KLINDEX Expander 850AT Autopilot Floor Grinder – Made in Italy. Advanced Remote-Controlled Floor Grinding and Polishing System
 
The KLINDEX Expander 850AT Autopilot Floor Grinder is a cutting-edge, fully automated floor grinding and polishing machine designed for professionals who demand precision, power, and productivity. Manufactured in Italy by industry leader KLINDEX, this model is equipped with Autopilot technology, enabling it to perform complex grinding and polishing tasks with minimal operator intervention. It is the perfect solution for large commercial and industrial flooring projects where efficiency and top-tier finishing quality are essential.

🔧 Key Features of the Expander 850AT

✅ Autopilot System – Fully Automated Operation
The Autopilot system revolutionizes floor preparation by allowing the machine to work automatically in straight lines, spirals, or random movement patterns. With pre-programmed settings and onboard sensors, the Expander 850AT delivers uniform grinding, increased productivity, and reduced labor costs.

✅ Massive 850mm Working Width
With an 850mm grinding path, the machine covers large areas faster, making it ideal for airports, malls, warehouses, factories, and other high-traffic surfaces. Save time without sacrificing precision or finish quality.

✅ Planetary Gear System
The Expander 850AT features a planetary gear-driven system that offers balanced rotation and superior torque, ensuring consistent results across all types of surfaces, including concrete, terrazzo, marble, and granite.

✅ Remote-Controlled Operation
Enjoy complete control from a distance. Adjust movement direction, rotation speed, and operational mode with ease using the intuitive remote-control system, minimizing manual handling and improving safety.

✅ Powerful Three-Phase Motor
Equipped with a 20 HP (15 kW) motor, this grinder provides robust performance to handle demanding applications like heavy coating removal, concrete leveling, and stone polishing.

📐 Technical Specifications
Specification
Details
Model
Expander 850AT
Working Width
850 mm
Motor Power
15 kW (20 HP)
Voltage
380–480 V / 3-phase
Grinding Heads
3 Planetary rotating heads
Rotational Speed
Adjustable up to 1300 rpm
Water Tank Capacity
Integrated for wet grinding
Machine Weight
Approx. 474 kg
Remote Control
Yes – Full-function wireless unit
Origin
Made in Italy
Applications
Concrete, terrazzo, marble, epoxy
📌 Note: Specifications may vary slightly based on local configuration or updates.

🏗️ Applications
Large-scale concrete grinding and polishing
Epoxy, glue, and paint removal
Stone floor honing and polishing
Surface leveling and restoration
Industrial flooring preparation
Decorative concrete polishing

🌍 Why Choose KLINDEX Expander 850AT?
🛠️ Efficiency Through Automation
The Autopilot feature enables hands-free operation, maximizing work output while allowing your team to multitask or oversee multiple machines simultaneously. This automation translates to faster project completion times and labor cost savings.

💪 Superior Grinding Power
With its high torque and planetary motion, the Expander 850AT can tackle even the hardest floors and coatings, leaving behind a smooth, professional surface ready for sealing or polishing.

🧼 Dust-Free Compatible
Pair the Expander 850AT with KLINDEX dust extraction systems for dust-free operation, keeping job sites safe, clean, and compliant with environmental and safety standards.

🎯 Precision on Every Pass
Its balanced weight distribution, combined with intelligent navigation, ensures uniform grinding depth and flawless finishes, even on uneven surfaces.

🔁 Versatile Performance
Suitable for a wide range of materials and grinding techniques, the Expander 850AT adapts to everything from aggressive coating removal to delicate stone polishing with ease.

🚀 Conclusion: Take Floor Grinding to the Next Level
The KLINDEX Expander 850AT Autopilot Floor Grinder is more than just a grinder—it’s a smart, automated flooring solution that combines Italian engineering, power, and innovation. Designed for large-scale surface preparation, it offers precision, productivity, and versatility, helping contractors deliver top-tier finishes faster than ever before.

Invest in the future of flooring with KLINDEX—where technology meets craftsmanship.
 
Techincal Specifications
 
Learn More: Selecting floor preparation equipment
Learn More: How to do floor polishing.
Learn More: Setting the correct rpm of a floor grinder.
 
What is a concrete grinder?
A concrete grinder can come in many configurations, the most common being a hand-held Angle grinder, but it may be a specialized tool for countertops or worktops. There are also purpose-built floor grinders that are used for grinding and polishing marble, granite and concrete. Machines that grind concrete floors are usually made to handle much more stress and will have more power to drive the unit as concrete has much higher sliding friction than marble or granite which is also worked wet, therefore with less friction. In fact some types of marble will spark when it is ground dry, causing deep damage to the marble surface.