Used Agricultural Ground Speed Radar

Used Combine Harvester: Ground Speed Radar, a Sensor at the Heart of the Harvest

On a combine harvester or agricultural thresher, the ground speed radar is a Doppler sensor mounted under the chassis that measures the actual ground speed of the machine, independently of the drive wheel slip. This measurement is critical: it controls the feed regulation based on the actual forward speed, directly reducing blockages and minimizing losses during challenging conditions — wet soil, slopes, dense crops.

The radar signal also feeds yield mapping systems when fitted, combined with grain flow sensors. Without reliable ground speed data, yield maps lose all agronomic accuracy. On modern combine harvesters with advanced electronic management, the ground speed radar is integrated into the machine's CAN Bus architecture: a faulty sensor can simultaneously disable multiple functions, from automatic feed speed adjustment to productivity alerts on the onboard terminal.

Signs of a breakdown are recognizable: ground speed showing zero or erratic values on the dashboard, unjustified feed alerts, discrepancies between GPS area tracking and machine counter, or unusable yield mapping. TMC Bejenne holds a large stock of ground speed radars recovered from agricultural machines of all types, tested before sale to ensure reliable operation.

Used Ground Speed Radar: Applications by Machine Type

• Combine Harvester: real-time feed regulation according to effective ground speed, blockage reduction under difficult conditions, data supply for yield mapping systems — a key component in modern harvest electronics
• Self-Propelled Forage Harvester: precise ground speed measurement for control of cut length and silage density, essential for harvest management systems on recent models
• Tractor with Seed Drill: calculation of actual seeding rate per area covered, crucial for variable-rate seeding and compliance with CAP declarations
• Tractor with Spreader or Sprayer: application rate control based on effective ground speed, preventing under- and over-application at row ends or on slopes
• Baler: bale counting and productivity management on machines equipped with connected onboard terminals
• Compatibility covered: low-frequency sensors (2.4 GHz) and high-frequency types, various connector types and mounting brackets depending on manufacturers, available depending on stock arrivals

Older Combine Harvesters: Finding Compatible Ground Speed Radars

For combine harvesters over ten years old, sourcing original electronic parts often becomes difficult and costly. Manufacturers progressively limit availability of older references, and dealers no longer routinely stock sensors for out-of-warranty machines. This is where TMC Bejenne steps in: regular dismantling of machines from all generations keeps ground speed radars available for models no longer supplied new through official networks.

Combine harvesters from 2000 to 2015 — intermediate generations before widespread CAN Bus adoption — are well represented in our stock, with analog and semi-electronic sensors still in high demand by farms that maintain their equipment rather than replace it. A used ground speed radar from a machine of the same generation offers direct compatibility without adaptation or reprogramming. Our specialized technicians identify the suitable reference based on brand, model, and year: call 05 86 24 00 26 to check availability.

Claas, John Deere, Case IH Combines: Check Compatibility Before Purchase

• Claas Lexion, Tucano, Avero: wide range of ground speed radars in stock, compatible with CEBIS and CEMIS terminals depending on generation — Claas is the most represented brand in our dismantling arrivals
• John Deere Series S, T, and W: sensors from PowerTech engines, referenced for GreenStar 2 and GreenStar 3 terminals, available depending on stock arrivals
• Case IH Axial-Flow: ground speed radars from 5130, 6130, 7130, and 8230 series, compatible with Case IH's AFS architecture
• New Holland CR and CX: sensors from twin-rotor and single-rotor combines, referenced for IntelliView terminals
• Massey Ferguson MF7200, MF9000: availability depending on stock, compatible with Datatronic and Fieldstar terminals
• Fendt IDEAL and C-series: regular arrivals from dismantled models, compatible with VarioDoc architectures
• For each reference, our technicians check brand, model, year, and onboard terminal compatibility before order confirmation

Combine Harvester Brands: Regular Dismantling at TMC Bejenne

TMC Bejenne regularly dismantles combine harvesters and tractors from all major brands in the French and European markets, generating a steady supply of tested electronic components. Dismantling complete agricultural machines allows us to recover ground speed radars in good working order from machines that are damaged, decommissioned, or simply replaced by newer models on farms. Each sensor is cleaned, electrically tested, and catalogued by brand, model, and year before being stocked.

Claas , John Deere , Case IH , and New Holland make up the bulk of our dismantling stock, alongside Massey Ferguson and Fendt . On 11 hectares of yard at Naintré (Vienne), TMC Bejenne stores and organizes thousands of used agricultural components, including a permanent stock of electronic sensors from both recent and older machines. Since 1945, TMC Bejenne has supported tractors and combines of all generations with verified used parts, available immediately and shipped throughout France.