The construction world is using more smart technology every day. But machine owners don't always need full automation features. They just want tools that offer accuracy, work quickly, and are easy to set up. To meet this need, FJD designed the H39 PRO-G Dozer 3D Guidance System, a lightweight solution for jobs that don't require the machine to automate blade control.

The H39 PRO-G keeps the best smart features of expensive systems, like GNSS, IMU, and 3D visualization, but it removes the complex automation components. It can also be easily upgraded to automatic control in the future. For contractors just starting with smart technology or managing many different machines, the H39 PRO-G is a simple and safe way to get better results in projects.

High-Accuracy Positioning with Industry-Grade Reliability

The H39 PRO-G utilizes dual-antenna GNSS and a high-performance IMU to deliver about ±3cm position and attitude accuracy. The system renders a dynamic 3D working view that displays blade inclination, elevation deviation, cut/fill values, and design surface proximity—all in real time. Operators immediately know whether they are on grade, the amount of material to cut or fill, and the direction in which the blade should move.

This system runs on an 8-core 2.2 GHz industrial-grade computing platform. The screen operation is clear and fast, even when working in bad conditions like bright sun, dust, or heavy shaking. Every component undergoes rigorous impact, vibration, humidity, and temperature testing to ensure durable performance in climates down to -40°C. Over-the-air (OTA) updates and remote diagnostics further reduce maintenance downtime and support costs.

Efficiency Across 90% Daily Dozer Operations

Built for dozers, the H39 PRO-G boosts efficiency across 90% of typical earthmoving work. Here are some common scenarios:

Large Area Grading & Industrial Site Preparation
For factory pads, industrial parks, and large open sites, the H39 PRO-G provides a stable elevation reference and clear blade attitude feedback. Operators can hit the right cut/fill targets with fewer passes, making the ground flatter and reducing expensive re-dos.
 

Highway & Railway Infrastructure
During embankment shaping, subgrade leveling, or slope trimming, the system puts the design lines, slopes, and direction right on the screen. Operators can easily follow the plan and avoid mistakes that happen when judging by eye.
 

Mining & Quarry Operations
In mines, it's often hard to find a good reference point. Using its GPS and sensor, the H39 PRO-G keeps the height and direction accurate, even on rough ground. Whether moving topsoil, prepping loading spots, or building haul roads, operators can control blade depth accurately and maintain target slopes, saving fuel and preventing unnecessary digging.
 

Building Foundation & Municipal Works
For foundation excavation, pad leveling, and temporary access road repair, the system provides a reliable depth or elevation reference. Operators can quickly achieve correct grades without repeated checking or staking. When constructing drainage slopes or trenches, the slope mode helps maintain precise tilt angles.
 

Water Conservancy & Embankment Construction
In canal shaping, embankment trimming, and riverbank protection, the system displays cross-slope, design slope, and proximity to restricted areas. Operators can complete profiles that meet design slope ratios while reducing risk in areas with obstructed visibility. Elevation limit alerts add safety near water surfaces or drop-off zones.

Smart Features Built for Demanding Jobsites

The FJD H39 PRO-G offers smart features to handle the tough demands of any job site, giving operators practical efficiency and accuracy.

Elevation Offsets
Operators can use elevation offsets to quickly shift the target reference surface up or down. This helps them work quickly in stages, like creating layers or protective surfaces, without needing to load new design files all the time.

Blade Wear Calibration
When the blade wears down, the height readings can be wrong. This feature checks and corrects the blade's true height. This keeps operational accuracy perfect during long jobs without needing to manually adjust the machine.

Upgradeable Automation Architecture
The H39 PRO-G is built for future upgrades. By adding proportional valves, solenoid valves, and the hydraulic control module, the system can be upgraded to a full automatic control system. This protects the contractor's investment and lets them move to fully automated grading when they are ready.

Quick to Install on Many Machines
Operators don't need to change the machine's hydraulics, so setup and calibration can be done in just one day, which means less machine downtime. The system works with many setups —including dual-mast, mast-less, and 2D-only sensor setups—and fits a wide variety of dozer brands and models.

Versatile Work Modes
The H39 PRO-G can be used for jobs with a design file and jobs without one:

• Depth Guidance: Ideal for stripping, material removal, and mud cleanup
• Elevation Guidance: Ensure consistent pad grading and large-area leveling
• Slope Guidance: Maintain precise slope ratios for drainage, embankments, and shaping
• Plane Mode: Efficient for initial site preparation without design files
• 2D Guidance Without GNSS: Enable work in GNSS-challenged or obstructed areas

These modes can be used separately or in combination to cover more than 90% of typical dozer applications.

Lower Investment, Higher Efficiency

Because the H39 PRO-G is accurate to the centimeter, operators can hold the correct elevation, slope, and blade direction. This means less rework and more precise results. Field tests show that work speed usually improves by 20% to 30%, especially for newer operators.

Since no complex hydraulic control parts are needed, setup time is cut by over 50%, and repairs cost much less over time. It works with many different machines, helping contractors use their fleet 40%+ more often. By removing the control hardware, the total cost of the system drops by 30% to 50%, making smart construction available to more construction teams.

High-Precision Guidance Made Simpler

The FJD H39 PRO-G Dozer 3D Guidance System delivers a great mix of accuracy, flexibility, and low cost. Because it's easy to set up, highly accurate, works with many machines, and is built to be upgraded later, it's a practical and powerful way to start using smart construction technology. Whether contractors are trying smart systems for the first time or want to boost the performance of their mixed group of machines, the H39 PRO-G is a ready-for-the-future solution designed to bring immediate value to every job site.