Remote-controlled planetary floor grinder with variable speed and adjustable working pressure.


  • Remote Control Optional
  • Variable Speed of Tools
  • Strong Gear Box with Thermo-Hardened Steel Gears
  • Noiseless Operation
  • Auto Leveling Planetary System
  • Unmistakable Italian Design
  • Weight 1,067 lbs.



Expander 850RX

The Expander 850RX is a top-quality remote-controlled concrete grinding and polishing machine from Klindex, the industry leader. The Expander 850RX operates between 380 and 480 volts. The Expander 850RX is constructed with high-grade materials and has a strong gear box with thermo-hardened steel gears for a longer machine life.  The Expander 850RX has a 25 horsepower motor and weighs 1,067 lbs. With tool speeds between 300 and 1300 rpm, the Expander 850RX is a powerful machine capable of grinding your floor quickly and effectively while still producing minimal noise. The Expander 850RX has a 33 inch wide working path that is great for medium and large sized concrete surfaces. Unlike other machines that connect to a water hose, the Expander 850RX has a 12 gallon water tank for better mobility when wet grinding concrete surfaces.

The Expander 850RX includes a remote control that can adjust machine speed and direction, planetary speed, planetary turning, grinding head pressure, and drift control. To prevent workplace emergencies, The Expander 850RX also includes safety features like a stop button and a manual driving option. The Expander 850RX has adjustable inclination for the planetary system to allow bigger frontal cutting and can automatically adjust working pressure. In addition, The Expander 850RX has the option for an insert-able third wheel for easy transportation and battery power for independent wheel traction when the machine is unplugged. With Klindex, you’re getting a quality grinding machine that is built to last.