division can be returned to the main process conveyor belt.
The remaining sample can be collected in a Sample Magazine (SM) for automated collection and storage or transferred to further preparation. M&W JAWO Sampling can integrate sample transfer, division, crushing, drying, storage, online analysis and transport to the laboratory
The CBS uses a rotating, counterweighted sample cutter driven by a gear brake motor. A flexible coupling connects the motor and cutter head and helps reduce the transmission of shock loads and vibration through the drive train. This helps protect rotating components and supports long service life. During each sampling cycle, the cutter moves in a 360-degree rotation across the conveyor belt.
When an increment is requested, the cutter accelerates to its set speed before entering the active sampling zone. It then completes a controlled rotation through the full cross-section of the material stream on the conveyor belt in a controlled circular motion, collecting a defined increment directly from the process stream.
Guiding belt support helps the cutter to follow the belt profile while helping protect the belt. Belt-edge protection blocks help reduce the risk of damage if the belt runs out of alignment. A flexible scraper helps collect fine material, while internal skirts help reduce spillage.
After leaving the sampling zone, the cutter discharges the collected increment through the outlet chute to sample containers or downstream sample-preparation equipment. The fully enclosed sampling housing helps contain sampled material and cover moving parts. Inspection hatches provide easy access for cleaning and maintenance when the CBS is safely isolated.
Together, these design features support controlled increment collection, contained material handling and repeatable operation in demanding industrial environments.
The CBS is used where bulk material is conveyed on a belt and the sampling purpose requires defined, automated primary increments. Typical objectives include process monitoring, quality control, blending, shipment documentation and commercial settlement.
Final suitability depends on the material, material flow rate, particle top size, belt width, installation conditions and sampling duty.
Material density, particle top size, flow rate and abrasiveness influence the CBS configuration, cutter arrangement and required construction materials. For abrasive duties, the cutter head can be equipped with optional Hardox impact plates. For dusty duties, the enclosed housing can be fitted with an optional dust-extraction connection. M&W reviews these conditions as part of the project engineering process.
Each Cross Belt Sampler is customised specifically for the customer’s operation and material. Dimensions, weight and configuration are determined through direct consultation and a thorough review of the customer’s production layout, conveyor belt and installation conditions.
Because every facility is unique, each CBS is individually engineered to match the required specifications, space constraints and process demands.
The table and drawing below provide indicative dimensions and equipment. Final dimensions, interfaces, support loads and weights are confirmed during project engineering.
The CBS is installed directly on a conveyor belt carrying bulk material. The final configuration is based on belt width, speed, profile and inclination; material loading and particle top size; available space; supporting structure; and the required sampling duty.
When an increment is requested, the gear brake motor accelerates the rotating cutter to its set speed before it enters the active sampling zone. The cutter then sweeps through the full material cross-section in a controlled circular motion and directs the collected increment through the outlet chute. Guided belt support and a flexible scraper help control the cutter-to-belt interaction and collect fine material.
The actual increment mass depends on bulk density, belt loading, particle size, cutter geometry and the sampling duty. The CBS is configured for increment masses from 0.1 to 50+ kg. M&W JAWO Sampling confirms the required increment mass during application engineering.
Standard CBS sizes cover conveyor belt widths from less than 400 mm to more than 2,000 mm. Final dimensions and interfaces are confirmed during project engineering.
Guiding plates and inclined rollers support the conveyor belt through the sampling area and help the sample cutter follow the belt profile. Belt-edge protection blocks help reduce the risk of damage if the belt runs out of alignment.
Yes the CBS can be configured for abrasive duties. Materials of construction and wear protection are selected for the material and operating conditions, and the cutter head can be fitted with optional Hardox impact plates where required.
The enclosed sampling housing helps contain material around the sampling zone and covers moving parts. Where required, the housing can be fitted with a connection for an external dust-extraction system to help remove airborne dust during operation.
The CBS can be integrated with the plant control system and configured for the agreed sampling sequence. An optional local control cabinet can include motor control, frequency converter, PLC, HMI and communication interface. Available trigger methods and signals are defined for the project.
Routine maintenance includes inspection of the cutter head, drive motor, coupling, belt-guidance components, scraper, internal skirts,position switches, together with cleaning of the sample path. Inspection hatches provide access for cleaning and maintenance after the machine has been isolated in accordance with the plant’s approved procedures.
Yes. The CBS can be engineered for retrofit installations where the existing conveyor belt, available space and supporting structure, and downstream sample handling are assessed as part of the project. Final requirements are confirmed through an application and layout review.
The applicable sampling standard depends on the material, sampling purpose, jurisdiction and complete system. The CBS has a TOS-compliant design and is engineered in accordance with international sampling standards such as ISO, ASME, GOST and EN. The applicable standard and scope of compliance for a specific delivery are agreed as part of the project specification. Compliance should not be inferred from the primary sampler alone
Yes. M&W JAWO Sampling can assess the CBS under the customer’s material and local operating conditions. Available methods include replication experiments, variographic characterisation or material-specific performance or bias testing. The method, responsibilities, acceptance criteria and reporting are agreed for the project.
The CBS can operate as a stand-alone primary sampler, discharging to a sample container, or as the first stage of a complete automated sampling and sample-preparation system. Depending on the application, downstream equipment can include controlled feeding, sample division, crushing, drying, sample collection, sample transport, online analysis and control integration. Final system scope is project-specific.
M&W JAWO Sampling has engineered and manufactured automated representative sampling and sample-preparation equipment since 1982. With more than 3,000 units across 950+ projects in over 85 countries, we deliver complete solutions for the Mining, Metals and Minerals Processing, Cement, Energy and Power Generation, Fertilizers, Chemicals, and Food and Feed industries worldwide.
Our scope covers the sampling chain from primary increment collection through sample transfer, division, crushing, drying, storage and transport to the laboratory. Equipment is engineered and manufactured at our facilities in Denmark.
M&W JAWO Sampling — Sampling made Simple
